A tower crane ladder device and installation method thereof

Abstract

The present invention relates to the technical field of tower crane equipment, and specifically to a tower crane ladder device and an installation method thereof, wherein the tower crane ladder device comprises a tower and a telescopic ladder structure, wherein the tower comprises a tower body and an arm that can slide vertically relative to the tower body, and the telescopic ladder structure comprises a bottom ladder section and a plurality of sliding ladder sections, wherein the bottom ladder section is fixedly connected to the tower body, and the plurality of sliding ladder sections are slidably connected in sequence, and the bottom sliding ladder section is connected to the bottom ladder section, and the top sliding ladder section is connected to the arm. The telescopic ladder structure of the present invention can adaptively adjust the ladder length following the height of the arm to meet the use requirements of different heights, has good applicability, and the telescopic ladder structure of the present invention does not need to be stored after use, reducing the extra workload.

Description

Technical Field

[0001] The invention relates to the technical field of tower crane equipment, and in particular to a tower crane ladder device and an installation method thereof. Background Art

[0002] Tower crane equipment plays a role in lifting and feeding in the field of construction. The tower crane includes a tower column and a boom connected to the tower column by sliding. A hook or a pump pipe is arranged on the boom. The other end of the boom is a counterweight to balance the weight of the boom. The boom is connected to the operating room. When the boom slides along the tower column, it can drive the hook and the operating room to rise and fall together, so as to adjust the working height. The operator needs to climb a ladder to go up and down the operating room. When the working height of the boom changes, ladders of different lengths are often required.

[0003] As can be seen from the above, the existing ladders need to be equipped with different lengths according to the height of the boom, so the applicability is poor, and the need to be stored in time after use increases extra workload. Summary of the invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defects in the prior art that the ladder of the tower crane ladder device needs to be equipped with different lengths according to the boom height, resulting in poor applicability and increased storage workload, thereby providing a tower crane ladder device with good applicability and no need for storage and its installation method.

[0005] In order to solve the above problems, the present invention provides a tower crane ladder device, comprising: a tower frame, including a tower body and an arm that can slide vertically relative to the tower body; a telescopic ladder structure, including a bottom ladder section and a plurality of sliding ladder sections, the bottom ladder section is fixedly connected to the tower body, and the plurality of sliding ladder sections are slidably connected in sequence, and the sliding ladder section at the bottom is connected to the bottom ladder section, and the sliding ladder section at the top is connected to the arm.

[0006] Optionally, a sliding groove and a sliding part are provided on the front and back sides of the sliding ladder section, and the sliding part is located at the end of the sliding groove, between two adjacent sliding ladder sections, wherein the sliding part of one of the sliding ladder sections is slidably arranged in the sliding groove of the other sliding ladder section, and the sliding parts of the two sliding ladder sections can abut against each other for limiting positions.

[0007] Optionally, a vertical support portion is fixedly connected to the tower body, and the sliding ladder section is slidably connected to the vertical support portion.

[0008] Optionally, a vertical guide groove is provided on the vertical support portion, the sliding ladder section includes a ladder body and a sliding rod connected to each other, a sliding guide portion is provided at the end of the sliding rod, and the sliding guide portion is slidably provided in the vertical guide groove.

[0009] Optionally, the sliding guide portion is a guide wheel, and the guide wheel is hinged to the end of the sliding pull rod.

[0010] Optionally, the telescopic ladder structure further comprises a suspension rod, wherein the suspension rod is connected to the arm and another one of the sliding ladder sections located at the end.

[0011] Optionally, the tower crane ladder device further includes a ladder safety mechanism, which is connected to the boom and can cooperate with the sliding ladder section to support the sliding ladder section when the sliding ladder section is loose.

[0012] Optionally, the ladder safety mechanism includes a safety rope, which is connected to the arm, and a first matching part is provided on the safety rope, and a second matching part matching with the first matching part is provided on the sliding ladder section, and the second matching part is slidably mounted on the safety rope and located above the first matching part, or the first matching part is slidably mounted on the sliding ladder section and located below the second matching part.

[0013] Optionally, one of the first matching portion and the second matching portion is a cone-shaped seat, and the other one is a cone-shaped seat, and the cone-shaped seat can be clamped in the cone-shaped seat.

[0014] Optionally, the ladder safety mechanism further includes a tension sensor, which is disposed on the safety rope and is suitable for triggering an alarm.

[0015] Optionally, the tower crane ladder device also includes a maintenance platform, and the maintenance platform is arranged between the sliding ladder section and the tower body.

[0016] Optionally, the maintenance platform includes a cover plate shaft, a first cover plate and a second cover plate, the cover plate shaft is arranged on the sliding rod, the first cover plate and the second cover plate are rotatably connected to both sides of the cover plate shaft, and the first cover plate is located on one side of the tower body, and the second cover plate is located on one side of the ladder body.

[0017] Optionally, the tower crane ladder device also includes a pump pipe arranged along the tower body, the first cover plate includes a first left cover plate and a first right cover plate, a avoidance opening is provided between the first left cover plate and the first right cover plate, and the pump pipe is passed through the avoidance opening.

[0018] Optionally, the second cover plate includes a second left cover plate and a second right cover plate, the second left cover plate and the second right cover plate are both rotatably connected to the cover plate shaft, and there is a gap between the second left cover plate and the second right cover plate.

[0019] Optionally, the maintenance platform further includes: a first locking pin, adapted to be connected to the first cover plate and the sliding rod; and a second locking pin, adapted to be connected to the second cover plate and the sliding rod.

[0020] The present invention also provides an installation method for a tower crane ladder device, comprising the following steps: assembling a plurality of sliding ladder sections according to the shortest folded length and locking the assembled plurality of sliding ladder sections; vertically hoisting the locked plurality of sliding ladder sections to an installation position; connecting the bottom sliding ladder section with the bottom ladder section, and connecting the top sliding ladder section with an arm.

[0021] Optionally, the step of connecting the bottom sliding ladder section with the bottom ladder section and the top sliding ladder section with the arm includes: connecting the bottom sliding ladder section with the bottom ladder section, slidingly installing the sliding pull rod of the sliding ladder section in the vertical guide groove, unlocking the folded state of multiple sliding ladder sections, hanging the top sliding ladder and lifting it upwards, and after multiple sliding ladder sections are extended to the required length, connecting the top sliding ladder section with the suspension rod of the arm.

[0022] Optionally, the installation method also includes: sliding one end of the safety rope onto the sliding ladder section, and making the first mating part of the safety rope match the second mating part of the sliding ladder section, locking the other end of the safety rope with the arm and installing the tension sensor.

[0023] The present invention has the following advantages:

[0024] 1. The tower crane ladder device of the present invention realizes the adjustment of the working height of the tower crane ladder device through the vertical sliding of the boom along the tower body. Since the bottom ladder section is fixedly connected to the tower body, multiple sliding ladder sections are slidably connected in sequence, one of the sliding ladder sections located at the end is connected to the bottom ladder section, and another one of the sliding ladder sections located at the end is connected to the boom. Therefore, when the boom slides along the tower body, it can drive the sliding ladder sections to slide relatively telescopically, thereby realizing the extension or shortening of the overall length of the telescopic ladder structure, and then the telescopic ladder structure can adaptively adjust the ladder length according to the height of the boom, meet the use requirements of different heights, and has good applicability. In addition, the two sides of the telescopic ladder structure of the present invention are respectively connected to the boom and the tower body, and there is no need to store it after use, which reduces the extra workload.

[0025] 2. In the tower crane ladder device of the present invention, a slide groove and a sliding part are provided on the front and back of the sliding ladder section. The sliding part is located at the end of the slide groove, between two adjacent sliding ladder sections, and the sliding part of one sliding ladder section is slidably arranged in the slide groove of the other sliding ladder section, and the sliding parts of the two sliding ladder sections can abut against each other for limiting position. With the above arrangement, when the sliding ladder section slides, the sliding part of one sliding ladder section slides along the slide groove of its adjacent sliding ladder section, and the sliding cooperation between the sliding part and the slide groove ensures the accuracy of the sliding path. At the end of sliding, under the deadweight of the sliding ladder section, the sliding parts of the two adjacent sliding ladder sections abut against each other for limiting position, thereby realizing the limiting support of the lower sliding ladder section on the adjacent upper sliding ladder section, ensuring the stability of the entire telescopic ladder structure.

[0026] 3. The tower crane ladder device of the present invention has a vertical support portion fixedly connected to the tower body, and the sliding ladder section is slidably connected to the vertical support portion. When the arm frame drives the sliding ladder section to slide, the sliding ladder section can slide along the vertical support portion, thereby providing sliding support for the sliding ladder section through the vertical support portion, improving sliding stability and dispersing the force on the sliding ladder section.

[0027] 4. The tower crane ladder device of the present invention has a vertical guide groove on the vertical support part, and the sliding ladder section includes a ladder body and a sliding pull rod connected to each other, and the end of the sliding pull rod is provided with a sliding guide part, which is slidably arranged in the vertical guide groove of the vertical support part. When the sliding ladder section slides, the sliding guide part at the end of the sliding pull rod is driven to slide along the vertical guide groove, thereby guiding the sliding of the sliding ladder section and improving its sliding accuracy.

[0028] 5. In the tower crane ladder device of the present invention, the sliding guide part is a guide wheel, and the guide wheel is hinged to the end of the sliding pull rod. The guide wheel slides along the vertical guide groove to realize the sliding guidance of the sliding ladder section, and the guide wheel is hinged to the end of the sliding pull rod, which can prevent the guide wheel from getting stuck in the vertical guide groove when the sliding ladder section slides and drives the sliding pull rod to be deflected by an angle, thereby ensuring smooth sliding between the guide wheel and the vertical guide groove, thereby ensuring normal sliding of the sliding ladder section.

[0029] 6. The tower crane ladder device of the present invention further comprises a suspension rod, which is connected to the other sliding ladder section and the arm frame at the end. In this arrangement, the sliding ladder section transmits force to the arm frame through the suspension rod, and the arm frame is supported by force, which has good stability.

[0030] 7. The tower crane ladder device of the present invention also includes a ladder safety mechanism, which is connected to the boom. The ladder safety mechanism can cooperate with the sliding ladder section to support the sliding ladder section when the sliding ladder section is loose, thereby avoiding safety accidents caused by the sliding ladder section falling and improving safety of use.

[0031] 8. The tower crane ladder device of the present invention, the ladder safety mechanism includes a safety rope, the safety rope is connected to the boom, a first matching part is provided on the safety rope, a second matching part matching with the first matching part is provided on the sliding ladder section, and the second matching part is slidably sleeved on the safety rope and located above the first matching part. When the sliding ladder section becomes loose and falls, it drives the second matching part to slide along the safety rope, and the first matching part provided below the second matching part can match with the sliding second matching part, so as to support the loose sliding ladder section with force and transmit the force to the boom, thereby playing a safety insurance role.

[0032] 9. The tower crane ladder device of the present invention, the ladder safety mechanism also includes a tension sensor, which is arranged on the safety rope and is suitable for triggering an alarm. In this arrangement, the sliding ladder section loosens and slides down, driving the first matching part and the second matching part to cooperate. At this time, the safety rope supports the sliding ladder section with force, thereby triggering the tension sensor. The tension sensor determines that the sliding ladder section is loose and triggers the alarm, which then reminds the user to take corresponding measures in time.

[0033] 10. The tower crane ladder device of the present invention further includes a maintenance platform, which is arranged between the sliding ladder section and the tower body, so that users can go up to the maintenance platform to inspect the sliding ladder section and the tower body.

[0034] 11. The tower crane ladder device of the present invention, the maintenance platform includes a cover plate shaft, a first cover plate and a second cover plate, the cover plate shaft is arranged on the sliding rod, the first cover plate and the second cover plate can be rotatably connected to the two sides of the cover plate shaft, and the first cover plate is located on one side of the tower body, and the second cover plate is located on one side of the ladder body. With the above arrangement, when only the ladder body needs to be inspected, only the second cover plate can be opened to make it flat on the sliding rod, and the first cover plate on one side of the tower body can be rotated and folded to make way for the passage, and when only one side of the tower body needs to be inspected, only the first cover plate can be opened to make it flat on the sliding rod, and the second cover plate on one side of the ladder body can be rotated and folded to form a ladder passage for users to go up and down. Therefore, the first cover plate and the second cover plate of this embodiment can be used one by one or at the same time according to the maintenance needs. When one is used, the maintenance platform forms a half-passage and half-platform form, and when used at the same time, the maintenance platform forms a full platform form, which has strong applicability.

[0035] 12. The tower crane ladder device of the present invention, the first cover plate includes a first left cover plate and a first right cover plate, a avoidance opening is provided between the first left cover plate and the first right cover plate, and the pump pipe is passed through the avoidance opening. The first cover plate is arranged into a structure of the first left cover plate and the first right cover plate, and the user can open the first left cover plate and the first right cover plate one by one or at the same time according to the needs to inspect the pump pipe, and the avoidance opening can prevent the inspection platform from hindering the normal installation of the pump pipe.

[0036] 13. The tower crane ladder device of the present invention, the maintenance platform also includes a first locking pin and a second locking pin, the first locking pin is suitable for connecting with the first cover plate and the sliding rod, and the second locking pin is suitable for connecting with the second cover plate and the sliding rod. When the first cover plate is rotated and laid flat on the sliding rod, the first cover plate and the sliding rod can be locked by the first locking pin, and when the second cover plate is rotated and laid flat on the sliding rod, the second cover plate and the sliding rod can be locked by the second locking pin, so as to avoid the maintenance platform from jumping unsteadily due to the operation of the equipment, affecting the use of installation and maintenance, and improving the safety of the maintenance platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0038] Figure 1 A partial front view structural schematic diagram of a tower crane ladder device according to an embodiment of the present invention is shown;

[0039] Figure 2 A partial three-dimensional structural schematic diagram of a tower crane ladder device according to an embodiment of the present invention is shown;

[0040] Figure 3 A schematic diagram showing the structure of the cooperation between the maintenance platform and the sliding ladder section according to an embodiment of the present invention is shown;

[0041] Figure 4 It shows a schematic structural diagram of the sliding cooperation between the sliding ladder sections according to an embodiment of the present invention;

[0042] Figure 5 An enlarged structural schematic diagram of a first matching portion and a second matching portion of an embodiment of the present invention is shown;

[0043] Figure 6 A schematic diagram showing the structure of the safety rope and the boom in cooperation with each other according to an embodiment of the present invention is shown;

[0044] Figure 7 A schematic diagram of the structure of a maintenance platform according to an embodiment of the present invention is shown in a top view.

[0045] Description of reference numerals:

[0046] 1. Tower frame; 11. Tower body; 12. Boom; 2. Bottom ladder section; 3. Sliding ladder section; 31. Ladder body; 311. Slide groove; 312. Sliding part; 313. Second matching part; 32. Sliding pull rod; 321. Sliding guide part; 4. Vertical support part; 41. Vertical guide groove; 5. Ladder safety mechanism; 51. Safety rope; 511. First matching part; 52. Tension sensor; 6. Maintenance platform; 61. Cover plate shaft; 62. First cover plate; 621. First left cover plate; 622. First right cover plate; 623. Avoidance; 63. Second cover plate; 631. Second left cover plate; 632. Second right cover plate; 7. Pump pipe. DETAILED DESCRIPTION

[0047] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0048] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0049] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0051] like Figure 1 and Figure 2As shown, this embodiment discloses a tower crane ladder device, including a tower frame 1 and a telescopic ladder structure, wherein the tower frame 1 includes a tower body 11 and an arm frame 12 that can slide vertically relative to the tower body 11, and the telescopic ladder structure includes a bottom ladder section 2 and a plurality of sliding ladder sections 3, the bottom ladder section 2 is fixedly connected to the tower body 11, and the plurality of sliding ladder sections 3 are slidably connected in sequence, and the bottom sliding ladder section 3 is slidably connected to the bottom ladder section 2, and the top sliding ladder section 3 is connected to the arm frame 12.

[0052] The tower crane ladder device of the present embodiment adjusts the working height of the tower crane ladder device by vertically sliding the boom 12 along the tower body 11. Since the bottom ladder section 2 is fixedly connected to the tower body 11, multiple sliding ladder sections 3 are slidably connected in sequence, one of the sliding ladder sections 3 located at the end is connected to the bottom ladder section 2, and another one of the sliding ladder sections 3 located at the end is connected to the boom 12. Therefore, when the boom 12 slides along the tower body 11, it can drive the sliding ladder section 3 to slide relatively telescopically, thereby realizing the extension or shortening of the overall length of the telescopic ladder structure, and then the telescopic ladder structure can adaptively adjust the ladder length following the height of the boom 12 to meet the use requirements of different heights, and has good applicability. The telescopic ladder structure of the present embodiment is respectively connected to the boom 12 and the tower body 11 on both sides, and does not need to be stored after use, reducing extra workload.

[0053] The structure of the tower crane ladder device is described in detail below in conjunction with the accompanying drawings of the specification.

[0054] The tower 1 is used to support high-altitude hoisting operations, and its bottom is fixed on the foundation. When the arm 12 slides vertically along the tower body 11, the operating room and the hoisting mechanism can be driven to rise and fall together to achieve adjustment of different operating heights.

[0055] Optionally, the arm 12 and the tower body 11 can be driven by gears and racks to achieve linear motion of the arm 12 along the tower body 11, or the arm 12 can be driven by a linear cylinder to achieve linear motion of the arm 12 along the tower body 11. The specific selection is based on needs and is not specifically limited in this embodiment.

[0056] like Figures 1 to 3 As shown, a vertical support part 4 is fixedly connected to the tower body 11, and a vertical guide groove 41 is provided on the vertical support part 4 to facilitate sliding cooperation with the sliding ladder section 3. The vertical guide groove 41 is a groove vertically opened along the vertical support part 4, and the opening direction of the groove limits the sliding direction of the sliding ladder section 3, thereby guiding the sliding of the sliding ladder section 3.

[0057] The bottom ladder section 2 is fixedly arranged, and it plays a connecting and supporting role for the sliding ladder section 3. In this embodiment, both sides of the bottom ladder section 2 are connected and fixed to the vertical support part 4 through fixed tie rods. Specifically, the fixed tie rods and the tower body 11 can be fixed by bolts or direct welding.

[0058] like Figures 1 to 4 As shown, further, multiple sliding ladder sections 3 are slidably connected in sequence. When the multiple sliding ladder sections 3 are driven by the arm 12 to slide close to each other, the multiple sliding ladders are retracted and slid, and the overall length of the telescopic ladder structure is shortened. When the multiple sliding ladder sections 3 are driven by the arm 12 to slide away from each other, the multiple sliding ladders are extended and slid, and the overall length of the telescopic ladder structure is extended, thereby realizing adaptive adjustment of the length of the telescopic ladder structure.

[0059] Specifically, a sliding groove 311 and a sliding portion 312 are provided on the front and back sides of the sliding ladder section 3, wherein the sliding portion 312 is located at the end of the sliding groove 311, between two adjacent sliding ladder sections 3, the sliding portion 312 of one sliding ladder section 3 is slidably set in the sliding groove 311 of the other sliding ladder section 3, and the sliding portions 312 of the two sliding ladder sections 3 can abut against each other for limiting.

[0060] With the above arrangement, when the sliding ladder section 3 slides, the sliding portion 312 of one sliding ladder section 3 slides along the sliding groove 311 of its adjacent sliding ladder section 3, and the sliding cooperation between the sliding portion 312 and the sliding groove 311 ensures the accuracy of the sliding path. At the end of sliding, under the deadweight of the sliding ladder section 3, the sliding portions 312 of two adjacent sliding ladder sections 3 abut against each other for limiting, thereby achieving limiting support of the lower sliding ladder section 3 on its adjacent upper sliding ladder section 3, ensuring the stability of the entire telescopic ladder structure.

[0061] It should be noted here that the front side of the sliding ladder segment 3 is the side close to the tower body 11 , and the back side of the sliding ladder segment 3 is the side away from the tower body 11 .

[0062] Specifically, the slide groove 311 is opened along the length direction of the sliding ladder section 3 and is a through groove that penetrates the sliding ladder section 3. The sliding part 312 is a pulley. The pulley of one sliding ladder section 3 is embedded and slidably arranged in the slide groove 311 of the adjacent sliding ladder section 3.

[0063] It can be understood that the length of the slide groove 311 limits the maximum sliding distance of the sliding ladder section 3, and then limits the maximum telescopic length of the telescopic ladder structure. Since the telescopic ladder structure adaptively telescopes following the vertical sliding of the arm 12, the length setting of the slide groove 311 can be designed according to the vertical sliding distance of the arm 12.

[0064] In terms of the number of settings, in the present embodiment, two groups of slide grooves 311 and sliding parts 312 are respectively provided at the lower end of the front side and the upper end of the back side of the sliding ladder section 3. The two groups of slide grooves 311 and sliding parts 312 are distributed along both sides of the width of the sliding ladder section 3, that is, adjacent sliding ladder sections 3 are slidably matched through the upper and lower groups of slide grooves 311 and sliding parts 312, thereby forming sliding supports on the opposite sides of the sliding ladder section 3, which has better stability.

[0065] Furthermore, the sliding ladder section 3 is slidably connected to the vertical support section 4. When the arm 12 drives the sliding ladder section 3 to slide, the sliding ladder section 3 can slide along the vertical support section 4, so that the sliding ladder section 3 is slidably supported by the vertical support section 4, thereby improving the sliding stability and dispersing the force of the sliding ladder section 3.

[0066] Specifically, the sliding ladder section 3 includes a ladder body 31 and a sliding rod 32 connected to each other, wherein a sliding guide portion 321 is provided at the end of the sliding rod 32, and the sliding guide portion 321 is slidably provided in the vertical guide groove 41 of the vertical support portion 4. When the sliding ladder section 3 slides, the sliding guide portion 321 at the end of the sliding rod 32 is driven to slide along the vertical guide groove 41, thereby guiding the sliding of the sliding ladder section 3 and improving its sliding accuracy.

[0067] Furthermore, the sliding guide portion 321 is a guide wheel, and the guide wheel is hinged to the end of the sliding rod 32. The sliding of the guide wheel along the vertical guide groove 41 realizes the sliding guidance of the sliding ladder section 3, and the guide wheel is hinged to the end of the sliding rod 32, which can prevent the guide wheel from getting stuck in the vertical guide groove 41 when the sliding ladder section 3 slides and drives the sliding rod 32 to be deflected by an angle, thereby ensuring smooth sliding between the guide wheel and the vertical guide groove 41, thereby ensuring normal sliding of the sliding ladder section 3.

[0068] It should be noted that when the sliding rod 32 is subjected to force and angular deflection, the end of the sliding rod 32 is driven to adaptively rotate relative to the guide wheel, so that the torsional force of the sliding rod 32 cannot be transmitted to the guide wheel, thereby preventing the guide wheel from being stuck in the vertical guide groove 41 due to the torsional force.

[0069] It can be understood that the ladder body 31 is provided with a slide groove 311 and a sliding part 312, and the plurality of sliding ladder sections 3 are slidably connected by the sliding cooperation of the slide groove 311 and the sliding part 312 on the ladder body 31. The sliding rod 32 is an arc-shaped rod, which is arranged along both sides of the ladder body 31, and a plurality of sliding rods 32 are arranged at intervals along the length direction of the ladder body 31 on both sides of the ladder body 31 to stably support both sides of the ladder body 31, and the guide wheel is arranged at one end of the sliding rod 32 away from the ladder body 31.

[0070] In the present embodiment, one of the sliding ladder sections 3 located at the end (i.e., the sliding ladder section 3 located at the lowest end in the figure) is slidingly connected to the bottom ladder section 2. Specifically, a sliding groove 311 and a sliding portion 312 can be provided on the bottom ladder section 2. The sliding portion 312 of the bottom ladder section 2 slides in the sliding groove 311 of the sliding ladder section 3, and the sliding portion 312 of the sliding ladder section 3 slides in the sliding groove 311 on the bottom ladder section 2. Moreover, the sliding portion 312 of the sliding ladder section 3 and the sliding portion 312 of the bottom ladder section 2 can abut against each other to limit the sliding portion 312 from falling out of the sliding groove 311.

[0071] The telescopic ladder structure also includes a suspension rod (not shown in the figure), which is connected to the other sliding ladder section 3 and the arm 12 at the end. In this arrangement, the sliding ladder section 3 transfers force to the arm 12 through the suspension rod, and the arm 12 is supported by force, which has good stability.

[0072] In this embodiment, the suspension rod is fixedly connected to another sliding ladder section 3 located at the end (ie, the sliding ladder section 3 located at the uppermost end in the figure), and the suspension rod is connected to the ladder suspension point on the boom 12 .

[0073] It can be understood that, in this embodiment, the sliding ladder section 3 and the bottom ladder section 2 are both provided with a plurality of ladders spaced apart along the length direction, and the user can climb to the operating room on the boom 12 or climb to the maintenance platform 6 via the plurality of ladders.

[0074] like Figure 1 , Figure 2 , Figure 5 and Figure 6 As shown, the tower crane ladder device of this embodiment also includes a ladder safety mechanism 5, which is connected to the arm 12. The ladder safety mechanism 5 can cooperate with the sliding ladder section 3 to support the sliding ladder section 3 when the sliding ladder section 3 is loose, thereby preventing the sliding ladder section 3 from falling and causing safety accidents, thereby improving safety of use.

[0075] In this embodiment, the ladder safety mechanism 5 includes a safety rope 51, which is connected to the arm 12. The safety rope 51 is provided with a first matching portion 511, and the sliding ladder section 3 is provided with a second matching portion 313 matching with the first matching portion 511. The second matching portion 313 is slidably sleeved on the safety rope 51 and is located above the first matching portion 511. When the sliding ladder section 3 is loosened and falls, the second matching portion 313 is driven to slide along the safety rope 51, and the first matching portion 511 provided below the second matching portion 313 can match with the sliding second matching portion 313, so as to support the loose sliding ladder section 3 and transmit the force to the arm 12, thereby playing a safety insurance role.

[0076] Specifically, the first matching portion 511 can be fixed to the safety rope 51 by a fixing member such as a bayonet or a screw, and the second matching portion 313 is fixedly connected to the ladder body 31 by a connecting rod.

[0077] It can be understood that since the safety rope 51 and the sliding ladder section 3 are both connected to the arm 12, the arm 12 can drive the two to slide synchronously, so that the relative position between the safety rope 51 and the sliding ladder section 3 remains unchanged, that is, the relative position of the first matching part 511 and the second matching part 313 remains unchanged, and there is always a certain interval between the two to ensure that the sliding ladder section 3 can slide normally to adjust the length of the telescopic ladder structure.

[0078] Optionally, one of the first matching portion 511 and the second matching portion 313 may be a cone seat, and the other may be a cone, which can be snapped into the cone seat. With this arrangement, the cone and the cone seat can achieve stable matching of the first matching portion 511 and the second matching portion 313 through the taper matching of the conical structure, and good reliability. In terms of specific shape, the cone seat is a conical shell, and the conical shell has a conical cavity, and the cone is a conical column, which can be snapped into the conical cavity, and the tapers of the conical column and the conical shell match.

[0079] The top of the safety rope 51 is locked on the longitudinal rod of the arm 12 by a clamp. The ladder safety mechanism 5 also includes a tension sensor 52, which is arranged on the safety rope 51 and is suitable for triggering an alarm. In this arrangement, the sliding ladder section 3 is loosened and slides down, driving the first matching part 511 and the second matching part to match. At this time, the safety rope 51 supports the sliding ladder section 3 with force, thereby triggering the tension sensor 52. The tension sensor determines that the sliding ladder section 3 is loose and triggers the alarm, which then reminds the user to take corresponding measures in time.

[0080] Specifically, the tension sensor 52 and the alarm are both connected to the controller, and the tension sensor 52 transmits the force signal of the safety rope 51 to the controller, and the controller outputs a signal to control the alarm to start. For example, the alarm can be a sound alarm or a color indicator light, which can be set according to needs, and this embodiment does not make specific restrictions.

[0081] like Figure 3 and Figure 7 As shown, as a preferred technical solution of this embodiment, the tower crane ladder device also includes a maintenance platform 6, which is arranged between the sliding ladder section 3 and the tower body 11, so that users can go up to the maintenance platform 6 to inspect the sliding ladder section 3 and the tower body 11.

[0082] Specifically, the maintenance platform 6 includes a cover plate shaft 61, a first cover plate 62 and a second cover plate 63, wherein the cover plate shaft 61 is arranged on the sliding rod 32, the first cover plate 62 and the second cover plate 63 can be rotatably connected to both sides of the cover plate shaft 61, and the first cover plate 62 is located on one side of the tower body 11, and the second cover plate 63 is located on one side of the ladder body 31.

[0083] With the above arrangement, when only the ladder body 31 needs to be inspected, only the second cover plate 63 can be opened to lay it flat on the sliding rod 32, and the first cover plate 62 on one side of the tower body 11 can be rotated and folded to make way for a passage; when only one side of the tower body 11 needs to be inspected, only the first cover plate 62 can be opened to lay it flat on the sliding rod 32, and the second cover plate 63 on one side of the ladder body 31 can be rotated and folded to form a ladder passage for users to go up and down. Therefore, the first cover plate 62 and the second cover plate 63 of this embodiment can be used one by one or at the same time according to the inspection needs. When one of them is used, the inspection platform 6 forms a half-channel and half-platform form, and when they are used at the same time, the inspection platform 6 forms a full platform form, which has strong applicability.

[0084] Specifically, the tower crane ladder device also includes a pump pipe 7 arranged along the tower body 11, and the pump pipe 7 is used to pump materials such as concrete or mud and sand to achieve high-altitude pouring operations.

[0085] The first cover plate 62 includes a first left cover plate 621 and a first right cover plate 622, wherein a relief opening 623 is provided between the first left cover plate 621 and the first right cover plate 622, and the pump tube 7 is provided through the relief opening 623. The first cover plate 62 is configured as the structure of the first left cover plate 621 and the first right cover plate 622, and the user can open the first left cover plate 621 and the first right cover plate 622 at the same time or at the same time as needed to inspect the pump tube 7, and the relief opening 623 can prevent the inspection platform 6 from obstructing the normal installation of the pump tube 7.

[0086] Correspondingly, the second cover plate 63 includes a second left cover plate 631 and a second right cover plate 632, wherein the second left cover plate 631 and the second right cover plate 632 are both rotatably connected to the cover plate shaft 61 and there is a gap between the second left cover plate 631 and the second right cover plate 632. The second cover plate 63 is configured as a second left cover plate 631 and a second right cover plate 632 structure, and the user can open the second left cover plate 631 and the second right cover plate 632 for use either or both as needed. When using either, the sliding ladder section 3 can be inspected and repaired while part of the ladder passage can be left open for the user to go up and down. When using both, a platform is formed that can only inspect the sliding ladder section 3.

[0087] Furthermore, the inspection platform 6 further includes a first locking pin and a second locking pin, wherein the first locking pin is suitable for connecting with the first cover plate 62 and the sliding rod 32, and the second locking pin is suitable for connecting with the second cover plate 63 and the sliding rod 32. When the first cover plate 62 is rotated and laid flat on the sliding rod 32, the first cover plate 62 and the sliding rod 32 can be locked by the first locking pin, and when the second cover plate 63 is rotated and laid flat on the sliding rod 32, the second cover plate 63 and the sliding rod 32 can be locked by the second locking pin, thereby preventing the inspection platform 6 from jumping unsteadily due to the operation of the equipment, affecting the use of installation and inspection, and improving the safety of the inspection platform 6.

[0088] To facilitate understanding of the telescopic ladder structure of this embodiment, the installation process is now introduced as follows:

[0089] Assemble multiple sliding ladder sections 3 according to the shortest folded length, assemble the safety rope 51 and the tension sensor 52 simultaneously, and then lock the folded state of the assembled multiple sliding ladder sections 3 to avoid danger caused by the extension of the sliding ladder sections 3 due to gravity during the hoisting process;

[0090] The plurality of sliding ladder sections 3 are vertically hoisted onto the bottom ladder section 2 by means of a hoisting machine, and then the sliding ladder section 3 at the bottom is connected to the bottom ladder section 2;

[0091] Release the folded state of the multiple sliding ladder sections 3, and the uppermost sliding ladder section 3 is hoisted by the hoisting machine. The hoisting machine lifts the sliding ladder section 3 upward to gradually extend it. After it is extended to the required length, the uppermost sliding ladder section 3 is connected to the ladder hanging point on the boom 12 through the hanging rod;

[0092] The safety rope 51 is passed through the second matching portion 313 on the sliding ladder section 3 , and the first matching portion 511 is fixed to the safety rope 51 below the second matching portion 313 , and then the top of the safety rope 51 is connected to the arm 12 .

[0093] When the tower crane ladder device of this embodiment is in use: the arm 12 moves vertically upward along the tower body 11, driving the multiple sliding ladder sections 3 to slide and extend away from each other, so as to increase the total height of the telescopic ladder structure; the arm 12 moves vertically downward along the tower body 11, driving the multiple sliding ladder sections 3 to slide and contract toward each other, so as to reduce the total height of the telescopic ladder structure.

[0094] This embodiment also discloses a method for installing a tower crane ladder device, including the following steps: assembling a plurality of sliding ladder sections 3 according to the shortest length of folding and locking the assembled plurality of sliding ladder sections 3; vertically hoisting the locked plurality of sliding ladder sections 3 to the installation position; connecting the bottom sliding ladder section 3 to the bottom ladder section 2, and connecting the top sliding ladder section 3 to the boom 12. Since the installation method of the tower crane ladder device of this embodiment has the same technical effect as the tower crane ladder device, this embodiment will not be repeated.

[0095] Furthermore, the steps of connecting the bottom sliding ladder section 3 with the bottom ladder section 2 and the top sliding ladder section 3 with the arm 12 include: connecting the bottom sliding ladder section 3 with the bottom ladder section 2, slidingly installing the sliding pull rod 32 of the sliding ladder section 3 on the vertical guide groove 41, unlocking the folded state of multiple sliding ladder sections 3, hanging the top sliding ladder and lifting it upwards, and after the multiple sliding ladder sections 3 are extended to the required length, connecting the top sliding ladder section 3 with the suspension rod of the arm 12.

[0096] The installation method also includes: slidingly sleeve one end of the safety rope 51 on the sliding ladder section 3, and making the first matching part 511 of the safety rope 51 match the second matching part of the sliding ladder section 3, locking the other end of the safety rope 51 with the arm 12 and installing the tension sensor 52. The synchronous installation of the safety rope 51 improves the safety of the telescopic ladder structure, and the tension sensor can send an alarm when the telescopic ladder structure falls, so as to remind the user to repair it in time.

[0097] Specifically, during the assembly of the plurality of sliding ladder segments 3, the safety rope 51 is installed synchronously, and then the plurality of sliding ladder segments 3 are locked in the collapsed state, so as to avoid the danger of hoisting caused by the extension of the ladder due to gravity during the hoisting process.

[0098] The tower crane main hook and the pump pipe 7 are used to assist in lifting multiple sliding ladder sections 3. The sliding ladder sections 3 are vertically installed on the lowest bottom ladder section 2. The sliding pull rod 32 of the sliding ladder section 3 is slidably installed in the vertical guide groove 41. The lock of the collapsed state of the multiple sliding ladder sections 3 is unlocked. The pump pipe 7 is used to assist in lifting the lifting point of the top sliding ladder section 3. The pump pipe 7 assists in lifting the lifting edge upwards. The multiple sliding ladder sections 3 are gradually extended. After extending to the required length, they are connected to the ladder hanging points on the boom 12 with bolts. The tension sensor 52 is installed simultaneously, and the safety rope 51 is locked to the boom 12.

[0099] Of course, the above descriptions are all the best technical solutions for this embodiment. In addition:

[0100] In some embodiments, the sliding groove 311 can also be set as a blind groove, and the sliding part 312 is slidably set in the blind groove, which can also realize the sliding connection between the sliding ladder sections 3.

[0101] In some embodiments, one of the sliding ladder sections 3 located at the end (i.e., the sliding ladder section 3 located at the lowest end in the figure) can also be fixedly connected to the bottom ladder section 2. At this time, the bottom ladder section 2 only supports the sliding ladder section 3, and the length adjustment is achieved by relying on the mutual sliding between multiple sliding ladder sections 3.

[0102] In some embodiments, another sliding ladder segment 3 located at the end (ie, the sliding ladder segment 3 located at the uppermost end in the figure) may also be slidably connected to the suspension rod, and in this case, the suspension rod slidably supports the sliding ladder segment 3 .

[0103] In some embodiments, the first matching portion 511 can also be slidably mounted on the sliding ladder section 3, and the first matching portion 511 is located below the second matching portion 313, so that when the sliding ladder section 3 is loosened, it slides along the safety rope 51 so that the second matching portion 313 can match with the first matching portion 511, and the sliding ladder section 3 can also be supported.

[0104] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A tower crane ladder device, characterized in that: include: A tower (1) comprising a tower body (11) and an arm (12) capable of vertically sliding relative to the tower body (11); A telescopic ladder structure, comprising a bottom ladder section (2) and a plurality of sliding ladder sections (3), wherein the bottom ladder section (2) is fixedly connected to the tower body (11), and the plurality of sliding ladder sections (3) are slidably connected in sequence, and the bottom sliding ladder section (3) is connected to the bottom ladder section (2), and the top sliding ladder section (3) is connected to the arm frame (12); The arm (12) moves vertically upward along the tower body (11), driving the plurality of sliding ladder sections (3) to slide and extend away from each other, so as to increase the total height of the telescopic ladder structure; The arm (12) moves vertically downward along the tower body (11), driving the plurality of sliding ladder sections (3) to slide and contract toward each other, thereby reducing the total height of the telescopic ladder structure; When the arm (12) slides vertically along the tower body (11), the operating room can be driven to rise and fall together, thereby achieving adjustment of different working heights; the sliding ladder section (3) and the bottom ladder section (2) are both provided with a plurality of ladders at intervals along the length direction, and a user can climb to the operating room on the arm (12) via the plurality of ladders.

2. The tower crane ladder device according to claim 1, characterized in that: The front and back sides of the sliding ladder section (3) are both provided with a sliding groove (311) and a sliding portion (312); the sliding portion (312) is located at the end of the sliding groove (311), between two adjacent sliding ladder sections (3); the sliding portion (312) of one sliding ladder section (3) is slidably arranged in the sliding groove (311) of the other sliding ladder section (3), and the sliding portions (312) of the two sliding ladder sections (3) can abut against each other for limiting position.

3. The tower crane ladder device according to claim 1, characterized in that: A vertical support portion (4) is fixedly connected to the tower body (11), and the sliding ladder section (3) is slidably connected to the vertical support portion (4).

4. The tower crane ladder device according to claim 3, characterized in that: The vertical support portion (4) is provided with a vertical guide groove (41), the sliding ladder section (3) comprises a ladder body (31) and a sliding pull rod (32) connected to each other, the end of the sliding pull rod (32) is provided with a sliding guide portion (321), and the sliding guide portion (321) is slidably arranged in the vertical guide groove (41).

5. The tower crane ladder device according to claim 4, characterized in that: The sliding guide portion (321) is a guide wheel, and the guide wheel is hinged to the end of the sliding pull rod (32).

6. The tower crane ladder device according to any one of claims 1 to 5, characterized in that: The telescopic ladder structure also includes a suspension rod, which is connected to both the arm (12) and the sliding ladder section (3) located at the top.

7. The tower crane ladder device according to any one of claims 1 to 5, characterized in that: It also comprises a ladder safety mechanism (5), the ladder safety mechanism (5) being connected to the arm frame (12), and the ladder safety mechanism (5) being capable of cooperating with the sliding ladder section (3) to support the sliding ladder section (3) when the sliding ladder section (3) is loose.

8. The tower crane ladder device according to claim 7, characterized in that: The ladder safety mechanism (5) comprises a safety rope (51), the safety rope (51) being connected to the arm frame (12), the safety rope (51) being provided with a first matching portion (511), the sliding ladder section (3) being provided with a second matching portion (313) matching with the first matching portion (511), the second matching portion (313) being slidably sleeved on the safety rope (51) and being located above the first matching portion (511), or the first matching portion (511) being slidably sleeved on the sliding ladder section (3) and being located below the second matching portion (313).

9. The tower crane ladder device according to claim 8, characterized in that: One of the first matching portion (511) and the second matching portion (313) is a cone clamping seat, and the other is a cone clamping seat, and the cone clamping seat can be clamped in the cone clamping seat.

10. The tower crane ladder device according to claim 8, characterized in that: The ladder safety mechanism (5) further comprises a tension sensor (52), wherein the tension sensor (52) is arranged on the safety rope (51) and is suitable for triggering an alarm.

11. The tower crane ladder device according to claim 4 or 5, characterized in that: It also comprises an inspection platform (6), wherein the inspection platform (6) is arranged between the sliding ladder section (3) and the tower body (11).

12. The tower crane ladder device according to claim 11, characterized in that: The maintenance platform (6) comprises a cover plate shaft (61), a first cover plate (62) and a second cover plate (63); the cover plate shaft (61) is arranged on the sliding rod (32); the first cover plate (62) and the second cover plate (63) are rotatably connected to two sides of the cover plate shaft (61); the first cover plate (62) is located on one side of the tower body (11) and the second cover plate (63) is located on one side of the ladder body (31).

13. The tower crane ladder device according to claim 12, characterized in that: The tower crane ladder device further comprises a pump pipe (7) arranged along the tower body (11); the first cover plate (62) comprises a first left cover plate (621) and a first right cover plate (622); a relief opening (623) is arranged between the first left cover plate (621) and the first right cover plate (622); and the pump pipe (7) is arranged to pass through the relief opening (623).

14. The tower crane ladder device according to claim 12, characterized in that: The second cover plate (63) comprises a second left cover plate (631) and a second right cover plate (632); the second left cover plate (631) and the second right cover plate (632) are both rotatably connected to the cover plate shaft (61), and there is a gap between the second left cover plate (631) and the second right cover plate (632).

15. The tower crane ladder device according to claim 12, characterized in that: The maintenance platform (6) further comprises: A first locking pin, adapted to be connected to the first cover plate (62) and the sliding rod (32); The second locking pin is suitable for connecting with the second cover plate (63) and the sliding rod (32).

16. A method for installing a tower crane ladder device according to any one of claims 1 to 15, characterized in that: The following steps are involved: The plurality of sliding ladder sections (3) are assembled according to the shortest folded length and the assembled plurality of sliding ladder sections (3) are locked; Vertically hoisting the locked plurality of sliding ladder sections (3) to an installation position; The sliding ladder section (3) at the bottom is connected to the bottom ladder section (2), and the sliding ladder section (3) at the top is connected to the arm frame (12).

17. The method for installing a tower crane ladder device according to claim 16, characterized in that: The steps of connecting the bottom sliding ladder section (3) to the bottom ladder section (2) and the top sliding ladder section (3) to the arm frame (12) include: The bottom sliding ladder section (3) is connected to the bottom ladder section (2), the sliding pull rod (32) of the sliding ladder section (3) is slidably installed in the vertical guide groove (41), the lock of the folded state of the plurality of sliding ladder sections (3) is unlocked, the sliding ladder at the top is suspended and lifted upward, and after the plurality of sliding ladder sections (3) are extended to a desired length, the top sliding ladder section (3) is connected to the suspension rod of the arm (12).

18. The method for installing a tower crane ladder device according to claim 16, characterized in that: Also includes: One end of the safety rope (51) is slidably sleeved on the sliding ladder section (3), and the first matching portion (511) of the safety rope (51) is matched with the second matching portion (313) of the sliding ladder section (3); the other end of the safety rope (51) is locked with the arm frame (12) and the tension sensor (52) is installed.

Images