Stacker crane with lateral pressure type tension sensor for monitoring the load platform
Patent Information
- Application Number
- CN202522438186.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-18
- Publication Date
- 2026-10-16
- Estimated Expiration
- 2035-11-18
AI Technical Summary
滑轮和检测组件增加了不必要的成本，并且检测组件实现松绳和过载功能往往达不到要求，可能故障已发生但是行程开关不触发的情况，并且由于检测组件尾端重，每次触发行程开关报警后固定螺栓撞松，恢复原状需要人员登高校正，容易造成人员操作意外风险
本实用新型通过连接在钢丝绳上的旁压式张力传感器检测钢丝绳上的张力变化，从而实现载货台超载、松绳等功能，最终达到保护堆垛机安全运行的目的；本实用新型的旁压式张力传感器设置在载货台上，避免人员登高去维护检测件；本实用新型的载货台两侧分别设置夹抱式导轮组件和侧导轮组件，保证载货台在升降过程中保持稳定可靠；本实用新型置了对射光电传感器检测料箱是否进入载货台，然后在载货台超长、超宽、超高的方向分别布置对射光电传感器来进行检测货物是否超长、超宽、超高，保证货物进出载货台过程中不发生差错。
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Figure CN224858182U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of stacker crane technology, and in particular to a stacker crane that uses a side-pressure tension sensor to monitor the loading platform. Background Technology
[0002] Stacker cranes are the core handling equipment in modern intelligent warehousing, primarily performing functions such as outbound, inbound, sorting, and turnover. Their high efficiency, low cost, and wide application represent a future trend for continued development. In conventional stacker crane designs, the installation and operation of the wire rope requires installing pulleys on the loading platform, then passing the pulleys to the wire rope fixing block welded to the upper crossbeam. The end of the wire rope is equipped with a detection component and a corresponding limit switch to detect slack and overload. The pulleys and detection component add unnecessary costs, and the detection component often fails to meet the requirements for slack and overload detection. A malfunction may occur without the limit switch triggering. Furthermore, because the end of the detection component is heavy, each time the limit switch alarm is triggered, the fixing bolts loosen, requiring personnel to climb and readjust, which easily poses a risk of operator accidents. Utility Model Content
[0003] This application addresses the shortcomings of existing production technologies by providing a stacker crane that uses a side-pressure tension sensor to monitor changes in the loading platform. By using the side-pressure tension sensor to detect changes in the tension of the wire rope in real time, functions such as overloading of the loading platform and rope slack are achieved, ultimately ensuring the safe operation of the stacker crane.
[0004] The technical solution adopted in this utility model is as follows: A stacker crane that monitors the loading platform with a side-pressure tension sensor includes a loading platform, a lifting frame, and a lifting mechanism. The lifting frame includes a vertically arranged first column and a second column, which are arranged parallel to each other on the left and right. The lower ends of the first column and the second column are connected to a lower crossbeam, and the upper ends of the first column and the second column are connected to an upper crossbeam. The upper crossbeam and the lower crossbeam are arranged parallel to each other. The lifting mechanism includes a lifting motor fixed to the side of the first column. The two output ends of the lifting motor are respectively connected to a first winding drum and a second winding drum. A first wire rope is wound and connected to the first winding drum, and a second wire rope is wound and connected to the second winding drum. The loading platform is slidably connected to the first column and the second column on the left and right sides, respectively. A first wire rope seat is provided on the left side of the loading platform, and one end of the first wire rope is connected to the first wire rope seat through a connector. A second wire rope seat is provided on the right side of the loading platform, and one end of the second wire rope is connected to the second wire rope seat through a connector. One end of the second wire rope connected to the second wire rope seat is connected to a side-pressure tension sensor, which can detect the tension change on the wire rope.
[0005] Furthermore, the first wire rope seat and the second wire rope seat are fixed to the lower part of the loading platform. The upper part of the loading platform is provided with a left rope passage and a second rope passage hole that pass through vertically. The first rope passage hole is located directly above the first wire rope seat, and the second rope passage hole is located directly above the second wire rope seat. One end of the first wire rope passes through the first rope passage hole and is connected to the first wire rope seat. One end of the second wire rope passes through the second rope passage hole and is connected to the second wire rope seat. Nylon retaining rings are respectively provided at the upper and lower ends of the first rope passage hole and the second rope passage hole.
[0006] Furthermore, two first transition pulleys are provided on the front end face of the upper crossbeam, located on the left and right sides of the upper crossbeam respectively. The second wire rope emerges from the second winding drum, passes through the two first transition pulleys in sequence, and is connected to the right side of the loading platform. Two second transition pulleys are provided on the rear end face of the upper crossbeam, located on the left side of the upper crossbeam. The first wire rope emerges from the first winding drum, passes through the two second transition pulleys in sequence, and is connected to the left side of the loading platform.
[0007] Furthermore, first guide rails are respectively provided on the front and rear ends of the first column, and the first guide rails are set along the height direction of the first column. Second guide rails are respectively provided on the front and rear ends of the second column, and the second guide rails are set along the height direction of the second column. Clamping guide wheel assemblies are respectively provided on the upper and lower parts of the front and rear ends of the left side of the loading platform. The clamping guide wheel assemblies on the upper and lower parts of the front and rear ends of the left side of the loading platform are respectively slidably connected to the first guide rails on the front and rear ends of the first column. Side guide wheel assemblies are respectively provided on the upper and lower parts of the front and rear ends of the right side of the loading platform. The side guide wheel assemblies on the upper and lower parts of the front and rear ends of the right side of the loading platform are respectively slidably connected to the second guide rails on the front and rear ends of the second column.
[0008] Furthermore, the clamping guide wheel assembly includes a guide wheel bracket, which is detachably connected to the loading platform by bolts. A guide wheel is rotatably connected to the guide wheel bracket, and the guide wheel is slidably connected to the front of the first guide rail. Two clamping wheels are rotatably connected to the guide wheel bracket, and the two clamping wheels clamp the left and right sides of the first guide rail respectively.
[0009] Furthermore, the side guide wheel assembly includes a side guide wheel bracket, which is detachably connected to the loading platform by bolts. The side guide wheel is rotatably connected to the side guide wheel bracket, and the side guide wheel is slidably connected to the front of the second guide rail.
[0010] Furthermore, a speed limiter is installed on the lower crossbeam, and an upper pulley is installed directly above the speed limiter. The upper pulley is connected to the first column. The speed limiter and the upper pulley are connected together to a brake cable. Two safety clamp assemblies are connected to the left side of the loading platform. The two safety clamp assemblies are located at the positions of the two first guide rails respectively. The brake cable is connected to one end of the first connecting rod through a connector. The other end of the first connecting rod is connected to one end of the drive shaft. The other end of the drive shaft is connected to one end of the second connecting rod. The first connecting rod and the second connecting rod are connected to the two safety clamp assemblies respectively through a linkage rod.
[0011] Furthermore, upper limit switches are respectively installed on the upper parts of the first and second columns, and the upper limit switches are located on the upward path of the loading platform.
[0012] Furthermore, the loading platform is equipped with automatic telescopic forks, which can move the loaded goods in and out of the loading platform.
[0013] Furthermore, a front mounting bracket and a rear mounting bracket are respectively installed across the front and rear ends of the loading platform. A first pair of photoelectric sensor transmitter and receiver are respectively installed on the upper left and right sides of the front and rear mounting brackets, positioned at the same height and facing each other. A second pair of photoelectric sensor transmitter is installed on the left and right sides of the front and rear mounting brackets, with a second pair of photoelectric sensor receiver directly below each transmitter. The receivers are connected to the loading platform. A third pair of photoelectric sensor transmitters is installed on the left and right sides of the front and rear mounting brackets, with a third pair of photoelectric sensor receivers positioned diagonally opposite each transmitter. The receivers are also connected to the loading platform. A fourth pair of photoelectric sensor transmitters and receivers are installed on the left and right sides of the front and rear mounting brackets, respectively, arranged diagonally opposite each other.
[0014] The beneficial effects of this utility model are as follows: This invention uses a side-pressure tension sensor connected to a steel wire rope to detect changes in the tension of the steel wire rope, thereby enabling functions such as overloading and rope slack detection on the loading platform, ultimately protecting the safe operation of the stacker crane. The side-pressure tension sensor is positioned on the loading platform, eliminating the need for personnel to climb to maintain the sensor. Clamping guide wheel assemblies and side guide wheel assemblies are respectively installed on both sides of the loading platform to ensure stability and reliability during lifting. A through-beam photoelectric sensor detects whether the material bin has entered the loading platform, and through-beam photoelectric sensors are also arranged in the directions of excessive length, width, and height of the loading platform to detect whether the goods exceed these limits, ensuring no errors occur during the entry and exit of goods from the loading platform. Attached Figure Description
[0015] Figure 1 This is the front view of the present utility model.
[0016] Figure 2 This is a first-view perspective perspective view of the present invention.
[0017] Figure 3 This is a second-view perspective perspective view of the present invention.
[0018] Figure 4 This is a structural diagram of the clamping guide wheel assembly of this utility model.
[0019] Figure 5 This is a structural diagram of the side guide wheel assembly of this utility model.
[0020] Figure 6 This is a schematic diagram of the installation of the second wire rope and the loading platform of this utility model.
[0021] Figure 7 This is a structural diagram of the arrangement of photoelectric sensors on the loading platform of this utility model.
[0022] Figure 8 This is a structural diagram showing the layout of the emergency braking structure of this utility model.
[0023] The components include: 1. Loading platform; 2. First column; 3. Second column; 4. Upper crossbeam; 5. Lower crossbeam; 6. First guide rail; 7. Second guide rail; 8. Guide wheel bracket; 9. Guide wheel; 10. Clamping wheel; 11. Side guide wheel bracket; 12. Side guide wheel; 13. First wire rope; 14. Second wire rope; 15. Winding motor; 16. First winding drum; 17. Second winding drum; 18. First transition pulley; 19. Second transition pulley; 20. First wire rope seat; 21. Second wire rope seat; 22. Side-pressure tension sensor; 23. First rope passage hole; 24. Second rope passage hole; 25. Elevator speed limiter; 26. Safety clamp. Components; 27. Automatic telescopic forks; 28. Front mounting bracket; 29. Rear mounting bracket; 30. First through-beam photoelectric sensor transmitter; 31. First through-beam photoelectric sensor receiver; 32. Second through-beam photoelectric sensor transmitter; 33. Second through-beam photoelectric sensor receiver; 34. Third through-beam photoelectric sensor transmitter; 35. Third through-beam photoelectric sensor receiver; 36. Fourth through-beam photoelectric sensor transmitter; 37. Fourth through-beam photoelectric sensor receiver; 38. Brake wire rope; 39. Upper pulley; 40. First connecting rod; 41. Drive shaft; 42. Second connecting rod; 43. Linkage rod; 44. Upper limit switch. Detailed Implementation
[0024] The specific embodiments of this utility model are described below with reference to the accompanying drawings.
[0025] like Figure 1 , Figure 2 and Figure 3 As shown, a stacker crane that uses a side-pressure tension sensor to monitor the loading platform includes a loading platform 1, a lifting frame, and a lifting mechanism. The loading platform 1 carries goods, and the lifting mechanism can drive the loading platform to lift the goods.
[0026] like Figure 1 , Figure 2 and Figure 3As shown, the lifting frame includes a first column 2 and a second column 3 that are vertically arranged. The first column 2 and the second column 3 are arranged parallel to each other on the left and right sides. The lower ends of the first column 2 and the second column 3 are connected to the lower crossbeam 5. The upper ends of the first column 2 and the second column 3 are connected to the upper crossbeam 4. The upper crossbeam 4 and the lower crossbeam 5 are arranged parallel to each other.
[0027] like Figure 1 , Figure 2 and Figure 3 As shown, the lifting mechanism includes a lifting motor 15 fixed to the side of the first column 2. The two output ends of the lifting motor 15 are respectively connected to the first winding drum 16 and the second winding drum 17. The first winding drum 16 is connected to the first wire rope 13, and the second winding drum 17 is connected to the second wire rope 14.
[0028] like Figure 1 , Figure 2 and Figure 3 As shown, a first wire rope seat 20 is provided on the left side of the loading platform 1, and one end of the first wire rope 13 is connected to the first wire rope seat 20 via a connector. A second wire rope seat 21 is provided on the right side of the loading platform 1, and one end of the second wire rope 14 is connected to the second wire rope seat 21 via a connector. Figure 6 As shown, the second wire rope 14 is connected to the second wire rope seat 21, and one end is connected to the side-pressure tension sensor 22. The side-pressure tension sensor 22 can detect the tension change on the wire rope.
[0029] like Figure 2 , Figure 3 and Figure 6 As shown, the first wire rope seat 20 and the second wire rope seat 21 are fixed to the lower part of the loading platform 1. To facilitate the passage of the wire rope, the upper part of the loading platform 1 is provided with a first rope passage hole 23 and a second rope passage hole 24 that pass through vertically. The first rope passage hole 23 is located directly above the first wire rope seat 20, and the second rope passage hole 24 is located directly above the second wire rope seat 21. One end of the first wire rope 13 passes through the first rope passage hole 23 and is connected to the first wire rope seat 20. One end of the second wire rope 14 passes through the second rope passage hole 24 and is connected to the second wire rope seat 21. Nylon retaining rings are respectively provided at the upper and lower ends of the first rope passage hole 23 and the second rope passage hole 24. The nylon retaining rings can reduce the wear of the wire rope.
[0030] like Figure 1 , Figure 2 and Figure 3As shown, two first transition pulleys 18 are provided on the front end face of the upper crossbeam 4, located on the left and right sides of the upper crossbeam 4 respectively. The second wire rope 14 emerges from the second winding drum 17, passes through the two first transition pulleys 18 in sequence, and is then connected to the right side of the loading platform 1. Two second transition pulleys 19 are provided on the rear end face of the upper crossbeam 4, both located on the left side of the upper crossbeam 4. The first wire rope 13 emerges from the first winding drum 16, passes through the two second transition pulleys 19 in sequence, and is then connected to the left side of the loading platform 1.
[0031] like Figure 1 , Figure 2 and Figure 3 As shown, the loading platform 1 is located between the first column 2 and the second column 3, and the left and right sides of the loading platform 1 are slidably connected to the first column 2 and the second column 3 respectively.
[0032] like Figure 1 , Figure 2 and Figure 3 As shown, first guide rails 6 are respectively provided on the front and rear end faces of the first column 2, and the first guide rails 6 are arranged along the height direction of the first column 2. Second guide rails 7 are respectively provided on the front and rear end faces of the second column 3, and the second guide rails 7 are arranged along the height direction of the second column 3.
[0033] like Figure 1 , Figure 2 and Figure 3 As shown, clamping guide wheel assemblies are respectively installed on the upper and lower parts of the left front and rear ends of the loading platform 1. These clamping guide wheel assemblies are slidably connected to the first guide rails 6 on the front and rear ends of the first column 2. Side guide wheel assemblies are respectively installed on the upper and lower parts of the right front and rear ends of the loading platform 1. These side guide wheel assemblies are slidably connected to the second guide rails 7 on the front and rear ends of the second column 3. like Figure 4 As shown, the clamping guide wheel assembly includes a guide wheel bracket 8, which is detachably connected to the loading platform 1 by bolts. A guide wheel 9 is rotatably connected to the guide wheel bracket 8, and the guide wheel 9 is slidably connected to the front of the first guide rail 6. Two clamping wheels 10 are rotatably connected to the guide wheel bracket 8, clamping the left and right sides of the first guide rail 6 respectively. In use, the clamping guide wheel assembly prevents the loading platform 1 from tilting.
[0034] like Figure 5 As shown, the side guide wheel assembly includes a side guide wheel bracket 11, which is detachably connected to the loading platform 1 by bolts. A side guide wheel 12 is rotatably connected to the side guide wheel bracket 11, and the side guide wheel 12 is slidably connected to the front of the second guide rail 7.
[0035] like Figure 1 and Figure 8As shown, a speed limiter 25 is installed on the lower crossbeam 5, and an upper pulley 39 is installed directly above the speed limiter 25, connected to the first column 2. A brake cable 38 is connected to both the speed limiter 25 and the upper pulley 39. Two safety clamp assemblies 26 are connected to the left side of the loading platform 1, located at the positions of the two first guide rails 6. One end of the brake cable 38 is connected to a first connecting rod 40 via a connector; the other end of the first connecting rod 40 is connected to one end of a drive shaft 41, and the other end of the drive shaft 41 is connected to one end of a second connecting rod 42. The first connecting rod 40 and the second connecting rod 42 are connected to the two safety clamp assemblies 26 via a linkage rod 43. When the pressure-side tension sensor 22 issues an alarm, the speed limiter 25 triggers braking, causing the brake cable 38 to move upwards. The brake cable 38, through a series of linkages, causes the safety clamp assemblies 26 to clamp the first guide rail 6, achieving emergency braking.
[0036] like Figure 1 , Figure 2 and Figure 3 As shown, the loading platform 1 is equipped with an automatic telescopic fork 27, which can carry goods and can move the carried goods in and out of the loading platform 1.
[0037] like Figure 1 , Figure 2 and Figure 3 As shown, upper limiters 44 are respectively installed on the upper part of the first column 2 and the second column 3. The upper limiters 44 are located on the upward path of the loading platform 1 and limit the upward position of the loading platform 1.
[0038] like Figure 7As shown, a front mounting bracket 28 and a rear mounting bracket 29 are respectively installed across the front and rear ends of the loading platform 1. A first through-beam photoelectric sensor transmitter 30 and a first through-beam photoelectric sensor receiver 31 are respectively installed on the upper left and right sides of the front mounting bracket 28 and the rear mounting bracket 29. The first through-beam photoelectric sensor transmitter 30 and the first through-beam photoelectric sensor receiver 31 are located at the same height and are positioned opposite each other. The first through-beam photoelectric sensor transmitter 30 and the first through-beam photoelectric sensor receiver 31 are used to detect whether the goods exceed the height limit. A second through-beam photoelectric sensor transmitter 32 is installed on the left and right sides of the front mounting bracket 28 and the rear mounting bracket 29. A second through-beam photoelectric sensor receiver 33 is positioned directly below each second through-beam photoelectric sensor transmitter 32. The second through-beam photoelectric sensor receiver 33 is connected to the loading platform 1. The second through-beam photoelectric sensor transmitter 32 and the second through-beam photoelectric sensor receiver 33 are used to detect whether the goods exceed the width limit. Third-stage photoelectric sensor transmitters 34 are respectively installed on the left and right sides of the front mounting bracket 28 and the rear mounting bracket 29. Third-stage photoelectric sensor receivers 35 are respectively installed diagonally opposite the transmitters 34, and are connected to the loading platform 1. The transmitters 34 and receivers 35 are used to detect whether the goods exceed the allowed length. Fourth-stage photoelectric sensor transmitters 36 are respectively installed on the left and right sides of the front mounting bracket 28, and fourth-stage photoelectric sensor receivers 37 are respectively installed on the left and right sides of the rear mounting bracket 29, arranged diagonally opposite each other. The transmitters 36 and receivers 37 are used to detect whether there is material on the loading platform.
[0039] This utility model is equipped with a through-beam photoelectric sensor to detect whether the material box enters the loading platform 1. Then, through-beam photoelectric sensors are arranged in the directions of excessive length, excessive width, and excessive height of the loading platform 1 to detect whether the goods are excessive in length, excessive in width, and excessive in height, so as to ensure that no errors occur during the process of goods entering and leaving the loading platform 1.
[0040] During the loading and unloading process, the loading platform 1 of this invention experiences weight changes, which in turn cause changes in the tension of the wire rope. These changes in wire rope tension alter the transmission parameters, which are then fed back to the electrical logic. The electrical logic, through a predetermined software program, assesses the internal condition of the loading platform, achieving real-time monitoring. Simultaneously, multiple pairs of photoelectric sensors monitor the movement of goods in and out of the loading platform 1 to prevent errors.
[0041] The working principle of this utility model is as follows: During the loading and unloading process of the loading platform 1, when the side-pressure tension sensor 22 detects an overload in the wire rope, it will send feedback to the control system. The control system will then control the lifting motor 15 to stop operating. Under safe conditions, the forks can be manually controlled to remove the problematic goods. When the wire rope becomes slack, the side-pressure tension sensor 22 will send feedback to the control system. The control system will then control the speed limiter 25 to trigger braking. This braking wire rope 38 will drive the safety clamp assembly 26 to clamp the first guide rail 6, achieving emergency braking.
[0042] The above description is an explanation of the present utility model and not a limitation thereof. The scope of the present utility model is defined by the claims. Within the protection scope of the present utility model, any form of modification may be made.
Claims
1. A stacker crane that monitors the loading platform using a side-pressure tension sensor, comprising a loading platform (1), a lifting frame, and a lifting mechanism, characterized in that: The lifting frame includes a first column (2) and a second column (3) set vertically. The first column (2) and the second column (3) are set parallel to each other on the left and right sides. The lower ends of the first column (2) and the second column (3) are connected to the lower crossbeam (5). The upper ends of the first column (2) and the second column (3) are connected to the upper crossbeam (4). The upper crossbeam (4) and the lower crossbeam (5) are set parallel to each other. The lifting mechanism includes a lifting motor (15) fixed to the side of the first column (2). The two output ends of the lifting motor (15) are respectively connected to the first winding drum (16) and the second winding drum (17). The first winding drum (16) is connected to the first wire rope (13) and the second winding drum (17) is connected to the second wire rope (14). The loading platform (1) is slidably connected to the first column (2) and the second column (3) on the left and right sides respectively. A first wire rope seat (20) is set on the left side of the loading platform (1). One end of the first wire rope (13) is connected to the first wire rope seat (20) through a connector. A second wire rope seat (21) is set on the right side of the loading platform (1). One end of the second wire rope (14) is connected to the second wire rope seat (21) through a connector. One end of the second wire rope (14) connected to the second wire rope seat (21) is connected to a side-pressure tension sensor (22). The side-pressure tension sensor (22) can detect the tension change on the wire rope.
2. A stacker crane using a side-pressure tension sensor to monitor the loading platform as described in claim 1, characterized in that: The first wire rope seat (20) and the second wire rope seat (21) are fixed to the lower part of the loading platform (1). The upper part of the loading platform (1) is provided with a first rope hole (23) and a second rope hole (24) that pass through vertically. The first rope hole (23) is located directly above the first wire rope seat (20), and the second rope hole (24) is located directly above the second wire rope seat (21). One end of the first wire rope (13) passes through the first rope hole (23) and is connected to the first wire rope seat (20). One end of the second wire rope (14) passes through the second rope hole (24) and is connected to the second wire rope seat (21). Nylon retaining rings are respectively provided at the upper and lower ends of the first rope hole (23) and the second rope hole (24).
3. A stacker crane using a pressure-side tension sensor to monitor the loading platform as described in claim 2, characterized in that: Two first transition pulleys (18) are provided on the front end face of the upper crossbeam (4). The two first transition pulleys (18) are located on the left and right sides of the upper crossbeam (4) respectively. The second wire rope (14) comes out from the second winding drum (17), passes through the two first transition pulleys (18) in sequence, and is connected to the right side of the loading platform (1). Two second transition pulleys (19) are provided on the rear end face of the upper crossbeam (4). The two second transition pulleys (19) are both located on the left side of the upper crossbeam (4). The first wire rope (13) comes out from the first winding drum (16), passes through the two second transition pulleys (19) in sequence, and is connected to the left side of the loading platform (1).
4. A stacker crane using a side-pressure tension sensor to monitor the loading platform as described in claim 3, characterized in that: First guide rails (6) are respectively provided on the front and rear ends of the first column (2). The first guide rails (6) are set along the height direction of the first column (2). Second guide rails (7) are respectively provided on the front and rear ends of the second column (3). The second guide rails (7) are set along the height direction of the second column (3). Clamping guide wheel assemblies are respectively provided on the upper and lower parts of the front and rear ends of the left side of the loading platform (1). The clamping guide wheel assemblies on the upper and lower parts of the front and rear ends of the left side of the loading platform (1) are respectively slidably connected to the first guide rails (6) on the front and rear ends of the first column (2). Side guide wheel assemblies are respectively provided on the upper and lower parts of the front and rear ends of the right side of the loading platform (1). The side guide wheel assemblies on the upper and lower parts of the front and rear ends of the right side of the loading platform (1) are respectively slidably connected to the second guide rails (7) on the front and rear ends of the second column (3).
5. A stacker crane using a pressure-side tension sensor to monitor the loading platform as described in claim 4, characterized in that: The clamping guide wheel assembly includes a guide wheel bracket (8), which is detachably connected to the loading platform (1) by bolts. A guide wheel (9) is rotatably connected to the guide wheel bracket (8), and the guide wheel (9) is slidably connected to the front of the first guide rail (6). Two clamping wheels (10) are rotatably connected to the guide wheel bracket (8), and the two clamping wheels clamp the left and right sides of the first guide rail (6) respectively.
6. A stacker crane using a pressure-side tension sensor to monitor a loading platform as described in claim 5, characterized in that: The side guide wheel assembly includes a side guide wheel bracket (11), which is detachably connected to the loading platform (1) by bolts. A side guide wheel (12) is rotatably connected to the side guide wheel bracket (11), and the side guide wheel (12) is slidably connected to the front of the second guide rail (7).
7. A stacker crane using a side-pressure tension sensor to monitor the loading platform as described in claim 6, characterized in that: Speed limiter (25) is installed on the lower crossbeam (5). An upper pulley (39) is installed directly above the speed limiter (25). The upper pulley (39) is connected to the first column (2). The speed limiter (25) and the upper pulley (39) are connected together to the brake wire rope (38). Two safety clamp assemblies (26) are connected to the left side of the loading platform (1). The two safety clamp assemblies (26) are located at the positions of the two first guide rails (6). The brake wire rope (38) is connected to one end of the first connecting rod (40) through a connector. The other end of the first connecting rod (40) is connected to one end of the drive shaft (41). The other end of the drive shaft (41) is connected to one end of the second connecting rod (42). The first connecting rod (40) and the second connecting rod (42) are connected to the two safety clamp assemblies (26) through the linkage rod (43).
8. A stacker crane using a pressure-side tension sensor to monitor a loading platform as described in claim 7, characterized in that: The upper part of the first column (2) and the second column (3) are respectively provided with upper limit devices (44), and the upper limit devices (44) are located on the upward path of the loading platform (1).
9. A stacker crane using a pressure-side tension sensor to monitor a loading platform as described in claim 8, characterized in that: The loading platform (1) is equipped with an automatic telescopic fork (27), which can drive the carried goods in and out of the loading platform (1).
10. A stacker crane using a pressure-side tension sensor to monitor a loading platform as described in claim 9, characterized in that: The loading platform (1) is spanned by a front mounting bracket (28) and a rear mounting bracket (29) at its front and rear ends, respectively. A first through-beam photoelectric sensor transmitter (30) and a first through-beam photoelectric sensor receiver (31) are respectively installed on the upper left and right sides of the front mounting bracket (28) and the rear mounting bracket (29). The first through-beam photoelectric sensor transmitter (30) and the first through-beam photoelectric sensor receiver (31) are located at the same height and are positioned opposite each other. A second through-beam photoelectric sensor transmitter (32) is installed on the left and right sides of the front mounting bracket (28) and the rear mounting bracket (29), respectively. A second through-beam photoelectric sensor receiver (33) is correspondingly installed directly below each second through-beam photoelectric sensor transmitter (32). The receiver (33) is connected to the loading platform (1). The third photoelectric sensor transmitter (34) is set on the left and right sides of the front mounting bracket (28) and the rear mounting bracket (29). The third photoelectric sensor receiver (35) is set on the diagonal position of the third photoelectric sensor transmitter (34). The third photoelectric sensor receiver (35) is connected to the loading platform (1). The fourth photoelectric sensor transmitter (36) is set on the left and right sides of the front mounting bracket (28). The fourth photoelectric sensor receiver (37) is set on the left and right sides of the rear mounting bracket (29). The fourth photoelectric sensor transmitter (36) and the fourth photoelectric sensor receiver (37) are set diagonally opposite each other.