Stop device with rail clamping function

Abstract

The invention discloses a stop device with a rail clamping function. The stop device comprises a base frame, a guide rail and a guide rail, the main shaft is horizontally and rotatably mounted on the base frame around the axis of the main shaft; the wedge block is connected to the main shaft, the first end of the wedge block is provided with an arc-shaped surface, and the wedge block has a first state and a second state; the rail clamping mechanism is connected to the second end, opposite to the arc-shaped surface, of the wedge block, and the rail clamping mechanism comprises two brake arms which are oppositely arranged; the first driving mechanism is arranged on the base frame, is in transmission connection with the main shaft and is used for controlling the main shaft to rotate; when the main shaft rotates clockwise to drive the wedge block to be in the first state, the wedge block abuts against the upper end of the rail, the arc-shaped face of the wedge block faces upwards and faces the wheel, and the rail is clamped by the brake arm. And when the main shaft rotates anticlockwise to drive the wedge block to be in the second state, the wedge block and the rail clamping mechanism are both lifted upwards relative to the rail. The stop device can clamp the rail to ensure that the wedge block is connected with the rail, and the windproof capacity of the rail crane is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of rail hoist, in particular to a stop device with rail clamping function. BACKGROUND

[0002] In the field of rail hoist, anti-climber is a widely used core windproof device. Its working principle is to insert an iron wedge between the walking wheel of the hoist and the rail, use the mechanical limiting action of the wedge to prevent the wheel from rolling, and thus avoid the unintended displacement of the hoist under the action of wind load, and finally realize the windproof safety protection function. In actual application scenarios, such iron wedge braking device usually adopts symmetrical arrangement form, and is specifically installed at the front and rear positions of the walking wheel of the rail-mounted hoist to ensure the balance of the braking force.

[0003] However, the existing anti-climber device only relies on the friction force between the wedge itself gravity and the surface of the steel rail to maintain positioning, resulting in unstable braking reliability. Affected by many uncertain factors such as wedge wear degree, steel rail surface flatness, wind load instantaneous strength, etc., the braking effect is often good or bad. What is particularly critical is that when the hoist wheel produces a large displacement trend or actual displacement due to external force, the iron wedge will move along the rail direction with the device, and cannot form a rigid connection with the rail to realize the integrated fixation of the two. Based on the above defects, the existing anti-climber has been difficult to meet the technical requirements of stable and reliable stop performance of the rail hoist, and needs to be optimized and improved in structure. SUMMARY

[0004] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application provides a stop device with rail clamping function, which can clamp the rail to ensure that the wedge and the rail remain connected and improve the windproof capability of the rail hoist.

[0005] The stop device with rail clamping function according to the embodiments of the present application comprises: a base frame; a main shaft rotatably mounted on the base frame about its own axis; a wedge connected to the main shaft, the first end of the wedge being provided with an arc surface, the wedge having a first state and a second state; a rail clamping mechanism connected to the second end of the wedge opposite the arc surface, the rail clamping mechanism comprising two oppositely arranged brake arms; a first drive mechanism arranged on the base frame and drivingly connected to the main shaft for controlling the rotation of the main shaft; When the main shaft rotates clockwise and drives the wedge block to the first state, the wedge block abuts against the upper end of the rail, and the arc-shaped surface faces upward toward the wheel, and the brake arm clamps the rail; when the main shaft rotates counterclockwise and drives the wedge block to the second state, both the wedge block and the rail clamping mechanism are raised upward relative to the rail.

[0006] The stop device with rail clamping function according to the embodiments of this application has at least the following beneficial effects: By installing a rail clamping mechanism on the wedge, when the wheels of the rail crane are displaced in a non-working state, the brake arm of the rail clamping mechanism clamps the rail to form an integral structure between the wedge and the rail. This effectively prevents the wedge from moving synchronously along the rail with the equipment, improving the wind protection effect of the rail crane and meeting the technical requirements of rail cranes for stable and reliable stopping performance. The rail clamping mechanism only assists the wedge in stopping, rather than stopping the wheels by clamping the rail. Therefore, there is no need to set up a high-power, large-size rail clamping mechanism, which can improve the wind protection effect of the rail crane at a low cost.

[0007] In some embodiments of this application, the rail clamping mechanism further includes: The mounting bracket is connected to the wedge block, and both brake arms are hinged to the mounting bracket; A second drive mechanism is mounted on the mounting bracket, and the second drive mechanism controls the relative rotation of the two brake arms.

[0008] In some embodiments of this application, the mounting bracket is equipped with a first position switch, which is located on the movement path of the brake arm and is electrically connected to the first drive mechanism. When the brake arm rotates to a set angle and triggers the first position switch, the first drive mechanism drives the main shaft to rotate counterclockwise.

[0009] In some embodiments of this application, the first driving mechanism includes: The cylinder body is rotatably connected to the base frame; The telescopic rod is slidably mounted on the cylinder body; The connecting rod is hinged between the telescopic rod and the main shaft.

[0010] In some embodiments of this application, the base frame is equipped with a second position switch, which is located on the movement path of the connecting rod and is electrically connected to the first drive mechanism. When the connecting rod rotates around the main shaft by a set angle to trigger the second position switch, the first drive mechanism stops operating and remains in the current position.

[0011] In some embodiments of this application, guide wheel assemblies are installed on both opposite sides of the wedge, and the two guide wheel assemblies are configured to rotate and abut against the two opposite sidewalls of the rail.

[0012] In some embodiments of this application, the guide wheel assembly includes: A connecting block is installed on the wedge block; A rotating shaft passes through the connecting block; A guide wheel is rotatably mounted on the rotating shaft around its own axis, and the outer peripheral wall of the guide wheel abuts against the side wall of the rail. The length extension direction of the rotating shaft is perpendicular to the length extension direction of the main shaft.

[0013] In some embodiments of this application, the rotating shaft is fitted with an elastic element, the guide wheel and the elastic element are respectively disposed on opposite sides of the connecting block, and the two ends of the elastic element abut against the rotating shaft and the connecting block respectively.

[0014] In some embodiments of this application, the spindle is equipped with a handle, which passes through the spindle in the radial direction. The lever and the first drive mechanism are respectively connected to the two ends of the main shaft along its length.

[0015] In some embodiments of this application, the wedge is connected to the main shaft via a lever assembly, the wedge is hinged to the lever assembly, and the length extension direction of the lever assembly is perpendicular to the length extension direction of the main shaft.

[0016] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0017] The present application will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a schematic diagram of the axonal structure of an embodiment of this application; Figure 2 This is a front view of an embodiment of this application; Figure 3 This is a side view of an embodiment of the application; Figure 4 for Figure 2 Schematic diagram of the middle clamping mechanism; Figure 5 for Figure 1 Enlarged view of point A in the middle.

[0018] Icon labels: Base frame 100, first drive mechanism 110, cylinder 111, telescopic rod 112, connecting rod 113, second position switch 120; Main spindle 200, lever 210; Lever component 300; Wedge 400, arc surface 410; Rail clamping mechanism 500, mounting bracket 510, second drive mechanism 520, transmission component 530, brake arm 540, first position switch 550; Guide wheel assembly 600, connecting block 610, rotating shaft 620, guide wheel 630, elastic element 640. Detailed Implementation

[0019] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0020] In the description of this application, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0021] In the description of this application, "multiple" refers to two or more. The use of "first" and "second" is for the purpose of distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features indicated, or the order in which the technical features are indicated.

[0022] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0023] Reference Figures 1 to 5 This application discloses a stopping device with rail clamping function, which is installed at the wheel position of a rail crane to stop the rail crane. The stopping device of this application includes a base frame 100, a main shaft 200, a wedge block 400, a rail clamping mechanism 500, and a first drive mechanism 110.

[0024] The base frame 100 is connected to the rail-mounted crane, and the main shaft 200 is mounted on the base frame 100 in a horizontally rotatable manner around its own axis.

[0025] The wedge 400 is connected to the main shaft 200. The first end of the wedge 400 is provided with an arc-shaped surface 410, which is used to contact the wheels of the rail crane to stop the rail crane. The wedge 400 has a first state and a second state. When the wedge 400 is in the first state, the wedge 400 abuts against the upper end of the rail; when the wedge 400 is in the second state, the wedge 400 is raised upward relative to the rail.

[0026] The rail clamping mechanism 500 is connected to the second end of the wedge block 400 opposite to the arc-shaped surface 410. When the wedge block 400 is in the second state, both the wedge block 400 and the rail clamping mechanism 500 are raised relative to the rail. The rail clamping mechanism 500 includes two opposing brake arms 540. When the wedge block 400 is in the first state, the two brake arms 540 can clamp the rail to assist the wedge block 400 in stopping the rail crane.

[0027] The first drive mechanism 110 is mounted on the base frame 100 and is connected to the main shaft 200 for transmission. It is used to control the main shaft 200 to rotate clockwise or counterclockwise. When the main shaft 200 rotates clockwise and drives the wedge block 400 to the first state, the wedge block 400 abuts against the upper end of the rail, and the arc surface 410 faces upward toward the wheel. The brake arm 540 clamps the rail to stop the rail crane. When the main shaft 200 rotates counterclockwise and drives the wedge block 400 to the second state, both the wedge block 400 and the rail clamping mechanism 500 are raised relative to the rail so that the wheels of the rail crane can roll normally.

[0028] In some embodiments of this application, reference is made to Figure 1 , Figure 2 As shown, the base frame 100 is connected to the rail-mounted crane via bolts or other fasteners. The main shaft 200 is rotatably mounted on the base frame 100 around its own axis. A first drive mechanism 110 is connected to the first end of the main shaft 200 along its length, and a lever 210 is mounted to the second end of the main shaft 200 along its length. The middle position of the main shaft 200 is connected to a wedge 400 via a lever assembly 300. The first drive mechanism 110 is typically electrically, pneumatically, or hydraulically driven to drive the main shaft 200 to rotate. The lever 210 passes through the main shaft 200 along its radial direction, facilitating manual rotation of the main shaft 200. The length extension direction of the lever assembly 300 is perpendicular to the length extension direction of the main shaft 200, i.e., with... Figure 1 , Figure 2 For example, when the wedge 400 is in the first state of abutting against the upper end of the rail, the length extension direction of the lever assembly 300 is roughly vertical. The top of the lever assembly 300 is connected to the main shaft 200 for transmission, and the wedge 400 is hinged to the bottom end of the lever assembly 300. When the main shaft 200 rotates clockwise or counterclockwise, it will drive the lever assembly 300 to rotate synchronously, which in turn will drive the wedge 400 to rotate synchronously.

[0029] In some embodiments of this application, reference is made to Figure 2 , Figure 3 As shown, the first drive mechanism 110 includes a cylinder body 111, a telescopic rod 112, and a connecting rod 113. The bottom end of the cylinder body 111 is rotatably connected to the base frame 100, the telescopic rod 112 is slidably mounted on the cylinder body 111, and the connecting rod 113 is hinged between the telescopic rod 112 and the main shaft 200. Figure 3 For example, when the cylinder 111 drives the telescopic rod 112 to extend upwards, it will drive the main shaft 200 to rotate counterclockwise via the connecting rod 113, so that the wedge block 400 switches from the first state to the second state; conversely, when the cylinder 111 drives the telescopic rod 112 to retract downwards, it will drive the main shaft 200 to rotate clockwise via the connecting rod 113, so that the wedge block 400 switches from the second state to the first state. Since the telescopic rod 112 moves linearly, while the connecting rod 113 drives the main shaft 200 to rotate in a circular motion, the bottom end of the cylinder 111 must be rotatably mounted on the base frame 100.

[0030] In some embodiments of this application, when the wedge 400 switches from the first state to the second state, the first drive mechanism 110 needs to provide power to push the telescopic rod 112 to extend. However, when the wedge 400 switches from the second state to the first state, the first drive mechanism 110 does not need to provide power, allowing the wedge 400 to switch from the second state to the first state by its own gravity.

[0031] It should be noted that when the cylinder block 111 is in the first state, the telescopic rod 112 is in a nearly fully retracted position; that is, the telescopic rod 112 is not at the end of its downward retraction stroke. This design is to allow the wedge block 400 to achieve a better stopping effect. Figure 3 For example, when the wedge 400 is in the first state, since the ground or the upper surface of the rail is not completely flat, when the wheel presses on the arc surface 410 of the wedge 400 from right to left, the wedge 400 will rotate at a small angle around the hinge with the lever assembly 300. The right end of the wedge 400 will stick to the upper surface of the rail, and the left end of the wedge 400 will tilt slightly upward, so that the wedge 400 fits better with the wheel and produces a better stopping effect.

[0032] At the same time, when the wheel presses against the arc surface 410, the wedge block 400 as a whole is subjected to the component force pressing against the rail, which will cause a small displacement downward, thereby causing the lever assembly 300 to move downward simultaneously by a small distance, and causing the main shaft 200 to rotate at a small angle. The rotation of the main shaft 200 causes the connecting rod 113 to rotate at a certain angle, so that the end of the connecting rod 113 away from the main shaft 200 moves a small distance towards the first drive mechanism 110. Since the telescopic rod 112 still has room to retract downward at this time, the rotation of the connecting rod 113 will not cause damage to the first drive mechanism 110.

[0033] In some embodiments of this application, the clamping mechanism 500 is mounted on the wedge block 400. Therefore, when the lever assembly 300 drives the wedge block 400 to rotate synchronously, the wedge block 400 also drives the clamping mechanism 500 to rotate synchronously. (Refer to...) Figure 3 , Figure 4 As shown, the rail clamping mechanism 500 of this embodiment includes a mounting frame 510, a second drive mechanism 520, and a transmission component 530. The mounting frame 510 is connected to the wedge block 400, and both brake arms 540 are hinged to the mounting frame 510. The second drive mechanism 520 and the transmission component 530 are both mounted on the mounting frame 510. The second drive mechanism 520 is connected to the two brake arms 540 through the transmission component 530, and is used to drive the two brake arms 540 to rotate around the hinge point with the mounting frame 510, so as to realize that the two brake arms 540 move closer to each other to clamp the rail, or the two brake arms 540 move away from each other to release the rail.

[0034] In some specific embodiments, the second drive mechanism 520 can be a motor, and the transmission component 530 includes a reduction gearbox and a lead screw. The reduction gearbox is connected to the motor and the lead screw in a transmission manner. The lead screw passes through the two brake arms 540 and is connected to the two brake arms 540 in a transmission manner. The motor drives the lead screw to rotate forward or backward around its own axis through the reduction gearbox, thereby causing the two brake arms 540 to move closer or further away from each other.

[0035] It is conceivable that the second drive mechanism 520 and the transmission component 530 may also adopt other technical solutions depending on the specific implementation scenario, and are not limited in this embodiment; the size, shape, etc. of the brake arm 540 may be specifically set according to the specific implementation scenario, and are not limited in this embodiment.

[0036] In some embodiments of this application, reference is made to Figure 1 , Figure 5 As shown, guide wheel assemblies 600 are installed on both opposite sides of the wedge 400. The two guide wheel assemblies 600 are configured to rotate and abut against the two opposite side walls of the rail. Specifically, the cross-section of the rail is usually I-shaped, and the guide wheel assemblies 600 abut against the two side walls of the rail to assist the wedge 400 in centering its position.

[0037] In some embodiments of this application, reference is made to Figure 5As shown, the guide wheel assembly 600 includes a connecting block 610, a rotating shaft 620, and a guide wheel 630. The connecting block 610 is mounted on the wedge block 400, the rotating shaft 620 passes through the connecting block 610, and the guide wheel 630 is rotatably fitted onto the rotating shaft 620 around its own axis. The outer peripheral wall of the guide wheel 630 abuts against the side wall of the rail, and the length extension direction of the rotating shaft 620 is perpendicular to the length extension direction of the main shaft 200. The length of the rotating shaft 620, the size of the guide wheel 630, and the material can be specifically set according to actual conditions, and are not limited in this embodiment.

[0038] To improve the applicability of the guide wheel 630 assembly, the rotating shaft 620 of this application embodiment is provided with an elastic element 640. The guide wheel 630 and the elastic element 640 are respectively disposed on opposite sides of the connecting block 610. The two ends of the elastic element 640 abut against the top end of the rotating shaft 620 and the connecting block 610 respectively. The elastic element 640 can adopt a structure such as a spring.

[0039] In some embodiments of this application, to improve the automation level of the stopping device and reduce the probability of equipment damage, the mounting bracket 510 of this embodiment is equipped with a first position switch 550. The first position switch 550 is located on the movement path of the brake arm 540 and is electrically connected to the first drive mechanism 110. When the brake arm 540 rotates to a set angle and triggers the first position switch 550, the first drive mechanism 110 drives the main shaft 200 to rotate counterclockwise, causing the wedge block 400 to switch from the first state to the second state. Specifically, refer to... Figure 4 As shown, when the two brake arms 540 rotate at a set angle in a direction away from each other and trigger the first position switch 550, the distance between the two brake arms 540 is already greater than the width of the rail, so that when the wedge block 400 switches from the first state to the second state, no obstruction will be generated.

[0040] Furthermore, in some embodiments of this application, the base frame 100 is equipped with a second position switch 120, which is located on the movement path of the connecting rod 113 and is electrically connected to the first drive mechanism 110. When the connecting rod 113 rotates around the main shaft 200 by a set angle to trigger the second position switch 120, the first drive mechanism 110 stops operating and remains in the current position. Specifically, refer to... Figure 3 As shown, the second position switch 120 is located above the first drive mechanism 110. When the second position switch 120 is triggered, the wedge 400 has moved to the second state. The first drive mechanism 110 remains in the current position to ensure that the wedge 400 remains in the second state, thus avoiding obstruction to the rolling of the wheel.

[0041] In a specific embodiment, the first position switch 550 and the second position switch 120 can be either contact switches or non-contact switches, and no limitation is made in this embodiment.

[0042] The stopping device with rail clamping function of this application, by installing a rail clamping mechanism 500 on the wedge block 400, when the wheels of the rail crane are displaced in a non-working state, the brake arm 540 of the rail clamping mechanism 500 clamps the rail to make the wedge block 400 and the rail form an integral structure, thereby effectively preventing the wedge block 400 from moving synchronously with the equipment along the rail, improving the wind protection effect of the rail crane, and meeting the technical requirements of rail cranes for stable and reliable stopping performance. The rail clamping mechanism 500 only assists the wedge block 400 in stopping, rather than stopping the wheels by clamping the rail, so there is no need to set up a high-power, large-size rail clamping mechanism 500, which can improve the wind protection capability of the rail crane at low cost.

[0043] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine the different embodiments or examples described in this specification.

[0044] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application.

Claims

1. A stop device with a rail clamping function, characterized in that The utility model relates to a rail clamp mechanism, including: a base frame; a main shaft, which is horizontally rotatable around its own axis and is installed on the base frame; a wedge block, which is connected to the main shaft, has an arc surface on its first end, and has a first state and a second state; a rail clamping mechanism, which is connected to the second end of the wedge block opposite to the arc surface, and includes two opposite brake arms; a first driving mechanism, which is arranged on the base frame and is drivingly connected to the main shaft, and is used for controlling the rotation of the main shaft; wherein, when the main shaft rotates clockwise to drive the wedge block to be in the first state, the wedge block abuts against the upper end of the rail, the arc surface faces upward to meet the wheel, and the brake arms clamp the rail; when the main shaft rotates counterclockwise to drive the wedge block to be in the second state, the wedge block and the rail clamping mechanism are both lifted upward relative to the rail.

2. The stop device with a rail clamping function according to claim 1, characterized in that, The rail clamping mechanism further includes: a mounting frame, which is connected to the wedge block, and to which the two brake arms are hingedly connected; a second driving mechanism, which is installed on the mounting frame and controls the relative rotation of the two brake arms.

3. The stop device with a rail clamping function according to claim 2, characterized in that, The mounting frame is provided with a first position switch, which is located on the movement path of the brake arms, and is electrically connected to the first driving mechanism; when the brake arms rotate to a set angle to trigger the first position switch, the first driving mechanism drives the main shaft to rotate counterclockwise.

4. The stopper with a rail function according to claim 1, wherein The first driving mechanism includes: a cylinder body, which is rotatably connected to the base frame; a telescopic rod, which is slidingly installed on the cylinder body; a connecting rod, which is hingedly connected between the telescopic rod and the main shaft.

5. The stop device with a rail clamping function according to claim 4, characterized in that, The base frame is provided with a second position switch, which is located on the movement path of the connecting rod, and is electrically connected to the first driving mechanism; when the connecting rod rotates around the main shaft to a set angle to trigger the second position switch, the first driving mechanism stops working and remains at the current position.

6. The stop device with a rail clamping function according to claim 1, characterized in that, The wedge block is provided with guide wheel assemblies on its opposite sides, and the two guide wheel assemblies are configured to abut against the opposite side walls of the rail when rotating.

7. The stop device with a rail clamping function according to claim 6, characterized in that, The guide wheel assembly includes: a connecting block, which is installed on the wedge block; a rotating shaft, which is arranged in the connecting block; a guide wheel, which is rotatably sleeved on the rotating shaft, and whose outer peripheral wall abuts against the side wall of the rail; the length extension direction of the rotating shaft is perpendicular to the length extension direction of the main shaft.

8. The stop device with a rail clamping function according to claim 7, characterized in that, The rotating shaft is sleeved with an elastic member, the guide wheel and the elastic member are arranged on the opposite sides of the connecting block respectively, and the two ends of the elastic member abut against the rotating shaft and the connecting block respectively.

9. The stopper with a rail function according to claim 1, wherein The main shaft is provided with a hand lever, which is arranged in the main shaft along the radial direction of the main shaft; the hand lever and the first driving mechanism are respectively connected to the two ends of the main shaft in the length direction.

10. The stop device with a rail clamping function according to claim 1, characterized in that, The wedge block is connected to the main shaft through a lever assembly, the wedge block is hingedly connected to the lever assembly, and the length extension direction of the lever assembly is perpendicular to the length extension direction of the main shaft.

Images