Unidirectional bending jacking chain device

Abstract

The utility model provides a one-way bending jacking chain device, and belongs to the field of stage mechanical equipment. The device comprises a jacking chain set, a pin gear box and a storage box, the pin gear box and the storage box are connected through two symmetrically-arranged connecting plates, the jacking chain set comprises a first jacking chain link and a plurality of continuous jacking chain links, and the first jacking chain link and the continuous jacking chain links are sequentially connected in series. The jacking chain set penetrates into the pin gear box from the storage box and then penetrates out of the pin gear box in the vertical direction, and the pin gear box drives the middle of the jacking chain set to move so that the upper portion of the jacking chain set can descend or ascend in the vertical direction. The stage jacking mechanism is simple and compact in structure, reasonable and reliable in transmission, high in transmission precision, large in transmission load, high in efficiency, convenient to assemble and maintain, low in production cost, attractive in appearance and capable of being widely applied to stage jacking mechanical equipment.

Description

Technical Field

[0001] The utility model belongs to the field of stage mechanical equipment, and particularly relates to a one-way bending lifting chain device. Background Art

[0002] The lifting equipment in stage machinery is an indispensable part of the stage. They undertake important tasks such as lifting and lowering the stage, scenery, props and actors. With the development of science and technology, stage lifting equipment is also undergoing innovation and improvement. Traditional stage lifting equipment mostly uses hydraulic cylinders. After the hydraulic rod is raised and lowered to a certain height, the height of the stage is maintained only by the hydraulic rod, and the stability needs to be improved; moreover, the weight of the stage itself and the performers on the stage, as well as the activities of the performers, react to the hydraulic rod, which is easy to cause increased wear inside the hydraulic cylinder, further affecting the maintenance effect of the stage; in addition, the hydraulic cylinder itself is high, and its use is subject to certain restrictions when the space for installing the stage lifting equipment is limited. Summary of the invention

[0003] The utility model aims at the problems existing in the prior art in the above-mentioned background technology and provides a one-way bending lifting chain device, which has high transmission accuracy, large load, high efficiency and high structural stability.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0005] A one-way bending jacking chain device comprises a jacking chain group, a pin gear box, and a storage box. The pin gear box is connected to the storage box by two symmetrically arranged connecting plates. The jacking chain group comprises a first jacking chain link and a plurality of renewable jacking chain links. The first jacking chain link and the plurality of renewable jacking chain links are sequentially connected in series. The jacking chain group passes through the pin gear box from the storage box and then passes through the pin gear box in the vertical direction. The pin gear box drives the middle part of the jacking chain group to move so that the upper part of the jacking chain group descends or rises in the vertical direction.

[0006] Furthermore, the lifting first link includes a top connecting piece and a top link plate. The top connecting piece is connected to the upper part of the top link plate through a top connecting shaft. The four top link plates arranged side by side are fixedly connected through three top long axes arranged in a triangular position. Top guide bearings are installed at both ends of the top long axis located at the bottom, and two top pins arranged side by side are also installed on the left side of the top link plate.

[0007] Preferably, a distance tube is sleeved on the top connecting shaft, and the distance tube is located between the two middle top chain link plates.

[0008] Preferably, three top middle coaxial sleeves are sleeved on the top long axis, each of which is located between adjacent top chain link plates, and two top end sleeves are also sleeved on the top long axis, and the two symmetrically installed top end sleeves are located on the outside of the first top chain link plate and the fourth top chain link plate.

[0009] Preferably, three top pin shaft sleeves are sleeved on the top pin shaft, and each top pin shaft sleeve is located between adjacent top chain link plates.

[0010] Preferably, top retaining rings are installed at both ends of each top pin sleeve, and the six top retaining rings are all sleeved on the top pin.

[0011] Preferably, the outer sides of the first top middle coaxial sleeve and the third top middle coaxial sleeve on the bottom top long axis are both sleeved with top spacers.

[0012] Furthermore, the jacking renewable chain link includes a renewable chain link plate and a transition chain link plate. The four renewable chain link plates arranged side by side are fixedly connected by three renewable long shafts arranged in a triangular position. Both ends of the two renewable long shafts located at the bottom and the top are equipped with renewable guide bearings. The upper parts of the two transition chain link plates are connected to the jacking head chain link through the bottom top long shaft or connected to the previous jacking renewable chain link through the bottom renewable long shaft of the previous jacking renewable chain link. The lower parts of the two transition chain link plates are connected to the top renewable long shaft of the current jacking renewable chain link. Connecting this jacking renewable chain link, a chain link retaining shaft is also provided between the two transition chain link plates. When adjacent jacking renewable chain links are in a vertical state, the adjacent renewable chain link plates press the chain link retaining shaft on the transition chain link plate, and the chain link retaining shaft is located in a semi-axis groove opened on the renewable chain link plate. The top chain link plate presses the chain link retaining shaft on the transition chain link plate of the second jacking renewable chain link, and the chain link retaining shaft of the second jacking renewable chain link is located in a semi-axis groove opened on the top chain link plate. Two renewable pin shafts are also installed side by side up and down on the left side of the transition chain link plate.

[0013] Preferably, three renewable middle coaxial sleeves are sleeved on the renewable long shaft, each of which is located between adjacent renewable chain link plates, and two renewable end sleeves are also sleeved on the renewable long shaft, and the two symmetrically installed renewable end sleeves are located on the outside of the first renewable chain link plate and the fourth renewable chain link plate.

[0014] Preferably, three extendable pin shaft sleeves are sleeved on the extendable pin shaft, and each extendable pin shaft sleeve is located between adjacent extendable chain link plates.

[0015] Preferably, both ends of each renewable pin shaft sleeve are installed with renewable retaining rings, and the six renewable retaining rings are all sleeved on the renewable pin shaft.

[0016] Preferably, the outer sides of the first extendable middle coaxial sleeve and the third extendable middle coaxial sleeve on the extendable long shaft are both sleeved with extendable spacer sleeves.

[0017] Furthermore, the pin gear box includes a box body and an installation shaft. The box body is formed by bolting a wall panel, a bottom protective plate, a rear protective plate, and a front protective plate. A plurality of fixed-distance shafts are arranged between the two wall panels. The installation shaft is rotatably installed between the two wall panels through a deep groove ball bearing. The driving gear is installed in the middle of the installation shaft. The driving gear is meshed with a continuous pin shaft. Pin gear spacers are arranged on both sides of the driving gear, and the pin gear spacers are arranged on the installation shaft. One end of the installation shaft extends out of the wall panel for connecting a power source, and a pin gear track containing a 90° arc is arranged on the inner side of the wall panel.

[0018] Furthermore, the storage box includes a retaining frame, a special-shaped storage frame for storing the lifting chain group is installed inside the retaining frame, a storage track matching the continuous guide bearing is arranged inside the special-shaped storage frame, and the storage track is horizontally docked with the pin tooth track.

[0019] Preferably, the overall structure of the special-shaped storage rack is a horizontal "U" shape and is made of aluminum profiles.

[0020] Compared with the prior art, the beneficial technical effects of the utility model are:

[0021] 1. The utility model has a simple and compact structure, reasonable and reliable transmission, high transmission accuracy, large transmission load, high efficiency, convenient assembly and maintenance, low production cost, beautiful appearance, and can be widely used in stage lifting machinery and equipment.

[0022] 2. Within the maximum travel range of the one-way bending jacking chain device of the utility model, the number of chain links of the jacking extendable chain links can be increased or decreased as needed, and the practicability is strong.

[0023] 3. In the utility model, four identical extendable link plates of the same jacking extendable chain link are fixedly connected by three extendable long shafts arranged in a triangular position, and each extendable long shaft sleeve has three identical extendable intermediate coaxial sleeves, so that the assembly holes and the appearance are consistent, ensuring that the overall structure of the jacking extendable chain link is stable, rigid and has a large load-bearing capacity; there are fewer types of parts and components, with high interchangeability, mass production can be achieved, and the processing cost is greatly reduced.

[0024] 4. The pin gear box in the utility model is composed of two side wall panels, a bottom protective plate, a mounting shaft, a driving gear, a fixed distance shaft, and a front protective plate and a rear protective plate, and all of them are bolted. The pin gear box has a simple and compact structure and is easy to assemble and disassemble. The wall panels are castings, which greatly avoid the internal stress and strain caused by welding compared to welded parts, and the cost is low.

[0025] 5. In the utility model, when adjacent lifting extendable links are in a vertical state, the adjacent link plates press the link retaining shafts on the transition link plates, and the link retaining shafts are in the semi-axis grooves of the extendable link plates. Compared with the existing link plates that directly squeeze each other, this utility model has a higher tolerance rate for insufficient processing precision of each component and cumulative errors, and can significantly enhance the structural stability.

[0026] 6. In the utility model, both ends of the renewable long shaft of the jacking renewable chain link are equipped with special renewable guide bearings, so that the renewable guide bearings can roll flexibly when the jacking chain group is lifted and lowered along the pin tooth track. Compared with the existing similar guide sleeves, the friction resistance is reduced and the transmission efficiency is improved.

[0027] 7. In the utility model, a carburized renewable pin sleeve is used on the renewable shaft pin of the jacking renewable chain link close to the driving gear side, which can improve the wear resistance of the renewable pin sleeve. When the driving gear and the jacking renewable chain link are meshed for transmission, the renewable pin sleeve can be replaced during maintenance of wearing parts, which is convenient and low-cost.

[0028] 8. The storage box of the utility model adopts a customized aluminum profile special-shaped storage rack, which has beautiful appearance and light weight. The one-way bending jacking chain device realizes non-welding assembly throughout the process, has few types of parts and strong interchangeability, has low requirements for assembly personnel, and can greatly save labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a front view of a one-way bending lifting chain device of the utility model;

[0030] Figure 2 It is a left view of a one-way bending lifting chain device of the utility model;

[0031] Figure 3 It is a top view of a one-way bending lifting chain device of the utility model;

[0032] Figure 4 This is a main sectional view of a one-way bending lifting chain device of the utility model;

[0033] Figure 5 yes Figure 1 The front view of the middle lifting first chain link;

[0034] Figure 6 yes Figure 5 Middle AA section view;

[0035] Figure 7 yes Figure 5 Middle BB section;

[0036] Figure 8 yes Figure 5 Mid-CC section;

[0037] Fig. 9 yes Figure 1 The front view of the middle lifting extendable chain link;

[0038] Fig.10 yes Fig. 9 Middle DD section;

[0039] Fig.11 yes Fig. 9 Middle EE section;

[0040] Fig.12 yes Fig. 9 Middle FF section;

[0041] Fig.13 yes Figure 1 Left section view of the middle pin gear box;

[0042] Fig.14 yes Fig.13 Left section view of the middle pin gear box;

[0043] Fig.15 yes Figure 1 Right side section view of the storage box.

[0044] Figure numerals: 1-lifting first link, 101-top connecting piece, 102-top connecting shaft, 103-distance tube, 104-top link plate, 105-top middle coaxial sleeve, 106-top long shaft, 107-top guide bearing, 108-top end sleeve, 109-top retaining ring, 110-top pin, 111-top pin sleeve, 112-top spacer, 2-lifting extendable link, 201-transition link plate, 202-link retaining shaft, 203-renewable spacer, 204-renewable middle coaxial sleeve, 205-renewable link plate , 206-renewable long shaft, 207-renewable guide bearing, 208-renewable end sleeve, 209-renewable pin shaft, 210-renewable retaining ring, 211-renewable pin shaft sleeve, 3-pin gear box, 301-wall panel, 302-bottom protective plate, 303-fixed distance shaft, 304-deep groove ball bearing, 305-mounting shaft, 306-pin gear spacer, 307-drive gear, 308-rear protective plate, 309-front protective plate, 310-pin gear track, 4-storage box, 401-special-shaped storage rack, 402-storage track, 403-retaining frame, 5-connecting plate. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0046] Please see attached Figure 1-15 As shown, a one-way bending jacking chain device includes a jacking chain group, a pin gear box 3, and a storage box 4. The pin gear box 3 is connected to the storage box 4 by two symmetrically arranged connecting plates 5. The jacking chain group includes a first jacking chain link 1 and a plurality of jacking renewable chain links 2. The first jacking chain link 1 and the plurality of jacking renewable chain links 2 are connected in series in sequence. The jacking chain group passes through the pin gear box 3 from the storage box 4 and then passes through the pin gear box 3 in the vertical direction. The pin gear box 3 drives the middle part of the jacking chain group to move so that the upper part of the jacking chain group descends or rises in the vertical direction.

[0047] The one-way bending lifting chain device of the utility model is suitable for use as a lifting device in stage machinery. The lifting chain group forms a rigid lifting column with large load, large stroke, high efficiency and low noise. The number of lifting extendable chain links can be increased or decreased as needed within the maximum stroke range of the one-way bending lifting chain device, and the practicability is strong; the one-way bending lifting chain device realizes non-welding assembly throughout the process, has few types of parts and strong interchangeability, has low requirements on assembly personnel, and can greatly save labor costs.

[0048] Specifically, the lifting first link 1 includes a top connector 101 and a top link plate 104. The top connector 101 is connected to the upper part of the top link plate 104 through a top connecting shaft 102. The four top link plates 104 arranged side by side are fixedly connected through three top long shafts 106 arranged in a triangular position. Top guide bearings 107 are installed at both ends of the top long shaft 106 at the bottom. Two top pins 110 arranged side by side are also installed on the left side of the top link plate 104. A distance tube 103 is sleeved on the top connecting shaft 102, and the distance tube 103 is located between the two middle top link plates 104. Three top middle coaxial sleeves 105 are sleeved on the top long axis 106, each of which is located between adjacent top link plates 104. Two top end sleeves 108 are also sleeved on the top long axis 106, and the two symmetrically installed top end sleeves 108 are located outside the first top link plate 104 and the fourth top link plate 104. Three top pin sleeves 111 are sleeved on the top pin shaft 110, each of which is located between adjacent top link plates 104. Top retaining rings 109 are installed at both ends of each top pin sleeve 111, and six top retaining rings 109 are sleeved on the top pin shaft 110. Top spacer sleeves 112 are sleeved on the outsides of the first top middle coaxial sleeve 105 and the third top middle coaxial sleeve 105 on the bottom top long axis 106.

[0049] Specifically, the jacking renewable chain link 2 includes a renewable chain link plate 205 and a transition chain link plate 201. The four renewable chain link plates 205 arranged side by side are fixedly connected by three renewable long shafts 206 arranged in a triangular position. Both ends of the two renewable long shafts 206 located at the bottom and the top are installed with renewable guide bearings 207. The upper parts of the two transition chain link plates 201 are connected to the jacking head chain link 1 through the bottom top long shaft 106 or connected to the previous jacking renewable chain link 2 through the bottom renewable long shaft 206 of the previous jacking renewable chain link 2. The lower parts of the two transition chain link plates 201 are connected to the jacking head chain link 1 through the bottom top long shaft 106 or connected to the previous jacking renewable chain link 2 through the bottom renewable long shaft 206 of the previous jacking renewable chain link 2. The renewable chain link 2, a chain link retaining shaft 202 is also provided between the two transition chain link plates 201, when the adjacent jacking renewable chain link 2 is in a vertical state, the adjacent jacking renewable chain link plate 205 presses the chain link retaining shaft 202 on the transition chain link plate 201, and the chain link retaining shaft 202 is located in the semi-axis groove opened on the renewable chain link plate 205, the top chain link plate 104 presses the chain link retaining shaft 202 on the transition chain link plate 201 of the second jacking renewable chain link 2, the chain link retaining shaft 202 of the second jacking renewable chain link 2 is located in the semi-axis groove opened on the top chain link plate 104, and two renewable pin shafts 209 arranged side by side up and down are also installed on the left side of the transition chain link plate 201. The renewable long shaft 206 is sleeved with three renewable intermediate coaxial sleeves 204, each of which is located between adjacent renewable link plates 205. The renewable long shaft 206 is also sleeved with two renewable end sleeves 208, and the two symmetrically installed renewable end sleeves 208 are located outside the first renewable link plate 205 and the fourth renewable link plate 205. The renewable pin shaft 209 is sleeved with three renewable pin shaft sleeves 211, each of which is located between adjacent renewable link plates 205. Renewable retaining rings 210 are installed at both ends of each renewable pin shaft sleeve 211, and six renewable retaining rings 210 are sleeved on the renewable pin shaft 209. The outer sides of the first renewable intermediate coaxial sleeve 204 and the third renewable intermediate coaxial sleeve 204 on the renewable long shaft 206 are sleeved with renewable spacer sleeves 203.

[0050] In the utility model, four identical extendable link plates 205 of the same jacking extendable link 2 are fixedly connected by three extendable long shafts 206 arranged in a triangular position, and each extendable long shaft 206 is sleeved with three identical extendable intermediate coaxial sleeves 204, so that the assembly holes and the appearance of each jacking extendable link 2 are consistent, ensuring that the overall structure of the jacking extendable link 2 is stable, rigid and has a large load-bearing capacity; there are fewer types of parts and components, with high interchangeability, mass production can be achieved, and the processing cost is greatly reduced. Moreover, the top link plate 104, top intermediate coaxial sleeve 105, top long shaft 106, top guide bearing 107, top end sleeve 108, top retaining ring 109, top pin 110, top pin sleeve 111, and top spacer 112 on the lifting first link 1 respectively have the same specifications as the renewable link plate 205, renewable intermediate coaxial sleeve 204, renewable long shaft 206, renewable guide bearing 207, renewable end sleeve 208, renewable retaining ring 210, renewable pin 209, renewable pin sleeve 211, and renewable spacer 203 on the lifting renewable link 2.

[0051] In the utility model, when the adjacent jacking extendable chain links 2 are in a vertical state, the adjacent extendable chain link plates 205 press the chain link retaining shafts 202 on the transition chain link plates 201, and the chain link retaining shafts 202 are in the semi-axis grooves of the extendable chain link plates 205. Compared with the existing structure in which the chain link plates directly squeeze each other, the utility model has a higher fault tolerance rate and enhances the structural stability.

[0052] In the utility model, the renewable pin shaft sleeve 211 is carburized to improve the wear resistance of the renewable pin shaft sleeve 211. When the driving gear 307 is meshed with the jacking renewable chain link 2 for transmission, this wearing part can be directly replaced, which is convenient for maintenance and low in cost.

[0053] Specifically, the pin gear box 3 includes a box body and a mounting shaft 305. The box body is formed by bolting a wall panel 301, a bottom protective plate 302, a rear protective plate 308, and a front protective plate 309. A plurality of spacing shafts 303 are also arranged between the two wall panels 301. The mounting shaft 305 is rotatably installed between the two wall panels 301 through a deep groove ball bearing 304. A driving gear 307 is installed in the middle of the mounting shaft 305. The driving gear 307 is meshed with the renewable pin shaft 209. Pin gear spacers 306 are arranged on both sides of the driving gear 307, and the pin gear spacers 306 are sleeved on the mounting shaft 305. One end of the mounting shaft 305 extends out of the wall panel 301 for connecting a power source. A pin gear track 310 with a 90° arc is arranged on the inner side of the wall panel 301.

[0054] In the present invention, the wall panel 301 is a casting, and the wall panel 301, the bottom protective plate 302, the rear protective plate 308, and the front protective plate 309 are connected by bolts. Compared with welded parts, the internal stress and strain caused by welding are greatly avoided, and the cost is low.

[0055] Specifically, the storage box 4 includes a retaining frame 403, a special-shaped storage frame 401 for storing the lifting chain set is installed inside the retaining frame 403, a storage track 402 matching the continuous guide bearing 207 is arranged inside the special-shaped storage frame 401, and the storage track 402 is horizontally docked with the pin-tooth track 310. Preferably, the overall structure of the special-shaped storage frame 401 is a horizontal "U" shape, made of aluminum profiles, beautiful in appearance and light in weight.

[0056] When the one-way bending lifting chain device of the utility model is used, the external power source is connected to the installation shaft 305 to drive the driving gear 307 in the pin gear box 3 to rotate forward and reversely, so that the lifting chain group can be lowered and raised in the pin gear box 3 along the vertical direction and stored in the storage box 4.

[0057] The above is a preferred embodiment of the utility model, which is used to explain the technical solution of the utility model. Those skilled in the art can also make conventional modifications, equivalent substitutions and improvements within the spirit and principle of the utility model. Various modifications to these embodiments will be obvious to professionals in the field, and can be implemented in other embodiments without departing from the spirit or scope of the utility model. Therefore, the utility model will not be limited to the embodiments shown herein.

Claims

1. A one-way bending lifting chain device, comprising a lifting chain set, a pin gear box, and a storage box, characterized in that: The pin gear box is connected to the storage box by two symmetrically arranged connecting plates. The lifting chain group includes a first lifting chain link and a plurality of renewable lifting chain links. The first lifting chain link and the plurality of renewable lifting chain links are connected in series in sequence. The lifting chain group passes through the pin gear box from the storage box and then passes through the pin gear box in the vertical direction. The pin gear box drives the middle part of the lifting chain group to move so that the upper part of the lifting chain group descends or rises in the vertical direction.

2. A one-way bending lifting chain device according to claim 1, characterized in that: The lifting first chain link includes a top connecting piece and a top chain link plate. The top connecting piece is connected to the upper part of the top chain link plate through a top connecting shaft. Four top chain link plates arranged side by side are fixedly connected through three top long shafts arranged in a triangular position. Top guide bearings are installed at both ends of the top long shaft located at the bottom. Two top pin shafts arranged side by side up and down are also installed on the left side of the top chain link plate. A distance tube is sleeved on the top connecting shaft, and the distance tube is located between the two middle top chain link plates. Three top middle coaxial sleeves are sleeved on the top long shaft, and each top middle coaxial sleeve is Located between adjacent top link plates, two top end sleeves are also sleeved on the top long axis, and the two symmetrically installed top end sleeves are located on the outside of the first top link plate and the fourth top link plate; three top pin sleeves are sleeved on the top pin shaft, and each top pin sleeve is located between adjacent top link plates; top retaining rings are installed at both ends of each top pin shaft sleeve, and six top retaining rings are all sleeved on the top pin shaft; the outsides of the first top middle coaxial sleeve and the third top middle coaxial sleeve on the lowest top long axis are both sleeved with top spacers.

3. A one-way bending lifting chain device according to claim 2, characterized in that: The jacking renewable chain link includes a renewable chain link plate and a transition chain link plate. Four renewable chain link plates arranged side by side are fixedly connected by three renewable long shafts arranged in a triangular position. Both ends of the two renewable long shafts located at the bottom and the top are equipped with renewable guide bearings. The upper parts of the two transition chain link plates are connected to the jacking first chain link through the bottom top long shaft or connected to the previous jacking renewable chain link through the bottom renewable long shaft of the previous jacking renewable chain link. The lower parts of the two transition chain link plates are connected to the current jacking renewable chain link through the top renewable long shaft of the current jacking renewable chain link. A chain link retaining shaft is also provided between the two transition chain link plates. When adjacent jacking renewable chain links are in a vertical state, the adjacent renewable chain link plates are pressed against the chain link retaining shafts on the transition chain link plates, and the chain link retaining shafts are in semi-shaft grooves opened on the renewable chain link plates. The top chain link plate is pressed against the transition chain link plate of the second jacking renewable chain link. The chain link retaining shaft, the chain link retaining shaft of the second lifting renewable chain link is in the semi-axis groove opened on the top chain link plate, and two renewable pin shafts are installed side by side up and down on the left side of the transition chain link plate; three renewable intermediate coaxial sleeves are sleeved on the renewable long shaft, and each renewable intermediate coaxial sleeve is located between adjacent renewable chain link plates, and two renewable end sleeves are also sleeved on the renewable long shaft, and two symmetrically installed renewable end sleeves are located on the outside of the first renewable chain link plate and the fourth renewable chain link plate; three renewable pin shaft sleeves are sleeved on the renewable pin shaft, and each renewable pin shaft sleeve is located between adjacent renewable chain link plates; renewable retaining rings are installed at both ends of each renewable pin shaft sleeve, and six renewable retaining rings are all sleeved on the renewable pin shaft; the outsides of the first renewable intermediate coaxial sleeve and the third renewable intermediate coaxial sleeve on the renewable long shaft are both sleeved with renewable spacer sleeves.

4. A one-way bending lifting chain device according to claim 3, characterized in that: The pin gear box includes a box body and a mounting shaft. The box body is formed by bolting a wall panel, a bottom protective plate, a rear protective plate, and a front protective plate. A plurality of fixed-distance shafts are arranged between the two wall panels. The mounting shaft is rotatably installed between the two wall panels through a deep groove ball bearing. The driving gear is installed in the middle of the mounting shaft. The driving gear is meshed with a continuous pin shaft. Pin gear spacers are arranged on both sides of the driving gear, and the pin gear spacers are sleeved on the mounting shaft. One end of the mounting shaft extends out of the wall panel for connecting a power source, and a pin gear track containing a 90° arc is arranged on the inner side of the wall panel.

5. A one-way bending lifting chain device according to claim 4, characterized in that: The storage box comprises a retaining frame, a special-shaped storage frame for storing the lifting chain set is installed inside the retaining frame, a storage track matching the continuous guide bearing is arranged inside the special-shaped storage frame, and the storage track is horizontally docked with the pin tooth track.

6. A one-way bending lifting chain device according to claim 5, characterized in that: The overall structure of the special-shaped storage rack is a horizontal "U" shape and is made of aluminum profiles.

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