CN219950400U - Stacker with overspeed protection - Google Patents

Abstract

The utility model discloses a stacker with overspeed protection, which is matched with a lower pulley and an upper pulley assembly through a steel wire assembly in a transmission way, wherein a linkage device is slidably arranged on a carrying platform and is connected with two ends of the steel wire assembly, when the carrying platform overspeed, a speed limiter brakes the steel wire assembly, the steel wire assembly pulls the linkage device to slide relative to the carrying platform and activates a safety clamp, the safety clamp and a stand column of the stacker are matched for braking, so that the safety clamp can be started for braking immediately after the carrying platform stalls, accidents are prevented, and the safety of the stacker is ensured.

Description

Stacker with overspeed protection

Technical Field

The utility model relates to the field of storage automation equipment, in particular to a stacker with overspeed protection.

Background

An automatic stereoscopic warehouse is a new concept in logistics warehouse, which is a warehouse for storing materials by using a high-level stereoscopic goods shelf, and is controlled and managed by a computer, and the materials are stored and taken out by adopting an automatic control stacker.

The tunnel stacker is a special crane developed along with the appearance of an automatic stereoscopic warehouse, is generally abbreviated as a stacker, is the most important lifting and transporting equipment in the automatic stereoscopic warehouse, and runs along a track in a tunnel of the automatic stereoscopic warehouse, stores materials or products waiting for carrying objects at a tunnel junction into a specified goods lattice, or takes out the materials or products waiting for carrying objects in the specified goods lattice and conveys the materials or products waiting for carrying objects to the tunnel junction, so as to finish the warehouse in-out operation of the materials or products waiting for carrying objects.

At present, a stacker generally adopts a steel wire rope to lift materials or products to be carried, and the materials or products to be carried are subjected to warehouse-in and warehouse-out operation. The stacker is in the during operation and realizes the transfer to the high-rise goods in the three-dimensional storehouse through the objective table that controls on the stacker reciprocates along the stand of stacker, because the objective table needs to reciprocate often, can sometimes lead to the objective table to be out of control because of the too heavy or equipment trouble of goods, the objective table falling speed too fast can produce great potential safety hazard when out of control to this problem, has had some overspeed protection device in the present market, but generally has the problem that the structure is complicated, inconvenient installation and operation to and the reliability is poor.

Disclosure of Invention

The embodiment of the utility model provides a stacker with overspeed protection, which has the advantages of simple structure, convenience in installation and good reliability.

The utility model provides a stacker with overspeed protection, which comprises a frame, a cargo carrying platform, a speed limiting protection system and a lifting power system, wherein the frame comprises a lower beam, an upright post and an upper beam, the upright post is fixed between the lower beam and the upper beam, the lifting power system is configured on the frame, the cargo carrying platform is connected with the lifting power system and ascends and descends along the upright post under the driving of the lifting power system, the cargo carrying platform is provided with a safety clamp matched with the upright post of the stacker for braking, the speed limiting protection system comprises a speed limiter, an upper pulley block, a steel wire assembly and a linkage device, the speed limiter is configured on the lower beam and is provided with a lower pulley capable of braking, the upper pulley block is configured on the upper beam, the steel wire assembly is in transmission fit with the lower pulley and the upper pulley assembly, the linkage device is rotatably configured on the cargo carrying platform and is connected with two ends of the steel wire assembly, and when the cargo carrying platform is overspeed, the speed limiter brakes the steel wire assembly, the steel wire assembly brakes the cargo carrying assembly and the steel wire assembly brakes the safety clamp and the safety clamp are correspondingly braked and the upright post are rotatably matched with the stacker.

According to the stacker with overspeed protection, the steel wire assembly is in transmission fit with the lower pulley and the upper pulley assembly, the interlocking device is rotatably arranged on the carrying platform and connected with the two ends of the steel wire assembly, when the carrying platform falls down due to stall, the speed limiter brakes the steel wire assembly, the steel wire assembly pulls the interlocking device to rotate relative to the carrying platform and activates the safety tongs, the safety tongs and the upright post of the stacker are in matched braking, the safety tongs can be started to brake immediately after the carrying platform falls down, accidents are prevented, safety of the stacker is guaranteed, and the stacker is simple in structure, convenient to install and good in reliability.

Drawings

In order to more clearly illustrate the technical solutions of the application, the drawings that are required to be used in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the application and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a stacker with overspeed protection provided by an embodiment of the present utility model;

FIG. 2 is a partial schematic view of a stacker with overspeed protection provided by an embodiment of the present utility model;

fig. 3 is a partial schematic view of a stacker with overspeed protection according to an embodiment of the present utility model.

Detailed Description

The technical solutions in the application embodiments will be clearly and completely described below with reference to the drawings in the application embodiments.

Referring to fig. 1-3, the present utility model provides a stacker 100 with overspeed protection, the stacker 100 including a frame 10, a cargo platform 20, a speed limiting protection system 30, and a lifting power system (not shown). The frame 10 includes a lower beam 11, a column 12, and an upper beam 13, the column 12 is fixed between the lower beam 11 and the upper beam 13, and the lifting system is configured on the frame 10. The cargo platform 20 is connected to the lifting power system and is driven by the lifting power system to lift up and down along the upright 12. The cargo platform 20 is provided with safety tongs which cooperate with the uprights 12 of the stacker 100 for braking. The speed limiting protection system 30 comprises a speed limiter 31, an upper pulley block 32, a steel wire assembly 33 and a linkage device 34, wherein the speed limiter 31 is arranged on the lower beam 11 and is provided with a lower pulley 311 capable of being braked, the upper pulley block 32 is arranged on the upper beam 13, the steel wire assembly 33 is in transmission fit with the lower pulley 311 and the upper pulley block 32, and the linkage device 34 is rotatably arranged on the cargo carrying platform 20 and is connected with two ends of the steel wire assembly 33.

When the cargo platform 20 is overspeed, the speed limiter 31 brakes the steel wire assembly 33, and the steel wire assembly 33 pulls the interlocking device 34 to slide relative to the cargo platform 20 and activate the safety gear, and the safety gear is matched with the upright post 12 of the stacker 100 to brake.

It will be appreciated that the stacker 100 has a high cargo capacity and a high safety protection. The lower beam 11, the upright posts 12 and the upper beam 13 are all rigidly connected through a steel structure, so that the stacker 100 can improve the load capacity. The stacker 100 is provided with two upright posts 12, and the two upright posts 12 are fixed between the lower beam 11 and the upper beam 13. The lower beam 11 is used to provide a base support structure for the stacker 100. The upright 12 provides lifting support for the cargo platform 20 on the one hand and for the cargo platform 20 on the other hand.

The lifting power system can be powered by a motor or a fuel engine. The power of the lifting power system is output to the cargo platform 20, and the cargo platform 20 can be lifted from the position close to the lower beam 11 to the upper beam 13, so that the low-level cargo can be carried to the high-level. Naturally, the cargo platform 20 may also be lowered from a high position towards a position close to the lower beam 11 under the power of the lifting power system, so that the cargo at the high position may be carried from a high position to a low position. The cargo platform 20 is lifted at a smooth and balanced rate during the lifting of the cargo platform 20 by the lifting power system. Once the movement speed of the cargo platform 20 suddenly exceeds the set stable speed range during descent, the lifting power system is considered to be faulty, and at this time, the safety tongs are automatically activated by the overspeed protection system 30 to brake the cargo platform 20, so as to limit the movement of the cargo platform 20.

Specifically, the interlocking device 34 is connected to the cargo platform 20, and when the cargo platform 20 is lifted normally, the interlocking device 34 is driven to lift normally relative to the frame 10, and at this time, the steel wire assembly 33 also reciprocates under the cooperation of the lower pulley 311 and the upper pulley block 32, and drives the lower pulley 311 to rotate. Since the cargo platform 20 is lifted at a substantially constant speed, the linkage 34 also drives the wire assembly 33 at a constant speed, and the lower pulley 311 also rotates at a constant speed. Once the cargo platform 20 descends to overspeed, the rotation speed of the lower pulley 311 is overspeed, the overspeed governor 31 can detect the overspeed of the rotation speed of the lower pulley 311 or the steel wire assembly 33, and when the overspeed governor 31 detects the overspeed of the lower pulley 311, the lower pulley 311 is immediately braked to prevent the rotation of the lower pulley 311, and at the moment, the damping moment of the lower pulley 311 is transmitted to the interlocking device 34 through the steel wire assembly 33 by utilizing the transmission matching relation of the lower pulley 311 and the steel wire assembly 33. When the lower pulley 311 is braked and prevented from rotating, the cargo platform 20 still descends at overspeed, the interlocking device 34 is caused to rotate relative to the cargo platform 20 after receiving the damping moment of the wire assembly 33, and the interlocking device 34 moves to a position for activating the safety gear, so that the safety gear immediately moves to a state for braking the cargo platform 20.

In this embodiment, the speed limiter 31 includes a speed limiting base 312, a pulley bracket 313, and an overspeed braking mechanism 314, the speed limiting base 312 is fixed to the lower beam 11, the pulley bracket 313 is slidably connected to the speed limiting base 312, the lower pulley 311 is provided to the pulley bracket 313, and the overspeed braking mechanism 314 is connected to the pulley bracket 313 and brakes the lower pulley 311 when the lower pulley 311 rotates overspeed. The speed limit base 312 is fixed to one side of the lower beam 11. The speed limit base 312 is formed of two horizontally extending cantilevers 3121. The pulley support 313 is a sliding fit between two cantilevers 3121. The lower pulley 311 is rotatable on the pulley bracket 313. The overspeed braking mechanism 314 is movably coupled to the pulley bracket 313 and is coupled to an actuator on the pulley bracket 313. The overspeed braking mechanism 314 may be a cam-pawl mechanism, and the cam-pawl mechanism is used to implement braking on the lower pulley 311 by matching with a tooth slot on the lower pulley 311. The actuator may be an electromagnetic actuator that outputs a magnetic moment by receiving an electrical signal and acts on the magnet by a magnetic moment to generate a ratchet braking mechanism to brake the lower pulley 311. The pulley bracket 313 is provided with a rotation speed sensor for sensing the rotation speed of the lower pulley 311, and once the rotation speed of the lower pulley 311 exceeds the speed, the rotation speed sensor sends a braking electric signal to the electromagnetic actuator, so as to drive the overspeed braking mechanism 314 to brake the lower pulley 311. It will be appreciated that the speed limiter 31 may be self-contained or co-powered with the lifting power system.

In this embodiment, the speed limiter 31 further includes a guide rod 315 and a tensioning spring 316, one end of the guide rod 315 is fixed to the pulley support 313, the other end of the guide rod is in sliding fit with the speed limiting base 312, and the tensioning spring 316 is sleeved on the guide rod 315 and precompressed between the speed limiting base 312 and the pulley support 313, so as to tension the steel wire assembly 33. Utilize guide arm 315 is right pulley support 313 is relative speed limit base 312 slip direction can guarantee pulley support 313 with speed limit base 312 directional slip, tensioning spring 316 can tensioning wire rope on the wire subassembly 33, guarantees the steady operation of wire rope, prevents that wire rope is in the relaxation state and skidding in the pulley, can prevent simultaneously that the detection of overspeed governor 31 from appearing the deviation, avoids the false triggering of safety tongs, ensures the stability of work.

In this embodiment, the interlocking device 34 includes a driving rod 341, a wire buckle 342, and a sliding block 343, the loading platform 20 is provided with a guide rail 21 adjacent to one side of the wire assembly 33, the sliding block 343 is slidably matched with the guide rail 21, the driving rod 341 is fixedly connected with the sliding block 343, the driving rod 341 is provided with an activating end 3411 capable of activating the safety tongs, and the wire buckle 342 is fixed on the driving rod 341 and is fixedly connected with two ends of the wire assembly 33. The driving rod 341 is fixed to the sliding block 343 at a position between both ends. The end of the driving rod 341 remote from the activating end 3411 is provided with a connecting rod. The link protrudes with respect to the driving rod 341. The wire buckle 342 is fixed to an end of the connecting rod. The steel wire 342 is provided with an upper steel ring and a lower steel ring, which are respectively fixed to two ends of the steel wire assembly 33. When the steel wire assembly 33 is braked and decelerated by the lower pulley 311, the activating end 3411 can be driven to move relative to the cargo platform 20 through the connecting rod and the transmission rod 341. The safety gear on the cargo platform 20 is partially folded over the sliding path of the activation end 3411 so that the activation end 3411 slides into a position to bear against the safety gear, which activates the safety gear.

It is understood that the lifting power system is composed of a motor, a gear set and a transmission chain. The motor drives the transmission chain to move through the gear set, and the transmission chain is connected with the lifting cargo platform 20, so that the lifting cargo platform 20 can be driven to lift. The safety tongs may be a caliper mechanism that clamps the drive chain and the upright 12 in the activated condition when the cargo platform 20 is in a lowered stall, allowing the drive chain to immediately stop overspeed movement, thereby providing safety protection to the lifting cargo platform 20.

In this embodiment, the cargo platform 20 is provided with a limit boss 22 on a side wall of the guide rail 21, the interlocking device 34 further includes a limit part 344 and an extension spring 345, the limit part 344 is fixed on the limit boss 22, one end of the extension spring 345 is fixed on the driving rod 341, and the other end is fixed on the limit part 344. The limit boss 22 is opposite to an end of the driving rod 341 away from the activation end 3411, so as to limit the driving rod 341. The stopper 344 pulls the tension spring 345 to achieve tension deformation of the tension spring 345 between the driving rod 341 and the stopper boss 22. The tension spring 345 is fixedly connected to an end of the driving rod 341 remote from the activation end 3411. By utilizing the elastic deformation resetting capability of the tension spring 345, the transmission rod 341 can be reset after the safety tongs are activated, so that the next reactivation and use are facilitated.

In this embodiment, the position of the limiting member 344 relative to the limiting boss 22 is adjustable, so as to adjust the tension deformation space of the tension spring 345. Specifically, the limiting boss 22 is provided with a screw hole, and the limiting piece 344 is screwed to the limiting boss 22, so that the height position of the limiting piece 344 passing through the limiting boss 22 is adjustable, and the deformation space of the tension spring 345 can be adjusted, so as to adjust the deformation resetting capability of the spring.

In this embodiment, the cargo platform 20 is further provided with a limiting supporting member 346 with an adjustable height position relative to the limiting boss 22, and when the cargo platform 20 is lifted and lowered without overspeed, the driving rod 341 is supported against the limiting supporting member 346 and is kept fixed relative to the cargo platform 20. The limiting support 346 is disposed on one side of the limiting member 344. The height-adjustable direction of the limiting abutment 346 relative to the limiting platform is parallel to the height-adjustable direction of the limiting abutment 344. The limiting abutment 346 is also threaded onto the limiting boss 22. Of course, in other embodiments, the limiting abutment 346 may be a bayonet connection to the limiting boss 22. The stop 344 may also be a bayonet lock coupled to the stop boss 22.

In this embodiment, the upper pulley block 32 includes an upper pulley seat 329, an upper pulley bracket 328 and a fixed pulley 327, the upper pulley seat 329 is fixed on the upper beam 13 or the upright 12, the upper pulley bracket 328 is fixed on the upper pulley seat 329, the fixed pulley 327 is rotatably connected to the upper pulley bracket 328, and the steel wire assembly 33 is matched with the fixed pulley 327. The upper pulley block 329 is fixed to one side of the upper beam 13 so as to protrude with respect to one side of the upper beam 13, and the protruding length of the upper pulley block 329 can be adjusted according to circumstances. The upper pulley bracket 328 is fixed to one side of the upper pulley base 329 so that the upper pulley bracket 328 is directly opposite to the speed limiter 31. The fixed pulley 327 is opposite to the lower pulley 311, so that the steel wire assembly 33 can move in the vertical direction, and the steel wire assembly 33 can activate the transmission rod 341. Specifically, the upper pulley block 32 further includes a pulley shaft 325 and a deep groove ball bearing 324, the pulley shaft 325 is fixed on the upper pulley bracket 328, and the deep groove ball bearing 324 is assembled between the pulley shaft 325 and the fixed pulley 327. The deep groove ball bearing 324 is matched between the pulley shaft 325 and the fixed pulley 327, so that the fixed pulley 327 can bear higher radial pressure, and smooth rotation of the fixed pulley 327 is ensured.

In this embodiment, the power system includes a motor and a transmission assembly connected to the motor and the cargo platform 20, where the motor provides lifting power for the cargo platform 20, and the transmission assembly transmits the power of the motor to the cargo platform 20. The transmission assembly can be composed of a gear set and a transmission chain, the gear set can be respectively arranged on the upper beam 13 and the lower beam 11, the transmission chain is wound on gears of the gear set, and the transmission chain is further connected with the lifting cargo platform 20 so as to transmit power to the lifting cargo platform 20. The gear set is used for changing the transmission direction of the transmission chain.

According to the stacker 100 with overspeed protection provided by the embodiment of the utility model, the steel wire assembly 33 is in transmission fit with the lower pulley 311 and the upper pulley block 32, the interlocking device 34 is slidably arranged on the cargo platform 20 and is connected with two ends of the steel wire assembly 33, when the cargo platform 20 overspeed, the speed limiter 31 brakes the steel wire assembly 33, the steel wire assembly 33 pulls the interlocking device 34 to slide relative to the cargo platform 20 and activate the safety tongs, the safety tongs are braked with the upright post 12 of the stacker 100, the safety tongs are started to brake immediately after the cargo platform 20 descends and stalls, accidents are prevented, and the safety of the stacker 100 is ensured.

The foregoing is a preferred embodiment of the application and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the application and are intended to be within the scope of the application.

Claims (10)

1. The utility model provides a stacker with overspeed protection, its characterized in that, the stacker includes frame, cargo platform, speed limit protection system and lift driving system, the frame includes underbeam, stand and upper beam, the stand is fixed in the underbeam reaches between the upper beam, lift driving system dispose in the frame, cargo platform connects lift driving system, and under lift driving system's drive follow the stand is gone up and down, the cargo platform be equipped with the safety tongs of stacker's stand cooperation braking, speed limit protection system includes overspeed governor, upper pulley block, wire subassembly and interlocking device, the overspeed governor dispose in the underbeam to be equipped with the lower pulley of brakeable, upper pulley block spare dispose in the upper beam, wire subassembly transmission fit in the lower pulley with upper pulley assembly, interlocking device rotationally dispose in cargo platform, and connect wire subassembly's both ends, when cargo platform overspeed, the overspeed governor is to wire subassembly braking, wire subassembly pulling cargo device and movable tongs are relative to the safety tongs rotates with the stacker.

2. The stacker of claim 1 wherein said speed limiter comprises a speed limiting base, a pulley bracket and an overspeed braking mechanism, said speed limiting base being secured to said lower beam, said pulley bracket being slidably connected to said speed limiting base, said lower pulley being disposed in said pulley bracket, said overspeed braking mechanism being connected to said pulley bracket and braking said lower pulley when said lower pulley rotates overspeed, said pulley bracket moving relative to said speed limiting base under the pull of said wire assembly to absorb braking impact energy of said lower pulley.

3. The stacker of claim 2 wherein said speed limiter further comprises a guide rod secured to said pulley bracket at one end and slidably engaged with said speed limiting base at the other end, and a tension spring received in said guide rod and precompressed between said speed limiting base and said pulley bracket for tensioning said wire assembly.

4. The stacker of claim 1 wherein said interlock comprises a drive rod, a wire button and a slider, said cargo platform is provided with a guide rail adjacent to one side of said wire assembly, said slider is in sliding engagement with said guide rail, said drive rod is fixedly connected to said slider, said drive rod is provided with an activation end for activating said safety tongs, said wire button is secured to said drive rod and is fixedly connected to both ends of said wire assembly.

5. The stacker of claim 4 wherein said cargo platform has a stop boss on a side wall of said guide rail, said interlocking means further comprising a stop member and an extension spring, said stop member being secured to said stop boss, said extension spring having one end secured to said drive rod and the other end secured to said stop member.

6. The stacker of claim 5 wherein said stop member is adjustable in position relative to said stop boss to adjust the tension deformation space of said tension spring.

7. The stacker of claim 6 wherein said cargo platform is further provided with a limit abutment having an adjustable height relative to said limit boss, said drive rod being in abutment with said limit abutment to remain stationary relative to said cargo platform when said cargo platform is not being lifted or lowered in overspeed.

8. The stacker of claim 1 wherein said upper pulley block includes an upper pulley mount, an upper pulley bracket and a fixed pulley, said upper pulley mount being secured to said upper beam, said upper pulley bracket being secured to said upper pulley mount, said fixed pulley being rotatably connected to said upper pulley bracket, said wire assembly being engaged with said fixed pulley.

9. The stacker of claim 8 wherein the upper pulley block further comprises a pulley shaft secured to the upper pulley bracket and a deep groove ball bearing fitted between the pulley shaft and the fixed pulley.

10. The stacker of claim 1 wherein said power system includes a motor and a drive assembly connecting said motor and said cargo platform, said motor providing lifting power to said cargo platform, said drive assembly transmitting power from said motor to said cargo platform.