Anti-pressing device

Abstract

The utility model relates to the technical field of safety monitoring equipment, in particular to an anti-pressing device, which comprises a fixed frame, a plurality of groups of support limiting seats, at least one group of pressing limiting units and a detection piece. The driven gear is rotationally arranged in the fixing frame, one end of the transmission chain is fixed to the driven gear, and the other end of the transmission chain is connected to the lifting motor. The supporting limiting seat is fixed to a supporting leg of the truss, and the pressing limiting unit is arranged above the fixing frame and used for limiting the lifting height of the fixing frame and the driven gear driven by the transmission chain. The detection piece is arranged on one side of the fixing frame and used for monitoring whether the fixing frame shifts or not. When a displacement monitoring electric eye of the bearing frame is out of order and is pressed on materials, the lifting motor pulls the transmission chain to ascend to drive the driven gear and the fixing frame to ascend, the detection piece gives an alarm and the lifting motor stops descending operation, the alarm is fed back quickly, faults are eliminated in time to avoid loss expansion, safety is remarkably improved, and cost is saved.

Description

Technical Field

[0001] This utility model relates to the field of safety monitoring equipment technology, and in particular to pressure-resistant devices. Background Technology

[0002] In the market, truss structures are typically used for hoisting and transferring large objects. The lifting drive structure on the truss drives the load-bearing frame and its mechanical hook to move up and down to lift and transfer objects. In existing truss equipment, if the structure controlling the descent height of the load-bearing frame malfunctions during hoisting operations, the load-bearing frame will continue to descend under the drive of the lifting motor until it presses down on the material below. If the load-bearing frame pressing down on the material is not dealt with promptly, it can easily lead to malfunctions of motors and other equipment during operation, resulting in poor safety performance and potentially causing significant losses. Utility Model Content

[0003] In order to address the technical deficiencies mentioned in the background art, the purpose of this utility model is to provide an anti-pressure device.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] The anti-pressure device includes a fixed frame, several sets of support limiting seats, at least one set of downward pressure limiting units, and a detection element. At least one transmission chain and driven gear are provided at the end of the load-bearing frame for driving its lifting and lowering. The driven gear is rotatably mounted within the fixed frame. One end of the transmission chain is fixed to the driven gear, and the other end is connected to a lifting motor. The support limiting seats are fixed to the support legs of the truss. The downward pressure limiting unit is located above the fixed frame to limit the lifting height of the fixed frame and driven gear driven by the transmission chain. The detection element is located on one side of the fixed frame and is used to monitor whether the fixed frame has shifted. When the displacement monitoring photoelectric sensor of the load-bearing frame malfunctions and presses down on the material, the lifting motor pulls the transmission chain upward to drive the driven gear and fixed frame upward. The detection element alarms, and the lifting motor stops its descent.

[0006] By adopting the above technical solution, under normal operating conditions, the load-bearing frame moves up and down under the driving force of the lifting motor. The driven gear bearing is connected to the fixed frame, which is placed on the support limit seat. When the height displacement monitoring device malfunctions, the load-bearing frame will continue to descend after reaching the set height under the driving force of the lifting motor, until the load-bearing frame presses on the material. The lifting motor then exerts no tension on the load-bearing frame and continues to rotate. The lifting motor will pull the transmission chain away from the load-bearing frame to continue rising, and the transmission chain between the lifting motor and the load-bearing frame will stack. The transmission chain synchronously drives the driven gear and the fixed frame to rise. When the detection device detects a change in the position of the fixed frame, it alarms the control system. The control system then controls the lifting motor to stop descending, and the fixed frame to stop rising. This effectively prevents the load-bearing frame from crushing the material in an uncontrolled state. The feedback alarm is highly efficient, allowing for timely troubleshooting to prevent further losses, significantly improving safety and saving costs.

[0007] Furthermore, the downward limiting unit includes a limiting member and a limiting rod. The limiting rod and the supporting limiting seat are spaced apart along the length direction of the supporting leg. One end of the limiting rod is fixed to the supporting leg, and the other end of the limiting rod passes through the fixing frame and connects to the limiting member. The fixing frame is disposed between the limiting member and the supporting limiting seat, which facilitates installation and disassembly, effectively controls the rate at which the transmission chain drives the fixing frame to rise, and helps protect the equipment.

[0008] Furthermore, the limiting component includes a spring and a limiting plate. The spring is fitted onto the other end of the limiting rod. The limiting plate is disposed between the spring and the fixed frame. A baffle is provided at the other end of the limiting rod, and the spring is located between the baffle and the limiting plate. The structure is simple and the cost is low. The elastic deformation of the spring can provide a buffering force to gradually slow down the upward trend of the fixed frame. The flexible connection effectively protects the equipment.

[0009] Furthermore, the limiting plate is screwed to the fixing frame, which facilitates installation and disassembly, improves the stability of the connection between the fixing frame and the limiting plate, and prevents the limiting plate from misaligning during the lifting process.

[0010] Furthermore, the other end of the limiting rod is provided with an external thread on its circumferential side, and the baffle is configured as a hexagonal nut structure. The baffle is threadedly connected to the limiting rod, which improves the efficiency of installation and disassembly, facilitates the adjustment of the initial state of the spring, and has strong compatibility.

[0011] Furthermore, the support limiting seat includes two support plates, which are spaced apart along the width direction of the support foot, and the fixing frame passes through the two support plates. Guide members protrude from both sides of the fixing frame. A guide groove is provided along the height direction at the end of each support plate away from the support foot, and the guide members on both sides of the fixing frame are slidably disposed within the guide groove, improving the stability of the fixing frame during lifting and its overall load-bearing strength.

[0012] Furthermore, the guide member is configured as a bolt structure, with one end of the guide member threaded through the corresponding guide groove and connected to the fixing frame, making installation and disassembly more convenient.

[0013] Furthermore, the guide groove is open at the end away from the support foot for easy assembly.

[0014] Furthermore, two sets of both the support limiting seat and the downward limiting unit are provided, with both sets of downward limiting units located between the two sets of support limiting seats, thereby improving the load-bearing strength and stability of the structure. A driven gear and a transmission chain are provided between each support limiting seat and the adjacent downward limiting unit.

[0015] Furthermore, the detection element is configured as a photoelectric sensor switch structure. The anti-pressure device also includes a mounting plate. The mounting plate is disposed on the support leg and located on one side of the fixed frame. The photoelectric sensor is mounted on the mounting plate and is used to monitor whether the fixed frame has shifted. When the fixed frame moves upward, the sensor loses its sensing signal and transmits the signal to the control system. The control system then activates braking measures and issues an alarm.

[0016] In summary, the beneficial effects of this utility model are as follows:

[0017] In normal operation, the load-bearing frame moves up and down under the drive of the lifting motor. The driven gear bearing is connected to the fixed frame, which is placed on the support limit seat. When the height displacement monitoring device malfunctions, the load-bearing frame will continue to descend after reaching the set height under the drive of the lifting motor, until it presses on the material. At this point, the lifting motor exerts no tension on the load-bearing frame and continues to rotate. The lifting motor will pull the transmission chain away from the load-bearing frame to continue rising, causing the transmission chain between the lifting motor and the load-bearing frame to stack. The transmission chain synchronously drives the driven gear and the fixed frame to rise. When the detection device detects a change in the position of the fixed frame, it alarms the control system. The control system then stops the lifting motor from descending and the fixed frame from rising. This effectively prevents the load-bearing frame from crushing the material in an uncontrolled state. The feedback alarm is highly efficient, allowing for timely troubleshooting to prevent further losses, significantly improving safety and saving costs. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the installation structure of an embodiment of the anti-pressure device of this utility model.

[0019] Figure 2 This is a schematic diagram of one embodiment of the anti-pressure device of this utility model.

[0020] Explanation of the reference numerals in the figure:

[0021] 1. Anti-pressure device; 2. Fixing frame; 3. Support limit seat; 31. Support plate; 32. Guide component; 33. Guide groove; 4. Downward pressure limit unit; 41. Limit component; 411. Spring; 412. Limit plate; 413. Baffle; 42. Limit rod; 5. Mounting plate; 6. Detection component; 7. Transmission chain; 8. Driven gear; 9. Support foot. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art are within the protection scope of the present utility model.

[0023] Those skilled in the art should understand that, in the disclosure of this utility model, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this utility model.

[0024] In the description of this utility model, the use of terms such as "several" means one or more, with "multiple" meaning two or more. Terms like "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of terms like "first," "second," and "third" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, the quantity of indicated technical features, or the sequential relationship between indicated technical features.

[0025] The following is in conjunction with the appendix Figure 1-2 The embodiments of this utility model will be described in further detail below.

[0026] Anti-pressure device 1, such as Figure 1 , Figure 2 As shown, it includes a fixed frame 2, several sets of support limiting seats 3, at least one set of downward limiting units 4, and a detection element 6. At least one transmission chain 7 and driven gear 8 are provided at the end of the load-bearing frame for driving its lifting and lowering. The driven gear 8 is rotatably mounted inside the fixed frame 2. One end of the transmission chain 7 is fixed to the driven gear 8, and the other end of the transmission chain 7 is connected to the lifting motor. The support limiting seats 3 are fixed to the support legs 9 of the truss. The downward limiting units 4 are located above the fixed frame 2 to limit the lifting height of the fixed frame 2 and driven gear 8 driven by the transmission chain 7. The detection element 6 is located on one side of the fixed frame 2 and is used to monitor whether the fixed frame 2 has shifted. When the displacement monitoring photoelectric sensor of the load-bearing frame malfunctions and presses onto the material, the lifting motor pulls the transmission chain 7 upward to drive the driven gear 8 and fixed frame 2 upward. The detection element 6 alarms, and the lifting motor stops its descent. The structure of the load-bearing frame and the lifting motor is not shown in the figure.

[0027] Under normal operating conditions, the load-bearing frame moves up and down under the drive of the lifting motor. The driven gear 8 is connected to the fixed frame 2 by a bearing, and the fixed frame 2 is placed on the support limit seat 3. When the height displacement monitoring device malfunctions, the load-bearing frame will continue to descend after reaching the set height under the drive of the lifting motor, until the load-bearing frame presses on the material. At this point, the lifting motor exerts no tension on the load-bearing frame and continues to rotate. The lifting motor will pull the transmission chain 7 to the side away from the load-bearing frame to continue rising, and the transmission chain 7 between the lifting motor and the load-bearing frame will stack. The transmission chain 7 synchronously drives the driven gear 8 and the fixed frame 2 to rise. The detection element 6 detects a change in the position of the fixed frame 2 and alarms the control system. The control system then controls the lifting motor to stop descending, and the fixed frame 2 to stop rising. This effectively prevents the load-bearing frame from crushing the material in an uncontrolled state. The feedback alarm is highly efficient, allowing for timely troubleshooting to prevent further losses, significantly improving safety and saving costs.

[0028] In some embodiments, the pressure limiting unit 4 includes a limiting member 41 and a limiting rod 42. The limiting rod 42 and the support limiting seat 3 are spaced apart along the length direction of the support foot 9. One end of the limiting rod 42 is fixed to the support foot 9, and the other end of the limiting rod 42 passes through the fixing frame 2 and is connected to the limiting member 41. The fixing frame 2 is disposed between the limiting member 41 and the support limiting seat 3, which facilitates installation and disassembly and effectively controls the rate at which the transmission chain 7 drives the fixing frame 2 to rise, thus helping to protect the equipment.

[0029] In some embodiments, please refer to Figure 2The limiting component 41 includes a spring 411 and a limiting plate 412. The spring 411 is fitted onto the other end of the limiting rod 42. The limiting plate 412 is provided between the spring 411 and the fixed frame 2. A baffle 413 is provided at the other end of the limiting rod 42, and the spring 411 is located between the baffle 413 and the limiting plate 412. The structure is simple and the cost is low. The elastic deformation of the spring 411 can provide a buffering force to gradually slow down the upward trend of the fixed frame 2. The flexible connection effectively protects the equipment, prevents misjudgment, and improves the quality of control.

[0030] Preferably, the limiting plate 412 is screwed to the fixed frame 2, which makes installation and disassembly convenient, improves the stability of the connection between the fixed frame 2 and the limiting plate 412, and prevents the limiting plate 412 from being misaligned during the lifting process.

[0031] In some embodiments, the other end of the limiting rod 42 is provided with an external thread on its circumferential side, the baffle 413 is configured as a hexagonal nut structure, the baffle 413 is threadedly connected to the limiting rod 42, and the spring 411 is located between the baffle 413 and the limiting plate 412. The installation and disassembly efficiency is high, and the position of the baffle 413 can also be adjusted by turning it to adjust the initial state of the spring 411, which has strong compatibility.

[0032] In some embodiments, please refer to Figure 2 The support limiting seat 3 includes two support plates 31, which are spaced apart along the width direction of the support foot 9. The fixing frame 2 passes through the two support plates 31. Guide members 32 are protruding from both sides of the fixing frame 2. A guide groove 33 is provided along the height direction at the end of the support plate 31 away from the support foot 9. The guide members 32 on both sides of the fixing frame 2 are slidably disposed in the guide groove 33, which improves the stability of the fixing frame 2 during rise and the overall load-bearing strength.

[0033] Specifically, the guide member 32 is configured as a bolt structure, with one end of the guide member 32 threaded through the corresponding guide groove 33 and connected to the fixed frame 2, making installation and disassembly more convenient. Furthermore, the guide member 32 can be adjusted by changing the screwing depth to regulate the tightness between the fixed frame 2 and the corresponding support plate 31, improving safety and compatibility.

[0034] Preferably, the end of the guide groove 33 away from the support foot 9 is open, and the height of the open end of the guide groove 33 is higher than the height of the limiting plate 412, which facilitates assembly and improves safety performance.

[0035] In some embodiments, two sets of support limiting seats 3 and two sets of pressing limiting units 4 are provided, with the two sets of pressing limiting units 4 located between the two sets of support limiting seats 3, thereby improving the load-bearing strength and stability of the structure. A driven gear 8 and a transmission chain 7 are provided between the support limiting seat 3 and the adjacent pressing limiting unit 4.

[0036] In some embodiments, please refer to Figure 1 The detection element 6 is configured as a photoelectric sensor switch. The anti-pressure device 1 also includes a mounting plate 5. The mounting plate 5 is mounted on the support foot 9 and located on one side of the fixed frame 2. The detection element 6 is mounted on the mounting plate 5 and is used to monitor whether the fixed frame 2 has shifted. When the fixed frame 2 moves upward, the detection element 6 loses its sensing signal and transmits the signal to the control system. The control system then activates braking measures and issues an alarm.

[0037] Two sets of support limit seats 3 and downward pressure limit units 4 are provided at both ends of the load-bearing frame. When the monitoring equipment controlling the lifting and lowering of the load-bearing frame malfunctions, the load-bearing frame will continue to descend after reaching the set height under the drive of the lifting motor, until the load-bearing frame presses on the material. The transmission chain 7 between the lifting motor and the load-bearing frame has no tension, and the lifting motor continues to rotate. The lifting motor will pull the transmission chain 7 to the side away from the load-bearing frame to continue to rise, and the transmission chain 7 between the lifting motor and the load-bearing frame will stack. The transmission chain 7 drives the driven gear 8 and the fixed frame 2 to rise, the guide 32 loosens and slides up along the guide groove 33, and the spring 411 is compressed until the fixed frame 2 rises to the highest point. At this time, the fixed frame 2 is separated from the monitoring area of ​​the detection element 6, the detection element 6 loses the sensing signal, the detection element 6 transmits the signal to the control system, the control system activates braking measures to control the load-bearing frame, improves the efficiency of loss prevention and fault elimination, and significantly improves safety performance.

[0038] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. Anti- pressure device, characterized in that, The system includes a fixed frame (2), several sets of support and limiting seats (3), at least one set of downward limiting units (4), and a detection component (6); at least one transmission chain (7) and driven gear (8) for driving the lifting and lowering of the load-bearing frame are provided at the end of the load-bearing frame; the driven gear (8) is rotatably disposed within the fixed frame (2), one end of the transmission chain (7) is fixed to the driven gear (8), and the other end of the transmission chain (7) is connected to the lifting motor; the support and limiting seats (3) are fixed to the support legs (9) of the truss, and the downward limiting units (4) The device is positioned above the fixed frame (2) to limit the height to which the transmission chain (7) drives the fixed frame (2) and the driven gear (8) to rise. The detection device (6) is positioned on one side of the fixed frame (2) and is used to monitor whether the fixed frame (2) has shifted. When the displacement monitoring photoelectric sensor of the load-bearing frame malfunctions and presses on the material, the lifting motor pulls the transmission chain (7) to rise so as to drive the driven gear (8) and the fixed frame (2) to rise. The detection device (6) alarms and the lifting motor stops its descent.

2. The pressure guard of claim 1, wherein The pressing limiting unit (4) includes a limiting member (41) and a limiting rod (42); the limiting rod (42) and the supporting limiting seat (3) are spaced apart along the length direction of the supporting foot (9), one end of the limiting rod (42) is fixed to the supporting foot (9), and the other end of the limiting rod (42) passes through the fixing frame (2) and is connected to the limiting member (41). The fixing frame (2) is located between the limiting member (41) and the supporting limiting seat (3).

3. The anti-pressure device according to claim 2, characterized in that, The limiting component (41) includes a spring (411) and a limiting plate (412); the spring (411) is fitted onto the other end of the limiting rod (42); the limiting plate (412) is provided between the spring (411) and the fixed frame (2); a baffle (413) is provided at the other end of the limiting rod (42), and the spring (411) is located between the baffle (413) and the limiting plate (412).

4. The pressure guard of claim 3, wherein The limiting plate (412) is screwed to the fixing frame (2).

5. The pressure guard of claim 3, wherein The other end of the limiting rod (42) is provided with an external thread on its circumference, and the baffle (413) is configured as a hexagonal nut structure. The baffle (413) is threadedly connected to the limiting rod (42).

6. The pressure guard of claim 1, wherein The support limiting seat (3) includes two support plates (31), which are spaced apart along the width direction of the support foot (9). The fixing frame (2) passes through the two support plates (31). Guide members (32) are provided on both sides of the fixing frame (2). A guide groove (33) is provided along the height direction at the end of the support plate (31) away from the support foot (9). The guide members (32) on both sides of the fixing frame (2) are slidably disposed in the guide groove (33).

7. The pressure guard of claim 6, wherein The guide member (32) is configured as a bolt structure, and one end of the guide member (32) passes through the corresponding guide groove (33) and is threaded to the fixed frame (2).

8. The pressure guard of claim 6, wherein The guide groove (33) is open at one end away from the support foot (9).

9. The pressure guard of claim 1, wherein The support limiting seat (3) and the pressing limiting unit (4) are each provided in two sets, and the two sets of pressing limiting units (4) are located between the two sets of support limiting seats (3); the driven gear (8) and the transmission chain (7) are provided between the support limiting seat (3) and the adjacent pressing limiting unit (4).

10. The pressure guard of claim 1, wherein The detection element (6) is configured as a photoelectric sensor switch structure, and the anti-pressure device also includes a mounting plate (5); the mounting plate (5) is set on the support foot (9) and located on one side of the fixed frame (2), and the detection element (6) is installed on the mounting plate (5).

Images