Lifting device capable of self-locking and unlocking in nuclear environment

Abstract

The present invention discloses a hoisting device capable of self-locking and unlocking in a nuclear environment, comprising: a hanging beam, two clamping mechanisms and a supporting base; the clamping mechanism comprises: a mounting seat, a movable clamping plate and a guide shaft; the guide shaft is supported on the mounting seat; the two movable clamping plates are slidably sleeved on the outer periphery of the guide shaft; the mounting seat is also provided with: two driving blocks, two driving gears and two connecting pieces; the two driving blocks are respectively slidably connected to the mounting seat and are both formed with driving teeth; the two driving gears are respectively rotatably connected to the mounting seat and respectively mesh with the two driving teeth; one end of the crank of the crank connecting rod is fixedly connected to the driving gear and the other end is rotatably connected to one end of the connecting rod of the crank connecting rod; the other ends of the connecting rods of the two crank connecting rods are respectively rotatably connected to the connecting pieces; the two connecting pieces are respectively fixed to the two movable clamping plates. The hoisting device capable of self-locking and unlocking in a nuclear environment provided by the present invention can realize stable handling of forks and accurately locate the installation position of forks.

Description

Technical Field

[0001] The invention relates to the field of lifting forks, and in particular to a lifting device capable of self-locking and unlocking in a nuclear environment. Background Art

[0002] At present, the replacement of forks is usually done by manual lifting, which often causes accidents such as pinching hands, falling, and hitting feet. The environment in a nuclear environment is complex, and manual labor poses safety risks. It is inconvenient and unsafe to replace forks in a nuclear environment using the above replacement method. If the forks are replaced by a crane and a sling, due to the special site of the nuclear environment, there are no suitable manual handling conditions, and the positioning accuracy of the crane and the sling is very low, and there is a lot of shaking, so assembly is more difficult. Summary of the invention

[0003] At present, when testing forks in a nuclear environment, they are either carried and installed manually or carried by slings. The environment in a nuclear environment is complex, and manual labor poses safety risks. It is inconvenient and unsafe to replace forks in a nuclear environment by manual handling, and accidents such as pinching hands, falling, and hitting feet often occur. Replacing forks by lifting with a crane or slings has problems such as large shaking and low installation positioning accuracy, so assembly is more difficult.

[0004] In order to solve the above technical problems, the present invention provides a hoisting device capable of self-locking and unlocking in a nuclear environment, which adopts the following technical solutions:

[0005] A lifting device capable of self-locking and unlocking in a nuclear environment comprises: a lifting beam, two clamping mechanisms for clamping a fork and a supporting base for supporting and mounting the fork; the two clamping mechanisms are respectively arranged at the two ends of the lifting beam; the supporting base is fixed to the fork from the bottom of the fork; the clamping mechanism comprises: a mounting seat, a movable clamping plate for clamping the fork and a guide shaft for guiding the movable clamping plate; the guide shaft is supported on the mounting seat; the two movable clamping plates are slidably sleeved on the outer periphery of the guide shaft; the mounting seat is also provided with: two driving blocks, two driving gears and two connecting members; the two driving blocks are respectively slidably connected to the mounting seat and are both formed with driving teeth; the two driving gears are respectively rotatably connected to the mounting seat and are respectively meshed with the two driving teeth; the two driving gears are respectively connected to a crank connecting rod; one end of the crank of the crank connecting rod is fixedly connected to the driving gear and the other end is rotatably connected to one end of the connecting rod of the crank connecting rod; the other ends of the connecting rods of the two crank connecting rods are respectively rotatably connected to the connecting members; the two connecting members are respectively fixed to the two movable clamping plates.

[0006] Furthermore, the mounting seat is also rotatably provided with two synchronous gears; the two synchronous gears are meshed with each other and respectively meshed with the two driving gears.

[0007] Furthermore, the clamping mechanism includes two guide shafts; the two guide shafts are rotatably supported on the mounting seat through a support seat.

[0008] Furthermore, the support seat is provided with a top screw for locking the guide shaft.

[0009] Furthermore, the mounting seat is provided with a reduction housing having two guide grooves; two driving blocks are respectively slidably connected to the two guide grooves; the driving gear and the synchronous gear are both installed in the reduction housing; the crank connecting rod is arranged on the outside of the reduction housing and is fixedly connected to the driving gear through a fixed shaft.

[0010] Furthermore, a limit block for limiting the stroke of the crank connecting rod is also provided on the outer side of the reduction housing.

[0011] Furthermore, the mounting seat is also provided with a limiting rod for limiting the end position of the fork.

[0012] Furthermore, the hanging beam is provided with a plurality of movable clamping plates for guiding the clamping mechanism to clamp the fork between the guide rods.

[0013] Furthermore, a hanging portion is provided on the hanging beam for the hook to hang the hanging beam.

[0014] Furthermore, a limiting plate for limiting the installation position of the fork is provided at one end of the supporting base.

[0015] The benefit of the present invention lies in that the lifting device capable of self-locking and unlocking in a nuclear environment can be self-locking and unlocking, no manual handling is required when replacing the fork, and the fork can be stably transported and the fork installation position can be accurately located. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of a hoisting device capable of self-locking and unlocking in a nuclear environment of the present invention;

[0017] Figure 2 yes Figure 1 Schematic diagram of the partial structure of a lifting device capable of self-locking and unlocking in a nuclear environment;

[0018] Figure 3 yes Figure 1 A schematic diagram of another partial structure of a lifting device capable of self-locking and unlocking in a nuclear environment;

[0019] A lifting device 10 capable of self-locking and unlocking in a nuclear environment, a lifting beam 11, a clamping mechanism 12, a mounting seat 121, a movable clamping plate 122, a guide shaft 123, a driving block 124, a driving gear 125, a connecting piece 126, a driving tooth 127, a synchronous gear 128, a supporting seat 129, a top screw 130, a reduction housing 131, a guide groove 1312, a limit block 132, a crank connecting rod 133, a supporting base 14, a limit rod 15, a guide rod 16, a hanging portion 17, and a limit plate 18. DETAILED DESCRIPTION

[0020] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] like Figure 1 As shown, a hoisting device 10 capable of self-locking and unlocking in a nuclear environment of the present invention comprises: a hanging beam 11, a clamping mechanism 12 and a support base 14. The two clamping mechanisms 12 are used to clamp the forks 100 to replace the forks 100. The support base 14 is used to support the forks 100 from the bottom of the forks 100 to install the forks 100. The two clamping mechanisms 12 are respectively arranged at both ends of the hanging beam 11 so as to clamp the forks 100 from both ends of the forks 100 to stably carry the forks 100. The support base 14 is fixed to the forks 100 from the bottom of the forks 100 to support and install the forks 100.

[0022] Figure 2 and Figure 3 The internal structure of the hoisting device 10 capable of self-locking and unlocking in a nuclear environment is further disclosed, wherein the clamping mechanism 12 includes: a mounting seat 121, a movable clamping plate 122 and a guide shaft 123. The movable clamping plate 122 is used to clamp the fork 100 from both sides of the fork 100. The guide shaft 123 is used to guide the movable clamping plate 122 to move so as to clamp and release the fork 100. The guide shaft 123 is supported on the mounting seat 121, and the two movable clamping plates 122 are slidably sleeved on the outer periphery of the guide shaft 123. The mounting seat 121 is also provided with: two driving blocks 124, two driving gears 125 and two connecting members 126. The two driving blocks 124 are respectively slidably connected to the mounting seat 121, and are both formed with driving teeth 127. The two driving gears 125 are respectively rotatably connected to the mounting seat 121, and are respectively engaged with the two driving teeth 127. The two driving gears 125 are respectively connected to the crank connecting rod 133. One end of the crank of the crank connecting rod 133 is fixedly connected to the driving gear 125 and the other end is rotationally connected to one end of the connecting rod of the crank connecting rod 133. The other ends of the connecting rods of the two crank connecting rods 133 are rotationally connected to the connecting members 126. The two connecting members 126 are fixed to the two moving clamping plates 122 respectively.

[0023] Specifically, when the two driving blocks 124 are simultaneously moved along the mounting seat 121, the two driving blocks 124 drive the two driving gears 125 respectively through their respective driving teeth 127. The two driving gears 125 are fixed on the fixed shaft and are rotationally connected to the mounting seat 121 through the rotating shaft. Therefore, when the two driving gears 125 rotate, they will drive the crank and the connecting rod of the crank connecting rod 133 to rotate. The crank and the connecting rod of the crank connecting rod 133 rotate in the overlapping rotation directions. In this way, the connecting rods of the two crank connecting rods 133 will respectively drive the two moving clamps 122 to move in the direction of approaching each other along the guide shaft 123 through the connecting member 126. In other words, when the two driving blocks 124 are moved inward at the same time, the two moving clamps 122 will move until the two sides of the fork 100 are clamped. When the crank and the connecting rod of the crank connecting rod 133 rotate in the overlapping rotation direction until the two overlap, the crank and the connecting rod of the crank connecting rod 133 stop rotating under the balance of force and enter the locked state. At this time, the clamping mechanism 12 completes the clamping of the fork 100 and remains in the locked state. When the fork 100 is replaced and the clamping mechanism 12 needs to be unlocked, it is only necessary to push the two driving blocks 124 outward at the same time, and the crank and the connecting rod of the crank connecting rod 133 rotate under the action of external force until they return to the original unlocked rotation state.

[0024] The lower end of the movable clamping plate 122 is provided with a locking member, and the lower end of the fork 100 is provided with a locking portion for cooperating with the locking member to stably install the fork 100 on the hoisting device 10 that can be self-locked and unlocked in a nuclear environment. Here, the locking member can be a locking pin, and the locking portion can be a locking groove. The movable clamping plate 122 drives the locking pin to be inserted into the locking groove to fix the installation position of the fork 100.

[0025] The hoisting device 10 capable of self-locking and unlocking in the nuclear environment described above can be self-locking and unlocking. When replacing the fork 100, manual handling is not required, and the fork 100 can be stably carried and the installation position of the fork 100 can be accurately located.

[0026] As a specific implementation, the mounting seat 121 is also rotatably provided with two synchronous gears 128. The two synchronous gears 128 mesh with each other and respectively mesh with the two driving gears 125. Such an arrangement can ensure that the two driving gears 125 can rotate synchronously, so that the two moving clamping plates 122 can move synchronously, thereby ensuring the stability and reliability of the clamping operation.

[0027] As a specific implementation, the clamping mechanism 12 includes two guide shafts 123. The two guide shafts 123 are rotatably supported on the mounting seat 121 through the support seat 129. The two guide shafts 123 guide the movable clamping plate 122, and the structural stability is higher.

[0028] Furthermore, the support seat 129 is provided with a top screw 130. The top screw 130 is used to lock the guide shaft 123 to prevent the guide shaft 123 from moving.

[0029] As a specific implementation, the mounting seat 121 is provided with a reduction housing 131 formed with two guide grooves 1312. Two driving blocks 124 are respectively slidably connected to the two guide grooves 1312. The driving gear 125 and the synchronous gear 128 are both installed in the reduction housing 131. The crank connecting rod 133 is arranged on the outer side of the reduction housing 131 and is fixedly connected to the driving gear 125 through a fixed shaft.

[0030] Furthermore, a limit block 132 is also provided on the outer side of the reduction housing 131. The limit block 132 is used to limit the stroke of the crank connecting rod 133. The number of the limit blocks 132 is 2. The two limit blocks 132 respectively limit the stroke of the crank and the connecting rod of the crank connecting rod 133. In other words, through the limitation of the two limit blocks 132, the driving gear 125 can only drive the crank connecting rod 133 to rotate to the position where the crank and the connecting rod overlap. In this way, it can be ensured that the crank connecting rod 133 can quickly and accurately move to the locked state and remain in the locked state.

[0031] As a specific implementation, the mounting seat 121 is further provided with a limiting rod 15. The limiting rod 15 is used to limit the end position of the fork 100. When the fork 100 is installed, the limiting rod 15 limits the position of the upper end of the fork 100.

[0032] As a specific implementation, the suspension beam 11 is provided with a plurality of guide rods 16. The guide rods 16 are used to guide the moving clamping plate 122 of the clamping mechanism 12 to clamp the fork 100 therebetween quickly and accurately.

[0033] As a specific implementation, a hanging portion 17 is provided on the hanging beam 11. The hanging portion 17 is used for the hanging hook to hang the hanging beam 11 to transport the fork 100. The hanging portion 17 is directly lifted by the hook, avoiding the use of a sling, which can make the lifting more stable.

[0034] As a specific implementation, a limit plate 18 is provided at one end of the support base 14. The limit plate 18 is used to limit the installation position of the fork 100 to ensure the hoisting accuracy.

[0035] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the above embodiments do not limit the present invention in any form, and any technical solution obtained by equivalent replacement or equivalent transformation falls within the protection scope of the present invention.

Claims

1. A hoisting device capable of self-locking and unlocking in a nuclear environment, characterized in that: include: A lifting beam, two clamping mechanisms for clamping the forks, and a support base for supporting and mounting the forks; The two clamping mechanisms are respectively arranged at two ends of the suspension beam; The support base is fixed to the fork from the bottom of the fork; the clamping mechanism includes: a mounting seat, a movable clamping plate for clamping the fork, and a guide shaft for guiding the movable clamping plate; The guide shaft is supported on the mounting seat; the two movable clamps are slidably sleeved on the outer periphery of the guide shaft; the mounting seat is also provided with: two driving blocks, two driving gears and two connecting pieces; the two driving blocks are respectively slidably connected to the mounting seat and are formed with driving teeth; the two driving gears are respectively rotatably connected to the mounting seat and respectively mesh with the two driving teeth; the two driving gears are respectively connected to a crank connecting rod; one end of the crank of the crank connecting rod is fixedly connected to the driving gear and the other end is rotatably connected to one end of the connecting rod of the crank connecting rod; the other ends of the connecting rods of the two crank connecting rods are respectively rotatably connected to the connecting pieces; the two connecting pieces are respectively fixed to the two movable clamps.

2. The hoisting device capable of self-locking and unlocking in a nuclear environment according to claim 1, characterized in that: The mounting seat is also rotatably provided with two synchronous gears; the two synchronous gears are meshed with each other and respectively meshed with the two driving gears.

3. The hoisting device capable of self-locking and unlocking in a nuclear environment according to claim 1, characterized in that: The clamping mechanism comprises two guide shafts; the two guide shafts are rotatably supported on the mounting seat through a support seat.

4. The hoisting device capable of self-locking and unlocking in a nuclear environment according to claim 3, characterized in that: The support seat is provided with a top screw for locking the guide shaft.

5. The hoisting device capable of self-locking and unlocking in a nuclear environment according to claim 2, characterized in that: The mounting seat is provided with a reduction housing having two guide grooves; the two driving blocks are respectively slidably connected to the two guide grooves; the driving gear and the synchronous gear are both installed in the reduction housing; the crank connecting rod is arranged on the outside of the reduction housing and is fixedly connected to the driving gear through a fixed shaft.

6. The hoisting device capable of self-locking and unlocking in a nuclear environment according to claim 5, characterized in that: A limit block for limiting the stroke of the crank connecting rod is also provided on the outer side of the reduction housing.

7. The hoisting device capable of self-locking and unlocking in a nuclear environment according to claim 1, characterized in that: The mounting seat is also provided with a limiting rod for limiting the end position of the fork.

8. The hoisting device capable of self-locking and unlocking in a nuclear environment according to claim 1, characterized in that: The hanging beam is provided with a plurality of guide rods for guiding the movable clamping plate of the clamping mechanism to clamp the fork therebetween.

9. The hoisting device capable of self-locking and unlocking in a nuclear environment according to claim 1, characterized in that: The hanging beam is provided with a hanging part for a hook to hang the hanging beam.

10. The hoisting device capable of self-locking and unlocking in a nuclear environment according to claim 1, characterized in that: A limiting plate for limiting the installation position of the fork is provided at one end of the supporting base.

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