Tower crane lift, tower barrel and wind turbine generator set

Abstract

The present invention relates to the technical field of lifting equipment, and provides a tower barrel elevator, a tower barrel and a wind power generating set. The tower barrel elevator includes: an elevator body, which includes a support mechanism and is adapted to be connected to a climbing ladder through the support mechanism; an anti-collision device, which includes a first detection switch and a first elastic trigger assembly respectively connected to the elevator body; the first detection switch is connected to the control circuit of the elevator body, and the first elastic trigger assembly is located on the front side of the support mechanism at the foremost end of the elevator body in its moving direction; the first elastic trigger assembly is configured to act under the touch of an obstacle on the climbing ladder to trigger the first detection switch to act. This tower barrel elevator can prevent safety accidents such as collision or rolling of the elevator body on the hands on the climbing ladder through the anti-collision device, and improve the safety of elevator operation.

Description

Technical Field

[0001] The present invention relates to the technical field of lifting equipment, and in particular to a tower barrel elevator, a tower barrel, and a wind power generation set. Background Art

[0002] At present, the guiding forms of wind power tower barrel elevators usually include two forms: wire rope guiding and ladder guiding. For a ladder-guided elevator, during the operation of the elevator, it is possible that a staff member is climbing the ladder, while the operator in the elevator car cannot identify the position of the climbing person and cannot brake the elevator in time, which may lead to casualties.

[0003] In the related art, when the elevator ascends and descends along the ladder, the upper contour assembly at the top of the elevator and the lower contour assembly at the bottom can touch the climbing person, so as to trigger the limit switches on the upper contour assembly and the lower contour assembly to output signals to the control device to control the elevator to stop running. However, when the climbing person climbs the ladder opposite to the elevator, it will crush the hand of the climbing person, causing a safety accident. Summary of the Invention

[0004] The present invention provides a tower barrel elevator, a tower barrel, and a wind power generation set to solve the problem that the existing tower barrel elevator may crush the hand of a climbing person opposite to the elevator, causing a safety accident.

[0005] The present invention provides a tower barrel elevator, including:

[0006] An elevator body, including a support mechanism and adapted to be connected to a ladder through the support mechanism;

[0007] An anti-collision device, including a first detection switch and a first elastic trigger assembly respectively connected to the elevator body;

[0008] The first detection switch is connected to the control circuit of the elevator body, and the first elastic trigger assembly is located on the front side of the support mechanism at the foremost end of the elevator body in its moving direction; the first elastic trigger assembly is configured to act under the action of contact with an obstacle on the ladder to trigger the first detection switch to act.

[0009] The present invention also provides a tower barrel, including a barrel body and the above-mentioned tower barrel elevator. A ladder is arranged in the barrel body along its height direction, and the elevator body is guidingly connected to the ladder through the support mechanism.

[0010] The present invention also provides a wind power generation set, including a machine head and an impeller. The impeller is rotatably connected to the machine head, and also includes the above-mentioned tower barrel, and the machine head is rotatably connected to the tower barrel.

[0011] The tower barrel elevator, tower barrel and wind turbine generator set provided by the present invention are provided with a first detection switch and a first elastic trigger assembly, and the trigger end of the first elastic trigger assembly is arranged on the front side of the support mechanism at the forefront in the movement direction of the elevator body. When the elevator body descends or ascends, if there is an obstacle in its moving path, the first elastic trigger assembly will collide with the obstacle first and trigger the first detection switch to act, cutting off the control circuit of the elevator body, so that the elevator body stops running, preventing safety accidents such as the elevator body colliding with or crushing the hands on the ladder, and improving the safety of the elevator operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0013] Reference numerals:

[0014] Figure 1 is one of the schematic structural diagrams of the tower barrel elevator provided by the present invention;

[0015] Figure 2 is another schematic structural diagram of the tower barrel elevator provided by the present invention;

[0016] Figure 3 is the schematic connection diagram of the driving device and the brake release device in the tower barrel elevator provided by the present invention;

[0017] Figure 4 is the schematic diagram of the swing arm assembly and the force application assembly in the tower barrel elevator provided by the present invention being in a separated state;

[0018] Figure 5 is the schematic connection diagram of the brake release device and the lower contour assembly in the tower barrel elevator provided by the present invention;

[0019] Figure 6 is the schematic structural diagram of the upper contour assembly in the tower barrel elevator provided by the present invention;

[0020] Figure 7 is one of the schematic structural diagrams of the anti-collision device in the tower barrel elevator provided by the present invention;

[0021] Figure 8 is the schematic connection diagram of the anti-collision device and the support mechanism in the tower barrel elevator provided by the present invention;

[0022] Figure 9 isFigure 1 Enlarged view of part A shown in the circle;

[0023] Figure 10 It is the second structural schematic diagram of the anti-collision device in the tower barrel elevator provided by the present invention;

[0024] Figure 11 It is the structural schematic diagram of the guardrail assembly in the tower barrel elevator provided by the present invention;

[0025] Figure 12 It is the schematic diagram of the connection relationship between the guardrail and the third trigger member in the tower barrel elevator provided by the present invention;

[0026] Figure 13 is Figure 1 Enlarged view of part B shown in the circle;

[0027] Reference numerals:

[0028] 10, climbing ladder; 1, elevator body; 11, top plate assembly; 12, bottom plate assembly; 13, enclosure plate assembly; 14, support mechanism; 141, support arm; 1411, support part; 1412, fixing part; 142, guide wheel;

[0029] 2, drive device; 21, motor; 211, brake; 2111, manual release push rod; 22, frequency converter; 23, overload detection device;

[0030] 3, brake release device; 31, first mounting member; 311, partition; 312, first accommodation space; 313, second accommodation space; 32, swing arm assembly; 321, swing arm; 322, second reset member; 323, pulling member; 324, guide member; 3211, rolling member; 33, force application assembly; 331, force application member; 3311, limiting portion; 332, first reset member; 34, brake release trigger assembly; 341, micro switch; 342, fourth trigger member; 3421, first connection portion; 3422, first trigger portion; 3423, transition portion;

[0031] 41, lower contour assembly; 411, lower contour plate; 412, connecting cloth; 413, lower escape skylight; 414, lower limit switch; 415, lower escape skylight switch; 416, connecting member; 42, upper contour assembly; 421, upper contour plate; 422, upper contour limit spring; 423, upper escape skylight; 424, upper limit switch; 425, upper escape skylight switch;

[0032] 5. Anti-collision device; 51. Second mounting member; 511. Mounting body; 512. First mounting portion; 513. Second mounting portion; 52. First detection switch; 53. First elastic trigger assembly; 531. Trigger member; 5311. Swing member; 5312. First trigger piece; 53121. Second trigger portion; 53122. Second connecting portion; 5313. Second trigger piece; 532. Elastic member; 54. Second elastic trigger assembly; 55. Cable.

[0033] 6. Pull cord switch assembly; 61. Pull cord; 62. Pull cord switch.

[0034] 7. Guardrail assembly; 71. Guardrail; 72. Door body; 73. Guardrail lock; 74. Enclosed space.

[0035] 8. Platform trigger assembly; 81. Third trigger piece; 811. First transition surface; 812. Trigger surface; 813. Second transition surface; 82. Second detection switch.

[0036] 9. Braking assembly; 91. First safety lock; 92. Second safety lock; 93. Braking rope. Detailed implementation manners

[0037] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below with reference to the accompanying drawings in the present invention. Apparently, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present invention without creative efforts shall fall within the protection scope of the present invention.

[0038] In the description of the embodiments of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "first" and "second" are used for numbering product components for clear description and do not represent any substantial difference. The directions of "up", "down", "left" and "right" are subject to the directions shown in the drawings. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances. In addition, the meaning of "a plurality" is two or more. In the description of the specification and the claims, "and / or" means at least one of the connected objects, and the character " / " generally means an "or" relationship between the associated objects before and after.

[0039] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] The following will describe the tower crane elevator, tower crane, and wind turbine generator of the present invention in conjunction with Figures 1 - 13 It should be understood that the following description is only a schematic embodiment of the present invention and does not constitute any limitation to the present invention.

[0041] As Figure 1 , Figures 7 - 10 shown, the tower crane elevator provided by the present invention includes an elevator body 1 and an anti-collision device 5. The elevator body 1 includes a support mechanism 14 and is adapted to be connected to a ladder 10 through the support mechanism 14. The anti-collision device 5 includes a first detection switch 52 and a first elastic trigger assembly 53 respectively connected to the elevator body 1. The first detection switch 52 is connected to the control circuit of the elevator body 1. The first elastic trigger assembly 53 is located on the front side of the support mechanism 14 at the front end of the elevator body 1 in its moving direction. The first elastic trigger assembly 53 is configured to act under the action of touching an obstacle on the ladder 10 to trigger the first detection switch 52 to act.

[0042] It can be understood that generally, a plurality of support mechanisms 14 are arranged on the elevator body 1 along its moving direction. When the elevator body 1 moves downward, the support mechanism 14 at the front end of the elevator body 1 is the first support mechanism closest to the bottom end of the elevator body 1. When the elevator body 1 moves upward, the support mechanism 14 at the front end of the elevator body 1 is the second support mechanism closest to the top end of the elevator body 1. A first elastic trigger assembly 53 is arranged at the position between the first support mechanism and the bottom end of the elevator body 1, and / or a first elastic trigger assembly 53 is arranged at the position between the second support mechanism and the top end of the elevator body 1.

[0043] Both the first elastic trigger assembly 53 and the first detection switch 52 can be arranged on the car of the elevator body 1, or both can be arranged on the corresponding support mechanism 14, or one can be arranged on the car and the other can be arranged on the support mechanism 14.

[0044] When there is an obstacle on the ladder 10 on the forward path of the support mechanism 14, the first elastic trigger assembly 53 first collides with the obstacle, causing a change in the stroke position of the first elastic trigger assembly 53, thereby triggering the first detection switch 52 to perform a switching action to cut off the control circuit of the elevator body 1 and stop the operation of the elevator body 1.

[0045] The tower crane elevator provided by the embodiment of the present invention, by setting the first detection switch 52 and the first elastic trigger assembly 53, and setting the trigger end of the first elastic trigger assembly 53 on the front side of the support mechanism 14 at the forefront in the movement direction of the elevator body 1, when the elevator body 1 is descending or ascending, if there is an obstacle on its moving path, the first elastic trigger assembly 53 first collides with the obstacle and triggers the first detection switch 52 to act, cutting off the control circuit of the elevator body 1, so that the elevator body 1 stops running, preventing safety accidents such as the elevator body 1 colliding with or crushing the hands on the ladder 10, and improving the safety of the elevator operation. The drive system of the elevator body 1 is closed-loop controlled through the anti-collision device 5, making the elevator operation more accurate and safer. And to prevent the elevator body 1 from still being in an operating state after the anti-collision device 5 cooperates with the locking, which may damage the guide rail or the motor.

[0046] Among them, the first elastic trigger assembly 53 abuts against the first detection switch 52. It can be understood that the first elastic trigger assembly 53 contacts the first detection switch 52, but no extrusion effect will be generated; or there is a small gap between the first elastic trigger assembly 53 and the first detection switch 52. When the position of the first elastic trigger assembly 53 changes slightly, the first detection switch 52 can be triggered to perform a switching action, and the elevator body 1 stops running immediately.

[0047] The first detection switch 52 can be a contact position sensor. Through the change in the stroke position of the first elastic trigger assembly 53, the contact of the first detection switch 52 is triggered to act, changing from the closed state to the open state, and then cutting off the control circuit of the elevator body 1 to realize the control of the elevator body 1 to stop running.

[0048] Among them, the first elastic trigger assembly 53 also abuts against the ladder 10. It can be understood that the first elastic trigger assembly 53 contacts the ladder 10, but no extrusion effect will be generated; or there is a small gap between the first elastic trigger assembly 53 and the ladder 10. When the first elastic trigger assembly 53 is touched by an obstacle, the position stroke position changes, thereby triggering the first detection switch 52 to perform a switching action, and the elevator body 1 stops running immediately.

[0049] Such as Figure 1 、 Figures 8 - 10As shown, the support mechanism 14 includes a support arm 141 and a guide wheel 142. The support arm 141 includes a support portion 1411 and a fixing portion 1412. The fixing portion 1412 is connected to the car. The guide wheel 142 is mounted on the support portion 1411. The ladder 10 is located between two sets of relatively arranged guide wheels 142. The guide wheel 142 can rotate flexibly and move up and down relative to the ladder 10 to provide guidance for the operation of the elevator body 1.

[0050] As Figure 7 and Figure 8 shown, in some embodiments of the present invention, the anti-collision device 5 further includes a second mounting member 51. The second mounting member 51 is mounted on the elevator body 1, and the first detection switch 52 is mounted on the second mounting member 51. The first elastic trigger assembly 53 includes a trigger member 531 and an elastic member 532. The trigger member 531 is rotatably connected to the second mounting member 51 and abuts against the contact of the first detection switch 52. The elastic member 532 is connected between the trigger member 531 and the second mounting member 51 for resetting the trigger member 531. The elastic member 532 can enable the trigger member 531 to immediately return to its original position after being impacted, so as to facilitate the next anti-collision protection.

[0051] Wherein, the second mounting member 51 includes a mounting body 511 and a first mounting portion 512 connected to the mounting body 511. The second mounting member 51 is connected to the elevator body 1 through the first mounting portion 512. The first mounting portion 512 can be mounted on the elevator body 1 through fasteners such as bolts and pins. The first detection switch 52 is fixed to the mounting body 511 and abuts against the first elastic trigger assembly 53.

[0052] It should be noted that the first mounting portion 512 can be connected to any component on the elevator body 1 that moves relative to the ladder 10, such as the car, or as Figure 8 shown, the first mounting portion 512 is connected to the support mechanism 14.

[0053] It can be understood that the second mounting member 51 is the mounting carrier of the first detection switch 52 and the first elastic trigger assembly 53, and it can be a plate-shaped member or a housing. When the second mounting member 51 is a plate-shaped member, the first mounting portion 512 can be formed by bending the end face of the mounting body 511, which is equivalent to the first mounting portion 512 being integrally formed with the mounting body 511. Of course, the first mounting portion 512 can also be provided independently of the mounting body 511, and the two are fixedly connected through fasteners such as bolts and pins.

[0054] It can be understood that the triggering component 531 provided in this embodiment can be an integral body, which has a triggering body, a first triggering part and a second triggering part connected to the triggering body. The first triggering part is used to trigger the contact of the first detection switch 52, and the second triggering part is used to touch an obstacle. The triggering body of the triggering component 531 can be rotatably connected to the second mounting member 51. After the second triggering part of the triggering component 531 touches an obstacle, the triggering body rotates around its connection point with the second mounting member 51, so that the first triggering part touches the contact of the first detection switch 52 to actuate.

[0055] As Figure 7 and Figure 8 shown, in some embodiments of the present invention, the triggering component 531 can be separately provided. The triggering component 531 includes a swinging member 5311, a first triggering member 5312 and a second triggering member 5313. The swinging member 5311 is rotatably connected to the second mounting member 51 and is connected to the elastic component 532. The first triggering member 5312 is connected to the swinging member 5311 and abuts against the contact of the first detection switch 52. The second triggering member 5313 is connected to the first triggering member 5312 and is configured to be able to touch an obstacle on the ladder 10 during the movement of the elevator body 1.

[0056] It can be understood that the swinging member 5311 is equivalent to the triggering body in the above example, the first triggering member 5312 is equivalent to the first triggering part in the above embodiment, and the second triggering member 5313 is equivalent to the second triggering part in the above embodiment. After the second triggering member 5313 collides with an obstacle, the swinging member 5311 rotates around its connection point with the second mounting member 51, so that the first triggering member 5312 touches the contact of the first detection switch 52 to actuate.

[0057] In some embodiments of the present invention, the first triggering member 5312 includes a second triggering part 53121 and a second connecting part 53122. The second triggering part 53121 is adapted to abut against the contact of the first detection switch 52, and the second connecting part 53122 is respectively connected to the second triggering member 5313 and the swinging member 5311. In addition, a spacer sleeve is provided between the swinging member 5311 and the second mounting member 51, so that there is a gap between the swinging member 5311 and the second mounting member 51, which is convenient for the swinging member 5311 to rotate around its connection position with the second mounting member 51.

[0058] For example, when the elevator body 1 moves downward along the ladder, when the second trigger 5313 collides with an obstacle, the swinging member 5311 swings upward, the first trigger 5312 moves upward accordingly, the first detection switch 52 is triggered to act, and the elevator body 1 quickly stops running. After the obstacle is removed, under the reset action of the elastic member 532, the swinging member 5311 is reset first, and under the dual action of the elastic member 532 and gravity, the swinging member 5311, the second trigger 5313 and the first trigger 5312 are reset.

[0059] When assembling the anti-collision device 5, first fix the first detection switch 52 on the second mounting member 51, then install the swinging member 5311 on the second mounting member 51 through bolts, and install a spacer sleeve between the swinging member 5311 and the second mounting member 51 so that the swinging member 5311 can swing around the connection point. Then connect the first trigger 5312 to the swinging member 5311, connect the second trigger 5313 to the first trigger 5312 to form the anti-collision device 5, and finally install the second mounting member 51 on the car and / or the support arm 141 through bolts.

[0060] It can be understood that the first trigger 5312 can be integrally formed. For the convenience of processing each component of the first trigger 5312, the first trigger 5312 can be separately provided as multiple parts, such as the second trigger part 53121 and the second connecting part 53122, and the structural forms of the second trigger part 53121 and the second connecting part 53122 can be adaptively adjusted according to the use requirements.

[0061] Among them, the second trigger 5313 includes at least one of a roller, a drum, and a slider.

[0062] When the second trigger 5313 is a roller, the second trigger 5313 can include a roller and a roller shaft. The roller is rotatably connected to the roller shaft, and the roller shaft is fixedly connected to the second connecting part 53122.

[0063] When the second trigger 5313 is a slider, a connection hole can be opened at the end of the slider, and the second connecting part 53122 is connected to the connection hole through a fastener such as a pin or a bolt.

[0064] In addition, in order to improve the climbing ability of the second trigger 5313, the second trigger 5313 can be cross-set as a roller and a slider. A chute adapted to the structure of the ladder 10 can be opened on the slider, and the handrails on both sides of the ladder 10 can be slidably matched with the chute.

[0065] Optionally, the second mounting member 51 further includes a second mounting portion 513 connected to the mounting body 511. The second mounting portion 513 can be formed by bending the side surface of the mounting body 511. The elastic member 532 can be connected to the mounting body 511 through the second mounting portion 513, so that there is a gap between the elastic member 532 and the mounting body 511, facilitating the deformation and reset of the elastic member 532. In addition, in order to prevent the deformation and reset of the elastic member 532 from shifting, a guiding member can be provided on at least one of the second mounting portion 513 and the swinging member 5311, so that the elastic member 532 is sleeved on the guiding member.

[0066] Wherein, the elastic member 532 can be any one of a compression spring and a torsion spring.

[0067] When the elastic member 532 is a compression spring, the first end of the compression spring is hung on the second mounting portion 513, and the second end of the compression spring is connected to the swinging member 5311. The swinging member 5311 rotates around the connection point under the extrusion of the second trigger member 5313, so that the compression spring bears an axial pressure and undergoes elastic deformation and is compressed, storing deformation energy. When the external load applied to the compression spring disappears, the compression spring resets to drive the swinging member 5311 to reset.

[0068] When the elastic member 532 is a torsion spring, the first torsion arm of the torsion spring is hung on the second mounting portion 513, and the second torsion arm of the torsion spring is connected to the swinging member 5311. When the swinging member 5311 rotates around the connection point under the extrusion of the second trigger member 5313, the torsion spring bears a radial load and undergoes elastic deformation and is extruded, storing deformation energy. When the external load applied to the torsion spring disappears, the torsion spring resets to drive the swinging member 5311 to reset.

[0069] Optionally, the second mounting member 51 is connected to the support mechanism 14 through the first mounting portion 512 and connected to the car through the second mounting portion 513, which can improve the connection reliability between the anti-collision device 5 and the elevator body 1.

[0070] It should be noted that the swinging member 5311 and the second mounting member 51 are rotationally connected through a connecting member. The connecting member can include a bolt and a nut. Threads are formed on a part of the screw rod of the bolt, and the threads are adapted to be connected to the nut. A contact surface is formed on another part of the screw rod of the bolt, and the contact surface contacts the swinging member 5311, so that the swinging member 5311 rotates on the surface of the contact surface. The connecting member can also include a sleeve, and the sleeve is sleeved on the bolt, and the swinging member 5311 has a clearance fit with the sleeve.

[0071] In some embodiments of the present invention, the first elastic trigger component 53 includes any one of an anti-collision strip and a rubber spring, and the first detection switch 52 is disposed inside the first elastic trigger component 53. When the elevator body 1 is ascending or descending, if there is an obstacle in its moving path, the anti-collision strip or the rubber spring will first collide with the obstacle and deform, so that the first detection switch 52 inside it will act to cut off the control circuit of the elevator body 1, thereby preventing the elevator body 1 from continuing to operate and improving the safety of the elevator operation.

[0072] In some embodiments of the present invention, the first detection switch 52 and the first elastic trigger component 53 are provided at the positions between the first support mechanism and the top end of the elevator body 1, and between the second support mechanism and the bottom end of the elevator body 1, so as to ensure that the elevator body 1 can avoid colliding with obstacles on the ladder 10 when ascending and descending.

[0073] Since the cost of the first detection switch 52 is relatively high, in order to save costs, in some embodiments of the present invention, as Figure 10 shown, the anti-collision device 5 further includes a second elastic trigger component 54, and the second elastic trigger component 54 is connected to the elevator body 1 and is located at the rear side of the support mechanism 14 at the rearmost end of the elevator body 1 in its moving direction. The second elastic trigger component 54 is configured to act under the action of being touched by an obstacle on the ladder 10 to drive the first elastic trigger component 53 to act.

[0074] It can be understood that one of the first elastic trigger component 53 and the second elastic trigger component 54 is located between the first support mechanism and the bottom end of the elevator body 1, and the other is located between the second support mechanism and the top end of the elevator body 1.

[0075] Among them, the second elastic trigger component 54 is connected to the elevator body 1 through another second mounting member 51. The second elastic trigger component 54 only needs to be provided with a second trigger part or a second trigger member 5313 for touching the obstacle. The first detection switch 52 is correspondingly arranged with the first elastic trigger component 53, and the second elastic trigger component 54 is linked to the first elastic trigger component 53.

[0076] Specifically, the second trigger member 5313 of the second elastic trigger component 54 is connected to the second trigger member 5313 of the first elastic trigger component 53 through a cable 55. The first end of the cable 55 can be connected to the tail of the swing member 5311 of the second elastic trigger component 54, and the second end of the cable 55 can be connected to the head of the swing member 5311 of the first elastic trigger component 53.

[0077] When the lift body 1 descends, it collides with the climbing personnel through the first elastic trigger component 53 to trigger the first detection switch 52. When the lift body 1 ascends, when the climbing personnel on the ladder collide with the second elastic trigger component 54, the swing piece 5311 of the second elastic trigger component 54 swings downward, and the tail of the swing piece 5311 moves upward. At this time, the brake wire is tightened, pulling the swing piece 5311 of the first elastic trigger component 53 to swing, so as to trigger the first detection switch 52 to act, thereby causing the lift body 1 to quickly stop running.

[0078] In the related art, during the descent of the lift, the lower contour component at the bottom of the lift can touch the climbing personnel to trigger the limit switch on the lower contour component to output a signal to the control device to control the lift to stop descending. However, when the lift loses power, the operator in the car descends the lift by manually releasing the brake. Even if the lower contour component touches the climbing personnel, it is impossible to prevent the lift from descending, and safety accidents will still occur.

[0079] In response to this, as Figure 1 , Figures 3 - 5 shown, the tower crane lift provided by the present invention further includes a brake release device 3 and a lower contour component 41. Among them, the drive device 2 includes a motor 21. The motor 21 is used to drive the lift body 1 to ascend and descend. The brake release device 3 is arranged on the lift body 1. The lower contour component 41 is connected below the lift body 1 and can move upward under the action of an obstacle collision. The lower contour component 41 is linked with the brake release device 3. When the lower contour component 41 is in the lower limit position, the brake release device 3 is linked with the brake 211 of the motor 21. When the lower contour component 41 is in the position between the lower limit position and the lift body 1, the brake release device 3 releases the linkage connection with the brake 211.

[0080] Among them, the brake 211 of the motor 21 is an electromagnetically attracted when energized and frictionally braked when de-energized type brake 211, which is provided with a manual release push rod 2111. It automatically brakes when the motor 21 loses power, and drives the manual release push rod 2111 of the brake 211 through the brake release device 3 to achieve manual brake release, so that the lift body 1 descends.

[0081] It can be understood that the lower contour assembly 41 is connected to the lower part of the elevator body 1 through a flexible member. Under the action of its own gravity, it is in the lower limit position relative to the elevator body 1. At this time, a linkage relationship is established between the brake release device 3 and the brake 211 of the motor 21, and the motor 21 can be manually released by the brake release device 3. During the manual descent of the elevator body 1, when the lower contour assembly 41 is collided by an obstacle located below it, the lower contour assembly 41 moves upward to the position between the lower limit position and the elevator body 1. At this time, the linkage relationship between the brake release device 3 and the motor 21 is released, and the brake release device 3 cannot manually release the motor 21, and the elevator body 1 stops running.

[0082] The tower crane elevator provided by the embodiment of the present invention is provided with a brake release device 3 linked to the lower contour assembly 41. The brake release device 3 can be linked to the brake 211 of the motor 21 when the lower contour assembly 41 is in the lower limit position, enabling the operator inside the elevator body 1 to manually release the brake through the brake release device 3. The brake release device 3 can release the linkage connection with the brake 211 of the motor 21 when the lower contour assembly 41 moves upward due to being collided, rendering the manual brake release operation of the operator on the brake release device 3 ineffective. The embodiment of the present invention restricts the manual brake release operation through the linkage control of the lower contour assembly 41 on the brake release device 3, avoiding the impact between the elevator body 1 and the climbing personnel below during the manual descent process, and enhancing the safety of the tower crane elevator.

[0083] See Figure 1 , in some embodiments of the present invention, the elevator body 1 includes a top plate assembly 11, a bottom plate assembly 12, and a side plate assembly 13. The side plate assembly 13 is connected between the top plate assembly 11 and the bottom plate assembly 12 to enclose and form a car for staff to ride in.

[0084] See Figure 1 and Figure 5 , the lower contour assembly 41 includes a lower contour plate 411, a connecting cloth 412, a lower escape skylight 413, and a lower limit switch 414. The periphery of the lower contour plate 411 is connected to the bottom of the elevator body 1 through the connecting cloth 412. The lower escape skylight 413 is hinged to the lower contour plate 411 for opening or closing the escape exit on the lower contour plate 411. The lower limit switch 414 is provided on the lower contour plate 411 for detecting the lower limit position of the downward stroke of the elevator body 1. The lower contour assembly 41 further includes a lower escape skylight switch 415 provided on the lower contour plate 411 for detecting the opening and closing state of the lower escape skylight 413. When the lower escape skylight 413 is in the open state, the motor 21 cannot operate.

[0085] See Figure 1 and Figure 6, the tower crane lift provided by the present invention further includes an upper contour assembly 42, and the upper contour assembly 42 includes an upper contour plate 421, an upper contour limit spring 422, an upper escape skylight 423 and an upper limit switch 424. Four corners of the upper contour plate 421 are respectively connected to four corresponding connectors on the top of the lift body 1 through the upper contour limit springs 422. The upper escape skylight 423 is hinged to the upper contour plate 421 for opening or closing the escape exit on the upper contour plate 421. The upper limit switch 424 is arranged on the upper contour plate 421 for detecting the lower limit position of the downward stroke of the lift body 1. The upper contour assembly 42 further includes an upper escape skylight switch 425 arranged on the upper contour plate 421 for detecting the opening and closing state of the upper escape skylight 423. When the upper escape skylight 423 is in the open state, the motor 21 cannot operate.

[0086] See Figure 4 and Figure 5 , in some embodiments of the present invention, the brake release device 3 includes a first mounting member 31, a swing arm assembly 32 and a force applying assembly 33. The first mounting member 31 is connected to the lift body 1, and the swing arm assembly 32 and the force applying assembly 33 are respectively arranged on the first mounting member 31. The swing arm assembly 32 is connected to the brake 211, and the force applying assembly 33 is movably arranged. When the lower contour assembly 41 is in the lower limit position, the swing arm assembly 32 abuts against the force applying assembly 33, so that the force applying assembly 33 can drive the brake 211 to release the brake through the swing arm assembly 32. When the lower contour assembly 41 is in the position between the lower limit position and the lift body 1, the swing arm assembly 32 is separated from the force applying assembly 33.

[0087] When the lower contour assembly 41 is in the lower limit position, as Figure 5 shown, the swing arm assembly 32 can abut against the force applying assembly 33, so that when the force applying assembly 33 moves upward, it can push the swing arm assembly 32 to move synchronously, and the brake 211 is released.

[0088] When the lower contour assembly 41 is in the position between the lower limit position and the lift body 1, as Figure 4 shown, the swing arm assembly 32 is disengaged from the force applying assembly 33, and the force applying assembly 33 cannot apply an upward thrust to the swing arm assembly 32.

[0089] In some embodiments of the present invention, the first mounting member 31 is provided with a partition 311. The force applying assembly 33 includes a force applying member 331 and a first reset member 332. The force applying member 331 movably passes through the partition 311, one end of the force applying member 331 is limited to one side of the partition 311, and the first reset member 332 is located on the other side of the partition 311 and is connected between the first mounting member 31 and the force applying member 331 for resetting the force applying member 331.

[0090] Among them, the force - applying member 331 can be a rod - shaped member or a plate - shaped member. The force - applying member 331 passes through a through - hole on the partition plate. A limiting portion 3311 is provided at the first end of the force - applying member 331. The limiting portion 3311 is limited to one side of the partition plate 311 to ensure that the force - applying member 331 moves along the axial direction of the through - hole and cannot be detached from the first mounting member 31, making the structure more stable and the operation more reliable. The first end of the force - applying member 331 abuts against the swing - arm assembly 32 through the limiting portion 3311. The second end of the force - applying member 331 passes through the first mounting member 31 for an operator to apply an upward thrust to the force - applying member 331.

[0091] The first reset member 332 is a spring or a spring sheet. The first reset member 332 in the form of a spring can be sleeved on the force - applying member 331. When the force - applying member 331 is pushed upward, the force - applying member 331 moves upward against the restoring force of the first reset member 332 to push the swing - arm assembly 32 upward, thereby driving the brake 211 to release the brake. When the thrust on the force - applying member 331 is withdrawn, the force - applying member 331 moves downward and resets under the action of the first reset member 332 and abuts against the partition plate 311, and the brake 211 resumes braking.

[0092] As Figure 4 and Figure 5 As shown, the swing - arm assembly 32 and the force - applying assembly 33 form a control valve group of the brake 211. The first mounting member 31 serves as the mounting housing of this control valve group and is used to mount the control valve group of the brake 211 on the elevator body 1. Installation lugs extend outward respectively from both sides of the top of the first mounting member 31 and are mounted on external components through these installation lugs.

[0093] A receiving space is provided inside the first mounting member 31, and the partition plate 311 is arranged in this receiving space to divide the interior of the first mounting member 31 into a first receiving space 312 and a second receiving space 313. A part of the swing - arm assembly 32 is located in the first receiving space 312, and a part of the force - applying assembly 33 is located in the second receiving space 313. By respectively arranging the swing - arm assembly 32 and the force - applying assembly 33 in different receiving spaces, it is convenient for the installation and maintenance of the swing - arm assembly 32 and the force - applying assembly 33. At the same time, the structural arrangement can be simplified, and the need for the force - applying assembly 33 to be provided with an independent limiting structure is saved.

[0094] Optionally, the first mounting member 31 includes a mounting body and a movable cover plate. The mounting body and the movable cover plate enclose to form a receiving space. The movable cover plate is slidably arranged on the mounting body to facilitate the maintenance of the swing - arm assembly 32 and the force - applying assembly 33 located in the receiving space.

[0095] See Figure 4 and Figure 5, in some embodiments of the present invention, the swing arm assembly 32 includes a swing arm 321, a second reset member 322, and a pulling member 323. The first end of the swing arm 321 is connected to the manual release push rod 2111 of the brake 211. The second reset member 322 is disposed between the swing arm 321 and the first mounting member 31 for resetting the swing arm 321. The first end of the pulling member 323 is connected to the swing arm 321, and the second end of the pulling member 323 is connected to the lower contour assembly 41.

[0096] Wherein, the pulling member 323 is a flexible cable capable of withstanding tension, and can be a steel wire rope, a hemp rope, a chain, etc. The lower contour plate 411 is provided with a connecting member 416, and the second end of the pulling member 323 is connected to the connecting member 416. The second reset member 322 is the same as the above-mentioned first reset member 332, and is both a spring or a spring sheet.

[0097] The weight of the lower contour assembly 41 can be transmitted to the swing arm 321 through the pulling member 323, so that the swing arm 321 can overcome the elastic action of the second reset member 322 and be in a balanced state under the action of the pulling member 323 and the second reset member 322, that is, the second end of the swing arm 321 abuts against the force applying member 331. At this time, the manual release push rod 2111 can be released through the brake release device 3. It can be understood that the pulling member 323 and the second reset member 322 act together to keep the swing arm 321 in a balanced state. If either of them changes, the balanced state of the swing arm 321 will be broken.

[0098] As Figure 4 shown, when there is no obstacle below the lower contour assembly 41, it is in the lower limit position. The weight of the lower contour assembly 41 is transmitted to the swing arm 321 through the pulling member 323, applying a self-weight pulling force to the right on the swing arm 321. At the same time, the second reset member 322 applies a horizontal force to the left on the swing arm 321 to balance the pulling force of the pulling member 323 to the right, so that the swing arm 321 is in the first position, that is, the second end of the swing arm 321 abuts against the force applying member 331, and the swing arm 321 and the force applying member 331 can be approximately on the same axis. At this time, pushing the force applying member 331 upward can cause the first reset member 332 to deform. Continuing to push the force applying member 331 upward can cause the swing arm 321 to move upward, pushing open the manual release push rod 2111 and driving the brake 211 to release the brake, so that the elevator body 1 moves downward under its own weight. Once the upward thrust of the force applying member 331 is released, the force applying member 331 will reset under the action of the first reset member 332, and the swing arm 321 will move downward due to its own weight, and the motor 21 will resume the brake state.

[0099] As Figure 4As shown in the figure, when there is an obstacle below the lower contour component 41, if the elevator body 1 continues to move downward, it will touch the obstacle, and the lower contour component 41 will be lifted by the obstacle. The pulling force exerted by the lower contour component 41 on the swing arm 321 through the pulling member 323 decreases or disappears, breaking the balance state of the swing arm 321. As a result, the swing arm 321 is pushed by the second reset member 322 to rotate around the connection point with the manual release push rod 2111 to the second position, and the second end of the swing arm 321 is separated from the force applying member 331. Even if the force applying assembly 33 is pushed upward, the force applying assembly 33 cannot continue to apply an upward thrust to the swing arm 321. The manual release push rod 2111 is automatically locked, and the elevator body 1 quickly stops running, avoiding a collision between the elevator body 1 and the obstacle and causing an accident, so as to improve the safety of the elevator operation.

[0100] Optionally, the first end of the swing arm 321 is set in a "U" shape. That is to say, the first end of the swing arm 321 is composed of two relatively arranged plates, so that the middle of the swing arm 321 is hollow. A connecting shaft passing through these two plates is connected to the first end of the swing arm 321, and the connecting shaft is connected to the manual release push rod 2111. When the swing arm 321 swings, the manual release push rod 2111 can rotate around its own axis and remain connected to the swing arm 321.

[0101] In some embodiments of the present invention, in order to make the pulling member 323 run more smoothly, along the layout path of the pulling member 323, a plurality of pulley assemblies are provided on the elevator body, and the pulling member 323 is wound around the pulley assemblies (not shown in the figure).

[0102] Among them, the pulley group includes a plurality of pulley seats and pulleys corresponding to the pulley seats one by one. The pulleys are fixed on the elevator body 1, and the pulleys are rotatably connected to the pulley seats, and the pulling member 323 is wound around the pulleys. In addition, in order to prevent friction between the end face of the pulley and the pulley seat, a spacer sleeve (not shown in the figure) can be provided between the pulley and the pulley seat. Of course, along the layout path of the pulling member 323, a plurality of rollers can also be provided on the elevator body 1, and the pulling member 323 can be wound around the rollers.

[0103] In some embodiments of the present invention, as Figure 5 shown, in order to enable the second reset member 322 to move in a specific direction, a guiding member 324 is provided on the first mounting member 31 and penetrates through the swing arm 321, and the second reset member 322 in the form of a spring is sleeved on the guiding member 324. The guiding member 324 is used to provide guidance for the movement of the second reset member 322. The guiding member 324 passes through the avoidance hole on the swing arm 321, so that when the swing arm 321 swings, it will not interfere with the guiding member 324.

[0104] In some embodiments of the present invention, in order to prevent the second reset member 322 from being overly compressed, a limit sleeve may be sleeved on the guide member 324, and the limit sleeve is located between the inner wall of the first mounting member 31 and the second reset member 322. The swing arm assembly 32 can be accurately limited to the first position by the pulling member 323 and the limit sleeve.

[0105] In some embodiments of the present invention, in order to reduce the friction between the swing arm 321 and the limiting portion 3311 of the force applying member 331 during the swinging process of the swing arm 321, a rolling member 3211 is rotatably provided at the second end of the swing arm 321. By means of this rolling member 3211, the sliding friction between the swing arm 321 and the limiting portion 3311 is converted into the rolling friction between the rolling member 3211 and the limiting portion 3311. Among them, the rolling member 3211 can be components such as a roller, a roller shaft or a bearing.

[0106] As Figure 5 shown, in some embodiments of the present invention, the brake release device 3 further includes a brake release trigger assembly 34. The brake release trigger assembly 34 includes a microswitch 341 and a fourth trigger member 342 for triggering the action of the microswitch 341. The microswitch 341 is arranged on the moving path of the force applying assembly 33, is respectively connected to the warning device and the timing device, and forms a circuit with the backup battery. The fourth trigger member 342 is arranged on the force applying assembly 33 and keeps abutting against the microswitch 341 when moving along with the force applying assembly 33, so as to keep the triggering action of the microswitch 341, and the operation is safe and reliable with high sensitivity.

[0107] When the force applying assembly 33 moves upward, it drives the fourth trigger member 342 to move upward to trigger the contact (action reed) of the microswitch 341, so that the microswitch 341 is closed, thereby causing the warning device to issue an alarm to warn the staff around the running passage of the lift body 1, and at the same time the timing device starts timing to obtain the time for the manual descent of the lift body 1. Among them, the warning device can be a warning light, a buzzer or a warning device with both a warning light and a buzzer.

[0108] As Figure 4 shown, in some embodiments of the present invention, the fourth trigger member 342 is provided with a first connecting portion 3421 and a first triggering portion 3422. The first connecting portion 3421 can be installed on the force applying assembly 33 through fasteners such as bolts. The first end of the first triggering portion 3422 is connected to the first connecting portion 3421 and is arranged at an angle with the first connecting portion 3421. The second end of the first triggering portion 3422 extends along the moving path of the force applying assembly 33 and is used to keep abutting against the microswitch 341. Among them, the first connecting portion 3421 can be used as the abutting portion of the force applying member 331 to realize the abutting against the first reset member 332, so that there is no need to additionally provide an abutting portion for abutting against the first reset member 332.

[0109] Among them, the included angle between the first trigger part 3422 and the first connecting part 3421 can include 90°, excluding 0° and 180°, that is, there is no parallel or coplanar situation between the first trigger part 3422 and the first connecting part 3421. Equivalently, the moving path of the first trigger part 3422 and the force - applying component 33 can be set in parallel. Thus, driven by the force - applying component 33, the first trigger part 3422 can always be in contact with the contact of the micro - switch 341, thereby ensuring the reliability of the motor brake release component.

[0110] In some embodiments of the present invention, in order to prevent rigid collision when the micro - switch 341 abuts against the first trigger part 3422, a transition part 3423 is inclinedly arranged between the first connecting part 3421 and the first trigger part 3422. When the force - applying component 33 moves upward, the contact of the micro - switch 341 can gradually move from the transition part 3423 to the first trigger part 3422 and abut against the first trigger part 3422. The transition part 3423 is arc - transitioned with the first connecting part 3421 and the first trigger part 3422 respectively.

[0111] As Figure 1 shown, the tower - barrel elevator provided by some embodiments of the present invention further includes a pull - rope switch assembly 6. The pull - rope switch assembly 6 includes a pull - rope 61 and a pull - rope switch 62. The pull - rope switch 62 is adapted to be arranged at the first end of the ladder 10 and connected to the control circuit of the elevator body 1. The first end of the pull - rope 61 is connected to the pull - rope switch 62, and the second end of the pull - rope 61 is adapted to be connected to the second end of the ladder 10. The pull - rope 61 is configured to trigger the pull - rope switch 62 to act under the action of traction force.

[0112] It can be understood that the pull - rope switch 62 is arranged at the low - end or high - end of the ladder 10. The first end of the pull - rope 61 is connected to the pull - rope switch 62, and the second end of the pull - rope 61 extends along the ladder 10 to the other end of the ladder 10 and is fixedly connected to the ladder 10.

[0113] When a traction force is applied to the pull - rope switch 62 through the pull - rope 61, the pull - rope switch 62 can be triggered to perform a switching action, cutting off the control circuit of the elevator body 1 and controlling the elevator body 1 to stop running. In this way, when an emergency occurs, the climbing personnel on the ladder can control the elevator body 1 to stop running by pulling the pull - rope 61, preventing the elevator from causing harm to people.

[0114] As Figure 1 、 Figure 11 and Figure 12 shown, the tower - barrel elevator provided by some embodiments of the present invention further includes a guard - rail assembly 7. The guard - rail assembly 7 includes a guard - rail 71, a door body 72 and a guard - rail lock 73. The door body 72 is connected to the guard - rail 71 to enclose a maintenance space 74 for the elevator body 1 to pass through. The guard - rail lock 73 is used to lock the door body 72 and the guard - rail 71 to close the maintenance space 74.

[0115] Among them, the door body 72 is connected to the guardrail 71 to enclose a vertically penetrating frame structure. The guardrail assembly 7 is correspondingly arranged with the platform inside the tower barrel. When the elevator body 1 needs to dock on the platform, it runs into the corresponding guardrail assembly 7. The sliding door of the car faces the door body 72. Personnel can enter and exit the car by opening the door body 72 and the sliding door.

[0116] The guardrail lock 73 is connected to the control circuit of the elevator body 1. When the guardrail lock 73 is in the state of locking the door body 72 and the guardrail 71, the elevator body 1 can run; when the guardrail lock 73 is in the state of unlocking the door body 72 and the guardrail 71, the elevator body 1 cannot run. In this way, it can be ensured that when the elevator body 1 runs, the guardrail 71 and the door body 72 are always in the locked state, ensuring that the operator cannot enter the guardrail assembly 7 when the elevator body 1 is running, and guaranteeing personnel safety.

[0117] As Figure 1 、 Figure 12 and Figure 13 As shown in

[0118] The tower barrel elevator provided by some embodiments of the present invention further includes a platform trigger assembly 8. The platform trigger assembly 8 includes a third trigger 81 and a second detection switch 82. The third trigger 81 is connected to the guardrail 71, and the second detection switch 82 is connected to the elevator body 1. The third trigger 81 is configured to trigger the second detection switch 82 to act when the elevator body 1 moves up and down to the enclosed space, so that the door lock of the elevator body 1 is in the open state.

[0119] Among them, the second detection switch 82 is installed at a position corresponding to the third trigger 81 on the outer side of the car. The elevator body 1 includes a car, and the car door is provided with a door lock, which can be an electromagnetic door lock. The second detection switch 82 is connected to the control circuit of the door lock.

[0120] Specifically, the third trigger member 81 is provided with a third connecting portion and a third trigger portion that are connected to each other. The third connecting portion can be installed on the guardrail 71 through fasteners such as bolts. The third trigger portion is provided with a first transition surface 811, a trigger surface 812, and a second transition surface 813 that are connected in sequence. The trigger surface 812 extends along the moving direction of the elevator body 1. The first transition surface 811 and the second transition surface 813 respectively extend obliquely in opposite directions from the upper and lower ends of the trigger surface 812, and are respectively arc-transitioned with the trigger surface 812.

[0121] When the elevator body 1 moves upward to the guardrail assembly 7, the contact of the second detection switch 82 slides from the first transition surface 811 to the trigger surface 812 and abuts against the trigger surface 812, causing the second detection switch 82 to be in a closed state, so that the door lock of the elevator body 1 is in a state where it can be opened. When the elevator body 1 moves downward to the guardrail assembly 7, the contact of the second detection switch 82 slides from the second transition surface 813 to the trigger surface 812, causing the second detection switch 82 to be in a closed state, so that the door lock of the elevator body 1 is in a state where it can be opened.

[0122] Among them, the second detection switch 82 can be the same as the first detection switch 52, and both can be contact position sensors. During the relative movement of the elevator body 1 with respect to the guardrail assembly 7, the relative movement of the second detection switch 82 and the third trigger member 81 triggers the movement of the contact of the second detection switch 82, so that the second detection switch 82 is in a closed state, completing the signal output that the elevator body 1 reaches the enclosed space 74, and making the door lock of the elevator body 1 in a state where it can be opened.

[0123] As Figure 2 shown, the tower crane elevator provided by some embodiments of the present invention further includes a braking assembly 9. The braking assembly 9 includes a first safety lock 91, a second safety lock 92, and a braking rope 93. The braking rope 93 is adapted to be fixed to the ladder 10 and extends along the ladder 10. The first safety lock 91 and the second safety lock 92 are fixed to the elevator body 1 and arranged along the braking rope 93. The first safety lock 91 is configured to lock with the braking rope 93 when the moving speed of the elevator body 1 exceeds the first set speed. The second safety lock 92 is configured to lock with the braking rope 93 when the moving speed of the elevator body 1 exceeds the second set speed. Among them, the first set speed is less than the second set speed.

[0124] Among them, the first end of the braking rope 93 is fixed to the bottom end of the ladder 10, and the second end of the braking rope 93 is fixed to the top end of the ladder 10 and passes through the first safety lock 91 and the second safety lock 92. The first safety lock 91 and the second safety lock 92 have the same structure and are both mechanical safety locks, including a speed measuring wheel, a centrifugal throw-off block, an unlocking mechanism, and a return spring. The centrifugal throw-off block is coaxially and fixedly connected to the speed measuring wheel, the return spring is connected to the unlocking mechanism, and the unlocking mechanism is used to lock or unlock the braking rope.

[0125] When the elevator body 1 runs at a normal speed, the braking rope 93 moves within the first safety lock 91 and the second safety lock 92, driving the speed measuring wheel to rotate, and the centrifugal throw-off block will rotate with the speed measuring wheel. Under the action of the return spring, the unlocking mechanism is in an open state to unlock the braking rope. When the running speed of the elevator body 1 exceeds a certain range, the speed measuring wheel reaches the corresponding rotational speed, the centrifugal throw-off block expands outwards, resists the elastic force of the return spring, and triggers the rope locking mechanism to lock the braking rope, thereby preventing the elevator body 1 from continuing to run.

[0126] Among them, the pre-tightening force of the return spring in the first safety lock 91 is less than the pre-tightening force of the return spring in the second safety lock 92. When the running speed of the elevator body 1 exceeds the first set speed, the centrifugal throw-off block of the first safety lock 91 can resist the elastic force of the return spring therein to achieve rope locking through the first safety lock 91. When the running speed of the elevator body 1 exceeds the second set speed, the centrifugal throw-off block of the second safety lock 92 can resist the elastic force of the return spring therein to achieve rope locking through the second safety lock 92.

[0127] It can be understood that the triggering speed of the first safety lock 91 is less than the triggering speed of the second safety lock 92. When the running speed of the elevator body 1 exceeds the normal range, the first safety lock 91 is triggered first. Only when the first safety lock 91 fails will the second safety lock 92 be triggered to achieve double protection of the elevator and improve the safety performance of the elevator.

[0128] As Figure 3 shown, in some embodiments of the present invention, the driving device 2 further includes a frequency converter 22, which is powered by an external power supply, its control end is connected to the operation button of the elevator body 1, and the output end of the frequency converter 22 can be directly connected to the three-phase input terminals of the motor 21, or the output end of the frequency converter is connected to the three-phase input terminals of the motor through a corresponding contactor.

[0129] When the frequency converter 22 receives a control instruction to start the operation of the elevator body 1 (i.e., pressing the up or down operation button), it controls the speed of the motor 21 to gradually increase to the set speed; when the frequency converter 22 receives a control instruction to stop the operation of the elevator body 1, it controls the speed of the motor 21 to gradually decrease from the set speed to zero, so as to realize the slow start and slow stop of the elevator body 1, thereby reducing vibration and impact and prolonging the service life of the steel wire rope. When an emergency occurs, the control device can control the frequency converter according to an external emergency instruction to realize the rapid stop of the elevator body 1 and prevent accidents from happening.

[0130] Further, as Figure 3 shown, the tower crane elevator provided by some embodiments of the present invention further includes an overload detection device 23. The overload detection device 23 is arranged on the elevator body 1 and is communicatively connected to the control device of the elevator body 1. The overload detection device 23 is used to detect the load of the elevator body 1 and can be a weighing sensor; the control device includes but is not limited to a microprocessor, a PLC controller, and a single-chip microcomputer.

[0131] Among them, the overload detection device 23 can detect the static load of the elevator body 1, and can also detect the dynamic load of the elevator body 1 when starting or stopping, and send the detected load information to the control device and record it. When the elevator body 1 is running, if the cable gets stuck, it will cause the load of the elevator body 1 to fluctuate. The overload detection device 23 can timely send the detected load to the control device, and the control device compares the load with a pre-set load threshold. If it is overloaded, the frequency converter controls the motor 21 to stop quickly, so that the elevator body 1 stops running quickly, avoiding the cable from being pulled off and improving the safety factor of the elevator. At the same time, the control device can send out an alarm signal for warning.

[0132] In some embodiments of the present invention, a centrifugal speed limiter (not shown in the figure) is connected to the power output end of the motor 21. A braking capacitor (not shown in the figure) is connected to the stator winding of the motor 21. The centrifugal speed limiter and the braking capacitor are used to limit the descending speed of the elevator body 1 during the descending process of the elevator body 1.

[0133] During the manual descent of the elevator body 1, the limiting speed of the centrifugal speed limit is greater than the rated speed, and the centrifugal speed limiter will wear out greatly. In this embodiment, by adding a braking capacitor, the rotation of the rotor of the motor 21 cuts the stator winding, generating a braking torque opposite to the rotation direction of the motor 21, so that the speed of the motor 21 decreases or stops rotating, realizing the speed limit of the manual descent. The braking capacitor can reduce the use frequency of the centrifugal speed limiter and prolong the service life of the centrifugal speed limiter.

[0134] An embodiment of the present invention further provides a tower barrel, which includes a barrel body and the tower barrel elevator described in any of the foregoing embodiments. A ladder 10 is arranged in the barrel body along its height direction, and the elevator body 1 is guidingly connected to the ladder 10.

[0135] An embodiment of the present invention further provides a wind power generation set, which includes a machine head, an impeller and the tower barrel described in any of the foregoing embodiments. The impeller is rotatably connected to the machine head, and the machine head is rotatably connected to the tower barrel.

[0136] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A tower barrel elevator, characterized in that, include: A lift body, comprising a support mechanism and adapted to be connected to a ladder via the support mechanism; The anti-collision device comprises a first detection switch, a second mounting member, a first elastic trigger component and a second elastic trigger component respectively connected to the elevator body; The second mounting member is mounted on the lift body, and the first detection switch is mounted on the second mounting member; The first detection switch is connected to the control circuit of the elevator body, and the first elastic trigger component is located at the front side of the support mechanism at the front end of the elevator body in its movement direction; the first elastic trigger component is configured to be actuated by the contact of an obstacle on the ladder to trigger the action of the first detection switch; The first elastic trigger assembly includes a trigger component and an elastic component, the trigger component is rotatably connected to the second mounting member and abuts against the contact of the first detection switch, and the elastic component is connected between the trigger component and the second mounting member to reset the trigger component; The trigger component includes: a swing member, rotatably connected to the second mounting member and connected to the elastic member; a first trigger member, connected to the swing member and abutting against a contact of the first detection switch; a second trigger member, connected to the first trigger member, configured to touch an obstacle on the ladder during the movement of the lift body; The second elastic trigger component is connected to the lift body and is located at the rear side of the support mechanism at the rearmost end of the lift body in the direction of movement, and the second elastic trigger component is configured to be actuated by contact with an obstacle on the ladder to link the first elastic trigger component to actuate; The second elastic trigger component is provided with another second trigger member for contacting an obstacle, and the second trigger member of the second elastic trigger component is connected with the second trigger member of the first elastic trigger component through a brake line.

2. The tower barrel elevator according to claim 1, wherein Also includes: A pull cord switch assembly, comprising a pull cord and a pull cord switch; The pull rope switch is suitable for being arranged at the first end of the ladder and connected to the control circuit of the elevator body; the first end of the pull rope is connected to the pull rope switch, the second end of the pull rope is suitable for being connected to the second end of the ladder, and the pull rope is configured to trigger the action of the pull rope switch under the action of traction force.

3. The tower crane elevator according to claim 1, characterized in that Also includes: A guardrail assembly, comprising a guardrail, a door body and a guardrail lock, wherein the door body is connected to the guardrail to enclose a protective space for the elevator body to pass through; The guardrail lock is used to lock the door body and the guardrail to close the enclosure space, and the guardrail lock is connected to the control circuit of the elevator body.

4. The tower crane elevator according to claim 3, wherein, Also includes: A platform trigger assembly, including a third trigger member and a second detection switch; The third trigger member is connected to the guardrail, the second detection switch is connected to the elevator body, and the third trigger member is configured to trigger the second detection switch when the elevator body is lifted and moved to the enclosed space, so that the door lock of the elevator body is in an open state.

5. The tower crane elevator according to claim 1, characterized in that, Also includes: A brake assembly, comprising a brake rope, a first safety lock and a second safety lock; The braking rope is adapted to be fixed to the climbing ladder and extend along the climbing ladder; the first safety lock and the second safety lock are fixed to the elevator body and arranged along the braking rope; The first safety lock is configured to lock with the braking rope when the moving speed of the elevator body exceeds a first set speed, and the second safety lock is configured to lock with the braking rope when the moving speed of the elevator body exceeds a second set speed, and the first set speed is less than the second set speed.

6. A tower barrel, characterized in that, It includes a cylinder body and the tower barrel elevator according to any one of claims 1-5. A climbing ladder is arranged in the cylinder body along its height direction, and the elevator body is guidingly connected to the climbing ladder through the supporting mechanism.

7. A wind turbine generator, comprising a machine head and an impeller, wherein the impeller is rotatably connected to the machine head, and is characterized in that, It further includes the tower barrel according to claim 6, and the machine head is rotatably connected to the tower barrel.

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