Novel double-anti-falling protection tray stacking machine

Abstract

The invention relates to the technical field of storage and transportation equipment, and discloses a novel dual anti-falling protection tray stacking machine which comprises a stacking machine body, guide rails symmetrically arranged on the two sides of the stacking machine body, a cargo carrying table arranged in the middles of the guide rails and anti-falling mechanisms symmetrically arranged on the two sides of the top of the cargo carrying table. The anti-falling mechanism comprises a fixing block arranged at the top of the cargo carrying table, sliding grooves symmetrically formed in the inner wall of the fixing block, clamping blocks symmetrically arranged in the fixing block, brake pads arranged on the opposite sides of the clamping blocks, a transverse rod arranged at the bottom of the fixing block and a driven wheel arranged in the middle of the transverse rod. The rotating arms are symmetrically arranged in the middle of the transverse rod, the supports are symmetrically arranged at the bottom of the fixing block, and the driving wheels are jointly arranged at the opposite ends of the two supports. By arranging the anti-falling mechanism, the state of the cable is responded in real time, the cargo carrying table can be braked in time when the cable is loosened or broken, and the falling risk is avoided when the cable of a traditional stacking machine loses efficacy.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of warehouse transportation equipment, and particularly relates to a novel double-falling-prevention pallet stacker. BACKGROUND

[0002] The pallet stacker is an automatic warehouse equipment, which is mainly used for efficiently carrying, stacking and storing pallet goods. The pallet stacker accurately stores the pallet goods into a designated shelf or takes out the pallet goods to a sorting area through a lifting mechanism, a mechanical arm or a conveying system, greatly improves the warehouse space utilization rate and operation efficiency. The equipment can reduce manual operation and reduce error rate, and is suitable for fields such as logistics centers, manufacturing industries and cold chain warehouses, and is one of the core equipment for realizing intelligent logistics and automatic warehouse. The stability and high-precision characteristics make it an important tool for modern supply chain management.

[0003] The traditional stacker is widely used in the field of warehousing, but due to the limitation of its structure and working principle, there are some problems that cannot be ignored. For example, in the long-term operation of the traditional stacker, the cable is prone to looseness or breakage due to continuous load and wear, but the traditional design lacks an effective mechanical falling-prevention protection mechanism. The load table of the traditional stacker usually only relies on a limiting baffle or a gravity hook as a falling-prevention measure, and these devices have obvious safety defects. In the case of sudden cable breakage, the traditional mechanical hook needs to rely on the inertial impact of the load table when it falls or the falling speed to reach a certain threshold to trigger the brake. This passive response mode has a brake delay, which may cause the load table to fall further before it stops, resulting in damage to the goods and serious safety hazards. SUMMARY

[0004] In view of the problem that the existing technology lacks a response mechanism for cable looseness and breakage of the stacker, a novel double-falling-prevention pallet stacker is proposed.

[0005] The purpose is to brake the load table when the cable is loosened beyond the safe range or breaks.

[0006] The technical scheme of the present application is a novel double-falling-prevention pallet stacker, which comprises a stacker body, guide rails symmetrically arranged on both sides of the stacker body, a load table arranged in the middle of the guide rails, and a falling-prevention mechanism symmetrically arranged on both sides of the top of the load table. The anti-falling mechanism comprises a fixed block arranged on the top of the loading platform, a sliding groove symmetrically arranged on the inner wall of the fixed block, a clamping block symmetrically arranged in the fixed block, a brake pad arranged on the opposite side of the clamping block, the clamping block and the nearest sliding groove being limitingly and slidably connected, a horizontal rod arranged at the bottom of the fixed block, a driven wheel arranged in the middle of the horizontal rod, a swing arm symmetrically arranged in the middle of the horizontal rod, a support symmetrically arranged at the bottom of the fixed block, a driving wheel arranged at the opposite end of the two supports, the driven wheel and the driving wheel being meshingly connected, an extension unit symmetrically arranged on both sides of the driving wheel, and an insurance unit arranged at the top of the anti-falling mechanism. The fixed block provides support for the extension unit and the insurance unit, the sliding groove limits the movement direction of the clamping block, the two clamping blocks move upwards to drive the corresponding brake pads to contact the guide rail, the horizontal rod rotates through the driven wheel while the driving wheel rotates, and the horizontal rod drives the swing arm to swing while rotating.

[0007] Further, side support plates are arranged on both sides of the bottom of the fixed block, and both ends of the horizontal rod are rotatably connected with the two support plates.

[0008] Further, the extension unit comprises a shaft sleeve arranged on the inner side of the support, a driving hole arranged on the outer side of the shaft sleeve, an extension rod arranged in the shaft sleeve, a driving block arranged on the end of the extension rod close to the driving wheel, a roller arranged on the end of the extension rod away from the driving wheel, the roller abutting against the cable on the stacker body, a pawl arranged on the end of the shaft sleeve close to the driving wheel, a tooth groove symmetrically arranged on both sides of the driving wheel, and an ejection spring arranged in the shaft sleeve, both ends of the ejection spring abutting against the extension rod and the inner wall of the shaft sleeve respectively.

[0009] Further, the end of the shaft sleeve close to the driving wheel is symmetrically provided with a shallow groove, the pawl is composed of a return spring and a rotating block, both ends of the return spring are fixedly connected with the rotating block and the inner wall of the shallow groove, and the rotating block is rotatably connected with the shaft sleeve.

[0010] Further, a guide groove is arranged on the top of the extension rod, a guide block is arranged on the inner wall of the side of the support close to the roller, and the guide groove and the guide block are slidably connected.

[0011] Further, the insurance unit comprises a swing rod arranged on the top of the fixed block, a stand arranged on the side of the fixed block close to the swing rod, a clamping block arranged in the stand, a stop block arranged on the inner wall of the top of the stand, a traction line arranged on the side of the clamping block close to the swing rod, the bottom of the traction line penetrating the stand and being fixedly connected with the swing rod, and a rack arranged on the side of the guide rail close to the stand.

[0012] Further, a bent rod is symmetrically arranged on the end of the swing rod close to the rack, and the bottom end of the bent rod abuts against the corresponding clamping block.

[0013] Compared with the prior art, the present application has the following advantages: 1. By setting the anti-falling mechanism, the load platform can be braked in time when the cable is loose or broken, avoiding the risk of falling. When the cable of the traditional stacker fails, the load platform may lose control and fall due to the loss of traction, causing damage to the goods or equipment. The role of the anti-falling mechanism is to intervene quickly when the cable state is abnormal, limiting the movement of the load platform to prevent accidents. This protective measure reduces downtime caused by cable problems and reduces maintenance costs. In addition, stable operation of the load platform also reduces the loss of goods due to shaking or falling. By adding the anti-falling mechanism, the overall safety performance of the stacker is improved, and the operation process is more reliable. This design improvement makes the equipment stable in long-term use and suitable for high-intensity operating environments.

[0014] 2. By setting the telescopic unit, the cable tension can be responded in real time. When the cable is loose due to long-term use, causing the tension to be lower than the set threshold, the mechanism will trigger the braking function immediately. This mechanism directly affects the movement control of the load platform. When insufficient tension is detected, the load platform is automatically limited to prevent accidental displacement caused by cable relaxation. This system maintains the normal working state of the cable through mechanical means, avoiding the impact of insufficient tension on the stability of equipment operation. Once the telescopic unit determines that the cable is in an abnormal relaxed state, the load platform will be locked to ensure it remains stationary in a fixed position. This design reduces safety hazards caused by cable problems and reduces the interference of equipment failure on the operation process. In this way, the stacker can intervene in time when the cable tension is abnormal, improving operational safety and reducing the impact of potential risks on production efficiency and equipment life.

[0015] 3. By setting the insurance unit, when the telescopic unit is triggered due to cable relaxation, the insurance unit will be started simultaneously. The insurance unit provides secondary braking to the load platform through mechanical engagement, forming a redundant protection. When the telescopic unit acts, the rack and block mechanism of the insurance unit immediately intervenes, directly limiting the movement freedom of the load platform. This linkage mechanism ensures that the load platform remains stable even in extreme situations, improving the reliability of safety protection and avoiding the limitations of a single protection mechanism. The insurance unit serves as a backup measure to continue providing continuous restraint after the telescopic unit completes the initial braking to prevent accidental sliding. This design concept focuses on establishing a multi-level protection system to minimize potential risks through complementary cooperation of mechanical structures. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 The figure is a schematic diagram of the overall structure of the invention; Figure 2 The figure is a schematic diagram of the load platform structure of the invention; Figure 3 The figure is a schematic diagram of the connection between the anti-falling mechanism and the load platform of the invention; Figure 4 Fig. 1 is a schematic diagram of the overall structure of the fixed block of the present application; Figure 5 Fig. 2 is a schematic diagram of the relative position of the clamping block and the guide rail of the present application; Figure 6 Fig. 3 is a schematic diagram of the overall structure of the anti-falling mechanism of the present application; Figure 7 Fig. 4 is a schematic diagram of the clamping block structure of the present application; Figure 8 Fig. 5 is a schematic diagram of the connection between the support and the fixed block of the present application; Figure 9 Fig. 6 is a schematic diagram of the connection between the telescopic rod and the shaft sleeve of the present application; Figure 10 Fig. 7 is a schematic diagram of the internal structure of the shaft sleeve of the present application; Figure 11 Fig. 8 is a schematic diagram of the gear slot structure of the present application; Figure 12 Fig. 9 is a schematic diagram of the overall structure of the safety unit of the present application; Figure 13 Fig. 10 is a schematic diagram of the connection between the upright and the clamping block of the present application; Figure 14 Fig. 11 is a schematic diagram of the stop block structure of the present application.

[0017] In the drawings: 1, stacker main body; 2, guide rail; 3, cargo platform; 4, anti-falling mechanism; 41, fixed block; 42, sliding groove; 43, clamping block; 44, brake pad; 45, crossbar; 46, driven wheel; 47, swing arm; 48, support; 49, driving wheel; 410, shaft sleeve; 411, driving hole; 412, telescopic rod; 413, driving block; 414, roller; 415, pawl; 416, gear slot; 417, ejection spring; 418, swing rod; 419, upright; 420, clamping block; 421, stop block; 422, traction line; 423, rack. DETAILED DESCRIPTION

[0018] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0019] Example 1, refer to Figures 1-14For the first embodiment of the present application, a new double-fall-prevention protection tray stacker is provided, which comprises a stacker body 1, guide rails 2 symmetrically fixedly connected on both sides of the stacker body 1, a loading platform 3 slidably connected in the middle of the guide rails 2, and a fall-prevention mechanism 4 symmetrically installed on both sides of the top of the loading platform 3; the fall-prevention mechanism 4 comprises a fixed block 41 fixedly connected on the top of the loading platform 3, sliding grooves 42 symmetrically formed in the inner wall of the fixed block 41, clamping blocks 43 symmetrically slidably connected in the fixed block 41, brake pads 44 fixedly connected on the opposite sides of the clamping blocks 43, the clamping blocks 43 being limitingly and slidably connected with the nearest sliding grooves 42, a horizontal rod 45 rotatably connected on the bottom of the fixed block 41, a driven wheel 46 fixedly connected in the middle of the horizontal rod 45, swing arms 47 symmetrically fixedly connected in the middle of the horizontal rod 45, brackets 48 symmetrically fixedly connected on the bottom of the fixed block 41, a driving wheel 49 commonly rotatably connected on the opposite end of the two brackets 48, the driving wheel 49 being meshingly connected with the driven wheel 46, telescopic units symmetrically assembled on both sides of the driving wheel 49, and an insurance unit assembled on the top of the fall-prevention mechanism 4; the fixed block 41 provides support for the telescopic units and the insurance unit, the sliding grooves 42 limit the moving direction of the clamping blocks 43, the two clamping blocks 43 move upward to drive the corresponding brake pads 44 to contact the guide rails 2, the driving wheel 49 rotates to drive the horizontal rod 45 to rotate through the driven wheel 46, and the horizontal rod 45 drives the swing arms 47 to swing while rotating.

[0020] Specifically, the fixed block 41 is the connecting fulcrum between the fall-prevention mechanism 4 and the loading platform 3, the driving wheel 49 rotates to drive the driven wheel 46 to rotate, the driven wheel 46 drives the swing arms 47 to swing upward through the horizontal rod 45, the swing arms 47 swing upward to lift the clamping blocks 43 upward, the clamping blocks 43 can only move along the sliding grooves 42 due to the constraint of the sliding grooves 42, the clamping blocks 43 move upward to drive the brake pads 44 to move toward the corresponding guide rails 2, and the guide rails 2 are connected with the brake pads 44, if the clamping blocks 43 move downward relative to the guide rails 2, the contact force between the brake pads 44 and the guide rails 2 is increased, thereby increasing the braking effect of the brake pads 44.

[0021] Referring to Figure 6 , side plates are arranged on both sides of the bottom of the fixed block 41, and the two ends of the horizontal rod 45 are rotatably connected with the two plates.

[0022] Specifically, the fixed block 41 constrains the horizontal rod 45 through the plates, so that the horizontal rod 45 can only rotate in place.

[0023] Referring to Figures 1-14The telescopic unit comprises a shaft sleeve 410 rotatably connected to the inner side of the support 48, a driving hole 411 formed on the outer side of the shaft sleeve 410, a telescopic rod 412 slidably connected to the inner side of the shaft sleeve 410, a driving block 413 fixedly connected to one end of the telescopic rod 412 close to the driving wheel 49, a roller 414 rotatably connected to the other end of the telescopic rod 412 away from the driving wheel 49, the roller 414 abutting against the cable on the stacker body 1, a pawl 415 rotatably connected to one end of the shaft sleeve 410 close to the driving wheel 49, tooth grooves 416 symmetrically formed on both sides of the driving wheel 49, and an ejection spring 417 abutting against the inner wall of the shaft sleeve 410, both ends of the ejection spring 417 abutting against the telescopic rod 412 and the inner wall of the shaft sleeve 410 respectively.

[0024] Specifically, the support 48 limits the shaft sleeve 410 and the telescopic rod 412 connected thereto, so that the shaft sleeve 410 can only rotate in place, and the telescopic rod 412 can only move along its own axis. The ejection spring 417 keeps the telescopic rod 412 away from the shaft sleeve 410. The telescopic rod 412 moves while driving the driving block 413 to move at the same time. The driving block 413 rotates the shaft sleeve 410 through the driving hole 411. The shaft sleeve 410 rotates while driving the pawl 415 to rotate. The pawl 415 cooperates with the tooth grooves 416. Only when the pawl 415 moves towards the guide rail 2 can it drive the driving wheel 49 to rotate. The roller 414 keeps in contact with the corresponding cable under the action of the telescopic rod 412. When the cable is tightened, the force is transmitted to the ejection spring 417 through the roller 414 and the telescopic rod 412, so that the ejection spring 417 remains contracted. After the cable is too loose or broken, the ejection spring 417 ejects the telescopic rod 412. The telescopic rod 412 rotates the shaft sleeve 410 through the driving block 413 and the driving hole 411. The shaft sleeve 410 drives the driving wheel 49 to rotate through the pawl 415.

[0025] With reference to Figures 8-11 , one end of the shaft sleeve 410 close to the driving wheel 49 is symmetrically provided with a shallow groove. The pawl 415 is composed of a return spring and a rotating block. Both ends of the return spring are fixedly connected to the rotating block and the inner wall of the shallow groove respectively. The rotating block is rotatably connected to the shaft sleeve 410.

[0026] Specifically, the clamping jaw can be retracted into the shallow groove after being squeezed, and can be reset under the action of the return spring.

[0027] With reference to Figure 9 , a guide groove is formed on the top of the telescopic rod 412. A guide block is arranged on the inner wall of the support 48 close to the roller 414. The guide groove and the guide block are slidably connected.

[0028] Specifically, the support 48 restrains the telescopic rod 412 through the guide block and the guide groove to prevent the telescopic rod 412 from rotating.

[0029] Example 2, with reference toFigures 1-14 For the second embodiment of the present application, which is different from the first embodiment, the insurance unit comprises a swing rod 418 rotatably connected to the top of the fixed block 41, a stand 419 fixedly connected to the fixed block 41 near the swing rod 418, a clamping block 420 rotatably connected inside the stand 419, a stop block 421 slidably connected to the inner wall of the top of the stand 419, a traction line 422 fixedly connected to the clamping block 420 near one side of the swing rod 418, the bottom of the traction line 422 penetrating the stand 419 and being fixedly connected to the swing rod 418, and a rack 423 fixedly connected to the guide rail 2 near the stand 419.

[0030] Specifically, the upward movement of the clamping block 43 drives the swing rod 418 to rotate, the swing rod 418 pulls the traction line 422 while rotating, the traction line 422 pulls the clamping block 420, the clamping block 420 rotates to the maximum stroke, and the clamping block 420 is pressed against the inclined surface of the stop block 421 to move the stop block 421 upward. After the clamping block 420 rotates to the maximum stroke, the clamping block 420 is released from the stop block 421, the stop block 421 is reset under the action of gravity and blocks the clamping block 420, so that the clamping block 420 cannot rotate in the opposite direction. After the clamping block 420 is pulled, it will engage with the rack 423, losing the freedom of upward and downward movement, thereby braking the loading platform 3.

[0031] With reference to Figures 12-14 , the end of the swing rod 418 near the rack 423 is symmetrically provided with a bent rod, and the bottom end of the bent rod abuts against the corresponding clamping block 43.

[0032] Specifically, the upward movement of the clamping block 43 drives the swing rod 418 to rotate, the swing rod 418 pulls the traction line 422 while rotating, the traction line 422 pulls the clamping block 420, the clamping block 420 rotates to the maximum stroke, and the clamping block 420 is pressed against the inclined surface of the stop block 421 to move the stop block 421 upward. After the clamping block 420 rotates to the maximum stroke, the clamping block 420 is released from the stop block 421, the stop block 421 is reset under the action of gravity and blocks the clamping block 420, so that the clamping block 420 cannot rotate in the opposite direction. After the clamping block 420 is pulled, it will engage with the rack 423, losing the freedom of upward and downward movement, thereby braking the loading platform 3.

[0033] In combination with Embodiment 1-2, the working principle of the present application is as follows: when the cable suddenly breaks while the stacker is running, the load platform 3 is lowered, or the tension is insufficient to overcome the force of the ejection spring 417, the ejection spring 417 will push the telescopic rod 412 to move away from the driving wheel 49, the telescopic rod 412 rotates the shaft sleeve 410 through the driving block 413 and the driving hole 411, the shaft sleeve 410 rotates the driving wheel 49 through the pawl 415, the driving wheel 49 rotates the swing arm 47 through the driven wheel 46 and the cross rod 45, the clamp block 43 is pushed upward, the clamp block 43 moves upward while driving the brake pad 44 to move close to the guide rail 2, the brake pad 44 brakes the load platform 3 through the friction force between itself and the guide rail 2, the more the load platform 3 moves downward, the greater the friction force between the guide rail 2 and the brake pad 44, through the above process, the state of the cable is responded in time, at the same time that the clamp block 43 moves upward, the swing rod 418 at one end away from the guide rail 2 swings downward, at the same time that the swing rod 418 swings, the clamp block 420 is pulled to rotate to the meshing state with the rack 423 through the traction line 422, the clamp block 420 brakes the load platform 3 through the mutual constraint between the clamp block 420 and the rack 423, to prevent the case that the friction force between the brake pad 44 and the guide rail 2 is insufficient to brake the load platform 3.

[0034] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present application, which should be covered in the scope of the claims of the present application.

Claims

1. A novel double-anti-fall protection pallet stacker, comprising a stacker body (1), guide rails (2) symmetrically arranged on both sides of the stacker body (1), and a loading platform (3) disposed in the middle of the guide rails (2), characterized in that: It also includes anti-fall mechanisms (4) symmetrically arranged on both sides of the top of the loading platform (3); The anti-fall mechanism (4) includes a fixed block (41) set on the top of the loading platform (3), a sliding groove (42) symmetrically opened on the inner wall of the fixed block (41), a clamping block (43) symmetrically set inside the fixed block (41), a brake pad (44) set on the opposite side of the clamping block (43), the clamping block (43) being slidably connected to the nearest sliding groove (42), a crossbar (45) set at the bottom of the fixed block (41), a driven wheel (46) set in the middle of the crossbar (45), a rotating arm (47) symmetrically set in the middle of the crossbar (45), a bracket (48) symmetrically set at the bottom of the fixed block (41), an active wheel (49) set together at the opposite end of the two brackets (48), the driven wheel (46) being engaged with the active wheel, telescopic units symmetrically set on both sides of the active wheel (49), and a safety unit set on the top of the anti-fall mechanism (4). The fixed block (41) provides support for the telescopic unit and the safety unit. The slide groove (42) limits the moving direction of the clamping block (43). The two clamping blocks (43) move upward and drive the corresponding brake pads (44) to contact the guide rail (2). While the driving wheel (49) rotates, it drives the crossbar (45) to rotate through the driven wheel (46). While the crossbar (45) rotates, it drives the swing arm (47) to swing.

2. The novel double-fall protection pallet stacker according to claim 1, characterized in that: The bottom sides of the fixed block (41) are provided with side support plates, and the two ends of the crossbar (45) are rotatably connected to the two support plates.

3. The novel double-fall protection pallet stacker according to claim 1, characterized in that: The telescopic unit includes a bushing (410) disposed inside the bracket (48), a drive hole (411) opened on the outside of the bushing (410), a telescopic rod (412) disposed inside the bushing (410), a drive block (413) disposed on the end of the telescopic rod (412) near the drive wheel (49), a roller (414) disposed on the end of the telescopic rod (412) away from the drive wheel (49), the roller (414) abutting against the cable on the stacker body (1), a pawl (415) disposed on the end of the bushing (410) near the drive wheel (49), toothed grooves (416) symmetrically opened on both sides of the drive wheel (49), and an ejector spring (417) disposed inside the bushing (410), the two ends of the ejector spring (417) abutting against the inner wall of the telescopic rod (412) and the bushing (410) respectively.

4. The novel double-fall protection pallet stacker according to claim 3, characterized in that: The bushing (410) has shallow grooves symmetrically opened at one end near the drive wheel (49). The pawl (415) consists of a return spring and a rotating block. The two ends of the return spring are fixedly connected to the rotating block and the inner wall of the shallow groove, respectively. The rotating block is rotatably connected to the bushing (410).

5. The novel double-fall protection pallet stacker according to claim 3, characterized in that: The top of the telescopic rod (412) is provided with a guide groove, and the inner wall of the bracket (48) near the roller (414) is provided with a guide block. The guide groove and the guide block are slidably connected.

6. The novel double-fall protection pallet stacker according to claim 1, characterized in that: The safety unit includes a swing rod (418) set on the top of the fixed block (41), a column (419) set on the fixed block (41) near the swing rod (418), a locking block (420) set inside the column (419), a stop block (421) set on the inner wall of the top of the column (419), a traction line (422) set on the side of the locking block (420) near the swing rod (418), the bottom of the traction line (422) passing through the column (419) and fixedly connected to the swing rod (418), and a rack (423) set on the side of the guide rail (2) near the column (419).

7. The novel double-fall protection pallet stacker according to claim 6, characterized in that: The swing rod (418) has a symmetrically arranged bent rod at one end near the rack (423), and the bottom end of the bent rod abuts against the corresponding clamping block (43).

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