Bundled paper pulp hoisting tool

Abstract

The utility model provides a bulk bundle paper pulp hoisting tool which comprises two clamping frames, wedge-shaped blocks are arranged on the inner sides of the lower ends of the clamping frames, a hoisting block and a linkage structure connected with the hoisting block are arranged between the two clamping frames, the two ends of the linkage structure are connected with the two clamping frames respectively, a hoisting hole is formed in the hoisting block, and a hoisting hook can be hooked into the hoisting hole. When the lifting hook hooks the lifting block to move upwards through the lifting hole, the lifting block drives the linkage structure to rotate so that the lower ends of the two clamping frames can get close to each other. When the lower ends of the two clamping frames get close to each other, the two wedge-shaped blocks at the lower ends of the two clamping frames also get close to each other so as to clamp the scattered bundle paper pulp; during use, the lifting hook lifts the lifting block, and the wedge-shaped block at the lower end of the clamping frame is driven by the linkage structure to contract to tightly hold the bottom of scattered paper pulp, so that the whole scattered paper pulp is lifted up.

Description

Technical Field

[0001] The utility model relates to the field of paper pulp transportation auxiliary equipment, in particular to a loose bale paper pulp lifting tool. Background Art

[0002] Currently, when loose bales of pulp are hoisted, tools such as hooks and cranes are generally used. First, the bales are tied and secured to prevent them from loosening or falling during the hoisting process. The hooks are then securely attached to the binding points, and a trial lift is performed. Once the lifting is confirmed, the bales are officially hoisted. During the hoisting process, stability must be maintained to avoid sudden starts and stops or violent shaking. However, the loose bale hoisting process involves numerous operational steps and risk factors, such as insecure binding, loosening or falling of the pulp during the hoisting process, which can all lead to safety accidents. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the utility model proposes a loose-bundle pulp lifting tool, which can avoid the occurrence of loose binding and fixation, pulp scattering or falling during lifting, etc., thereby reducing the occurrence of safety accidents.

[0004] The technical solution of the present utility model is achieved as follows:

[0005] A loose bale pulp lifting tool includes two clamping frames, each of which is provided with a wedge-shaped block on the inner side of the lower end of the clamping frames, a lifting block and a linkage structure connected to the lifting block provided between the two clamping frames, the two ends of the linkage structure being respectively connected to the two clamping frames, and a lifting hole for a hook to be hooked into the lifting block. When the hook hooks the lifting block through the lifting hole and moves it upward, the lifting block drives the linkage structure to rotate so that the lower ends of the two clamping frames are close to each other.

[0006] Preferably, the linkage structure includes a main frame and two sets of movable brackets, and the two sets of movable brackets are respectively arranged on both sides of the main frame;

[0007] The main frame includes a bottom frame, a support frame arranged on the bottom frame, and two vertical plates arranged on the support frame. The vertical plates are provided with vertical slides. The lifting block is located between the two vertical plates. The bottom of the lifting block is provided with a linkage shaft. The two ends of the linkage shaft extend into the vertical slides of the two vertical plates respectively.

[0008] The movable bracket includes a first boom, a second boom, a third boom, and a fourth boom. The first boom and the second boom are symmetrically arranged on both sides of the vertical slide. The upper end of the first boom and the upper end of the second boom are both rotatably connected to the end of the linkage shaft. The lower end of the first boom is rotatably connected to the upper end of the third boom, and the lower end of the second boom is rotatably connected to the upper end of the fourth boom. The third boom and the fourth boom are cross-arranged and the middle part of the third boom is hinged to the middle part of the fourth boom. The lower end of the third boom and the lower end of the fourth boom are rotatably connected to the two clamping frames respectively.

[0009] Preferably, the upper ends of the two clamping frames are provided with connecting blocks, the interior of the bottom frame is provided with guide rods, the connecting blocks are slidably set on the guide rods, and the lower ends of the third boom and the fourth boom are respectively rotated to connect the two connecting blocks.

[0010] Preferably, a spring is provided between the connecting blocks of the two clamping frames, and the spring is sleeved on the middle part of the guide rod.

[0011] Preferably, the linkage structure also includes a pulley cable assembly, the pulley cable assembly includes a cable, a first pulley, two second pulleys, two third pulleys and two fixed rings, the first pulley is sleeved on the end of the linkage shaft, one of the second pulleys is arranged at the connection between the lower end of the first boom and the upper end of the third boom, the other second pulley is arranged at the connection between the lower end of the second boom and the upper end of the fourth boom, the two third pulleys are respectively arranged on the upper outer side of the two clamping frames, and the two fixed rings are respectively arranged on the lower outer side of the two clamping frames, one end of the cable is fixed to one of the fixed rings, and the other end is fixed to the other fixed ring after passing through one of the third pulleys, one of the second pulleys, the first pulley, the other second pulley and the other third pulley in sequence.

[0012] Preferably, a fourth pulley is provided on the outer side of the middle portion of each of the two clamping frames, a fifth pulley is provided on the outer side of the lower portion of each of the two clamping frames, the fifth pulley is located above the fixing ring, and two sixth pulleys are provided on the bottom frame;

[0013] One end of the cable is fixed to one of the fixed rings, and the other end is passed around the outside of one of the fifth pulleys, the inside of one of the fourth pulleys, the outside of one of the third pulleys, the outside of one of the sixth pulleys, the outside of one of the second pulleys, the upper end of the first pulley, the outside of another second pulley, the outside of another sixth pulley, the outside of another third pulley, the inside of another fourth pulley and the outside of another fifth pulley, and then is fixed to another fixed ring.

[0014] Preferably, the pulley cable assembly further includes two seventh pulleys, which are respectively arranged below the two second pulleys through connecting rods, one end of the cable is fixed to one of the fixing rings, and the other end is successively passed around the outer side of one of the third pulleys, the upper end of one of the second pulleys, the lower end of one of the seventh pulleys, the upper end of the first pulley, the lower end of the other seventh pulley, the upper end of the other second pulley and the outer side of the other third pulley before being fixed to another fixing ring.

[0015] Preferably, the linkage structure includes two sliders and two telescopic rods, the two sliders are hinged on both sides of the lifting block, one end of one telescopic rod is fixedly connected to the top of one of the clamping frames, and the other end is telescopically connected to one of the sliders, and one end of the other telescopic rod is fixedly connected to the top of the other clamping frame, and the other end is telescopically connected to the other slider;

[0016] It also includes a connecting rod, one end of the connecting rod is hinged to the middle part of one of the clamping frames, and the other end of the connecting rod is hinged to the middle part of the other clamping frame.

[0017] Preferably, the linkage structure also includes two insertion rods, and a limiting groove is provided at one end of the telescopic rod close to the slider. One of the insertion rods passes through the limiting groove of one of the sliders and one of the telescopic rods in sequence and is fixed to one side of the lifting block, and the other insertion rod passes through the limiting groove of the other slider and the other telescopic rod in sequence and is fixed to the other side of the lifting block.

[0018] Preferably, a pretensioner is provided between the middle and lower parts of the two clamping frames.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] The loose bale pulp lifting tool includes two clamping frames, each of which is provided with a wedge-shaped block on the inner side of the lower end of the clamping frames. A lifting block and a linkage structure connected to the lifting block are provided between the two clamping frames. When the lifting hook hooks the lifting block through the lifting hole of the lifting block and moves it upward, the lifting block drives the linkage structure to rotate so that the lower ends of the two clamping frames are close to each other. When the lower ends of the two clamping frames are close to each other, the two wedge-shaped blocks at the lower ends of the two clamping frames are also close to each other to clamp the loose bale pulp. When in use, the hook lifts the lifting block, and at this time the wedge-shaped block at the lower end of the clamping frame is driven by the linkage structure to shrink and tighten the bottom of the loose bale pulp, thereby lifting the entire loose bale pulp. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of the first embodiment of the present utility model;

[0022] Figure 2 This is a front view of the first embodiment of the present utility model;

[0023] Figure 3 This is a schematic diagram of the three-dimensional structure of the main frame in Example 1 of the present utility model;

[0024] Figure 4 This is a schematic diagram of the three-dimensional structure of the lifting block in Example 1 of the present utility model;

[0025] Figure 5 This is a schematic diagram of the three-dimensional structure of the clamping frame in the first embodiment of the present utility model;

[0026] Figure 6 for Figure 1 Schematic diagram of the enlarged structure at A in the middle;

[0027] Figure 7 This is a schematic diagram of the three-dimensional structure of the second embodiment of the present utility model;

[0028] Figure 8 This is a schematic diagram of the three-dimensional structure of the lifting block and the linkage structure in the second embodiment of the present utility model;

[0029] Figure 9 This is a schematic diagram of the three-dimensional structure of the telescopic rod in the second embodiment of the present utility model.

[0030] Figure ID:

[0031] 1- Clamping frame; 11- Wedge block; 12- Connecting block; 2- Lifting block; 21- Lifting hole; 22- Linkage shaft; 3- Linkage structure; 31- Main frame; 311- Bottom frame; 312- Support frame; 313- Vertical plate; 3131- Vertical slide; 314- Guide rod; 32- Movable bracket; 321- First boom; 322- Second boom; 323- Third boom; 324- Fourth boom; 33- Pulley cable assembly; 33 1-cable; 332-first pulley; 333-second pulley; 334-third pulley; 335-fixing ring; 336-fourth pulley; 337-fifth pulley; 338-sixth pulley; 339-seventh pulley; 3391-connecting rod; 34-slider; 35-telescopic rod; 351-limiting groove; 36-connecting rod; 37-insertion rod; 4-spring; 5-pretensioner; 51-fixing ring; 52-chain; 53-hand hoist. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be a communication between the internal parts of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] Example 1

[0035] See also Figure 1 This embodiment provides a loose-bale pulp lifting tool, comprising two clamping frames 1, each with a wedge-shaped block 11 disposed on the inner side of the lower end of each clamping frame 1. A lifting block 2 and a linkage structure 3 connected to the lifting block 2 are disposed between the two clamping frames 1. The linkage structure 3 is connected to the two clamping frames 1 at both ends. The lifting block 2 is provided with a lifting hole 21 for hooking into. When the hook hooks the lifting block 2 through the lifting hole 21 and moves it upward, the lifting block 2 drives the linkage structure 3 to rotate, causing the lower ends of the two clamping frames 1 to approach each other. When the lower ends of the two clamping frames 1 approach each other, the two wedge-shaped blocks 11 at the lower ends of the two clamping frames 1 also approach each other, thereby clamping the loose-bale pulp. The hook is not shown in the figure and represents prior art. The provision of the lifting hole 21 facilitates hooking into the hook. When in use, the hook lifts the lifting block 2, and at this time the linkage structure 3 drives the wedge block 11 at the lower end of the clamping frame 1 to shrink and tighten the bottom of the loose bale pulp, thereby lifting the entire loose bale pulp. Before lifting, the lifting tool is covered on the stack, and the on-site operator slightly buckles the wedge block 11 into the bottom of the loose bale pulp, while squeezing the bottom of the loose bale pulp, and then uses the hook to lift the lifting hole 21 on the lifting block 2 to achieve the purpose of tightening the two wedge blocks 11 and thus lifting the loose bale pulp.

[0036] For details, see Figures 1 to 6 , the linkage structure 3 includes a main frame 31 and two sets of movable brackets 32, and the two sets of movable brackets 32 are respectively arranged on both sides of the main frame 31;

[0037] The main frame 31 includes a bottom frame 311, a support frame 312 provided on the bottom frame 311, and two vertical plates 313 provided on the support frame 312. The vertical plates 313 are provided with vertical slide grooves 3131. The lifting block 2 is located between the two vertical plates 313. A linkage shaft 22 is provided at the bottom of the lifting block 2. The two ends of the linkage shaft 22 respectively extend into the vertical slide grooves 3131 of the two vertical plates 313. The two ends of the linkage shaft 22 can slide along the vertical slide grooves 3131 of the two vertical plates 313. The vertical slide grooves 3131 serve as sliding guides for the linkage shaft 22.

[0038] like Figure 2 and Figure 6 The movable bracket 32 includes a first arm 321, a second arm 322, a third arm 323, and a fourth arm 324. The first arm 321 and the second arm 322 are symmetrically arranged on both sides of the vertical slide groove 3131. The upper end of the first arm 321 and the upper end of the second arm 322 are rotatably connected to the end of the linkage shaft 22. The lower end of the first arm 321 is rotatably connected to the upper end of the third arm 323, and the lower end of the second arm 322 is rotatably connected to the upper end of the fourth arm 324. The third arm 323 and the fourth arm 324 are cross-arranged and the middle part of the third arm 323 is hinged to the middle part of the fourth arm 324. The lower end of the third arm 323 and the lower end of the fourth arm 324 are rotatably connected to the two clamping frames 1 respectively. When the hook lifts the lifting block 2 upward, the linkage shaft 22 moves upward with the lifting block 2, and the movable bracket 32 contracts. Specifically, the lifting block 2 moves upward, driving the upper end of the first lifting arm 321 and the upper end of the second lifting arm 322 to move upward. At this time, the lower end of the first lifting arm 321 and the lower end of the second lifting arm 322 approach each other. At the same time, the upper end of the third lifting arm 323 and the upper end of the fourth lifting arm 324 move upward and approach each other, so that the lower end of the third lifting arm 323 and the lower end of the fourth lifting arm 324 drive the two clamping frames 1 to approach each other, and then the two wedge blocks 11 contract to tightly hold the bottom of the loose bale pulp, thereby lifting the entire loose bale pulp.

[0039] In this embodiment, four clamping frames 1 are provided, symmetrically arranged in pairs on the left and right sides of the main frame 31. Two sets of movable brackets 32 are provided, one on the front and the other on the back of the main frame 3. Each set of movable brackets 32 drives the movement of two clamping frames 1. In practice, the two clamping frames 1 on the same side can be integrally formed to form two large clamping frames 1.

[0040] Preferably, see Figure 2 、 Figure 5 and Figure 6The upper ends of the two clamping frames 1 are each provided with a connecting block 12. A guide rod 314 is provided inside the bottom frame 311. The connecting block 12 is slidably mounted on the guide rod 314. The lower ends of the third and fourth suspension arms 323 and 324 are rotatably connected to the two connecting blocks 12. The connecting blocks 12 are used to connect the two clamping frames 1 to the third and fourth suspension arms 323 and 324, respectively. The connecting blocks 12 slide on the guide rod 314, limiting the displacement of the two connecting blocks 12 and restricting them to horizontal movement. This prevents the two clamping frames 1 from offsetting and improves the stability of the two clamping frames 1 during movement.

[0041] Preferably, see Figure 1 and Figure 6 A spring 4 is provided between the connecting blocks 12 of the two clamping frames 1 and is sleeved onto the middle portion of the guide rod 314. The provision of the spring 4 facilitates the resetting of the two connecting blocks 12. After the sling has lifted the loose bale of pulp to the designated location, the on-site operator pulls the hook out of the lifting hole 21. Under the action of the spring 4 and gravity, the two connecting blocks 12 are reset and the two clamping frames 1 move away from each other. The lifting block 2 moves downward and resets, and the first, second, third, and fourth lifting arms 321, 322, 323, and 324 are all expanded and reset.

[0042] Preferably, the linkage structure 3 further includes a pulley cable assembly 33, which can enhance the contraction capability of the entire lifting tool, coordinate the contraction force, and balance the force. For details, see Figure 1 、 Figure 2 and Figure 6 The pulley cable assembly 33 includes a cable 331, a first pulley 332, two second pulleys 333, two third pulleys 334 and two fixing rings 335. The first pulley 332 is sleeved on the end of the linkage shaft 22, one of the second pulleys 333 is arranged at the connection between the lower end of the first lifting arm 321 and the upper end of the third lifting arm 323, and the other second pulley 333 is arranged at the connection between the lower end of the second lifting arm 322 and the upper end of the fourth lifting arm 324. The two third pulleys 334 are respectively arranged on the upper outer side of the two clamping frames 1, and the two fixing rings 335 are respectively arranged on the lower outer side of the two clamping frames 1. One end of the cable 331 is fixed to one of the fixing rings 335, and the other end is fixed to the other fixing ring 335 after passing through one of the third pulleys 334, one of the second pulleys 333, the first pulley 332, the other second pulley 333 and the other third pulley 334 in sequence. When the hook lifts the lifting block 2 upwards and drives the movable bracket 32 to retract, the first pulley 332 moves upward, the two second pulleys 333 approach each other, and the two third pulleys 334 also approach each other, and the cable 331 on the pulley contracts accordingly, thereby enhancing the retraction capacity of the entire lifting tool.

[0043] Preferably, a fourth pulley 336 is provided on the outer side of the middle portion of the two clamping frames 1, a fifth pulley 337 is provided on the outer side of the lower portion of the two clamping frames 1, the fifth pulley 337 is located above the fixing ring 335, and two sixth pulleys 338 are provided on the bottom frame 311;

[0044] One end of the cable 331 is fixed to one of the fixing rings 335, and the other end passes through the outside of one of the fifth pulleys 337, the inside of one of the fourth pulleys 336, the outside of one of the third pulleys 334, the outside of one of the sixth pulleys 338, the outside of one of the second pulleys 333, the upper end of the first pulley 332, the outside of the other second pulley 333, the outside of the other sixth pulley 338, the outside of the other third pulley 334, the inside of the other fourth pulley 336, and the outside of the other fifth pulley 337, before being fixed to another fixing ring 335. The arrangement of the fourth and fifth pulleys 336 and 337 prevents the cable 331 from becoming loose between the third pulley 334 and the fixing ring 335, and the arrangement of the sixth pulley 338 prevents the cable 331 from contacting the bottom frame 311, thereby preventing wear and tear caused by long-term contact that would otherwise affect the service life of the cable 331.

[0045] Preferably, the pulley and cable assembly 33 further includes two seventh pulleys 339, which are respectively arranged below the two second pulleys 333 via connecting rods 3391. One end of the cable 331 is fixed to one of the fixing rings 335, and the other end is passed around the outside of one of the third pulleys 334, the upper end of one of the second pulleys 333, the lower end of one of the seventh pulleys 339, the upper end of the first pulley 332, the lower end of the other seventh pulley 339, the upper end of the other second pulley 333, and the outside of the other third pulley 334, before being fixed to the other fixing ring 335. The provision of the seventh pulley 339 helps prevent the cable 331 from loosening between the first pulley 332 and the second pulley 333, thereby ensuring the contraction capacity of the pulley and cable assembly 33.

[0046] Example 2

[0047] See also Figures 7 to 9 The present embodiment provides a loose bale pulp lifting tool, comprising two clamping frames 1, each of which is provided with a wedge-shaped block 11 on the inner side of the lower end of the clamping frames 1, a lifting block 2 and a linkage structure 3 connected to the lifting block 2 are provided between the two clamping frames 1, the two ends of the linkage structure 3 are respectively connected to the two clamping frames 1, and the lifting block 2 is provided with a lifting hole 21 for a hook to be hooked into. When the hook hooks the lifting block 2 through the lifting hole 21 and moves upward, the lifting block 2 drives the linkage structure 3 to rotate so that the lower ends of the two clamping frames 1 are close to each other.

[0048] Specifically, the linkage structure 3 includes two sliders 34 and two telescopic rods 35. The two sliders 34 are hinged on either side of the lifting block 2. One end of one telescopic rod 35 is fixedly connected to the top of one of the clamping frames 1 and its other end is telescopically connected to one of the sliders 34. The other telescopic rod 35 has one end fixedly connected to the top of the other clamping frame 1 and its other end is telescopically connected to the other slider 34. The linkage structure 3 also includes a connecting rod 36, one end of which is hinged to the middle of one of the clamping frames 1 and its other end is hinged to the middle of the other clamping frame 1. The two ends of the connecting rod 36 serve as fulcrums for the rotation of the two clamping frames 1, utilizing the principle of leverage to retract the lower ends of the two clamping frames 1. When the hook lifts the lifting block 2 upward, the two sliders 34 move upward with the lifting block 2. Under the action of gravity, the telescopic rods 35 move downward relative to the sliders 34. Simultaneously, the ends of the two telescopic rods 35 connected to the clamping frames 1 move away from each other, pushing the upper ends of the two clamping frames 1 apart. At this point, with the connecting rod 36 acting as a lever fulcrum, the lower ends of the two clamping frames 1 move toward each other, causing the two wedge-shaped blocks 11 to contract and enclose the bottom of the loose bale of pulp, thereby lifting the entire bale. In this embodiment, two sets of linkage structures 3 are provided, one on the front and rear sides of the two clamping frames 1, making lifting more stable.

[0049] Preferably, the linkage structure 3 further includes two insertion rods 37. A limiting slot 351 is provided at one end of the telescopic rod 35 near the slider 34. One of the insertion rods 37 passes through the limiting slot 351 of one slider 34 and one telescopic rod 35 in sequence, and is then fixed to one side of the lifting block 2. The other insertion rod 37 passes through the limiting slot 351 of the other slider 34 and the other telescopic rod 35 in sequence, and is then fixed to the other side of the lifting block 2. The insertion rod 37 is used to connect the slider 34, the telescopic rod 35, and the lifting block 2, allowing the slider 34 to rotate relative to the lifting block 2 and also allowing the slider 34 to slide relative to the telescopic rod 35.

[0050] Preferably, a pre-tensioner 5 is provided between the middle and lower parts of the two clamping frames 1. Before lifting, the lifting tool is first covered on the stack, and the on-site operator uses the pre-tensioner 5 to make the two wedge blocks 11 slightly buckle into the bottom of the loose bale pulp, while squeezing the bottom of the loose bale pulp, and then uses the hook to lift the lifting block 2 to achieve the purpose of tightening the wedge block 11 to lift the loose bale pulp.

[0051] Specifically, the pretensioner 5 includes two fixed rings 51, two chains 52, and a hand hoist 53. The two fixed rings 51 are respectively fixed to the lower ends of the two clamping frames 1. The ends of the hand hoist 53 are connected to the two fixed rings 51 through the chains 52. During use, the tension of the chain 52 is adjusted through the adjustment mechanism of the hand hoist 53 (such as a knob, handle, etc.) to achieve the desired preload force. Pay attention to the reaction of the fastened object to ensure that the preload force is moderate, neither too tight nor too loose. The hand hoist is existing technology and will not be described in detail again.

[0052] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A loose bale pulp lifting tool, characterized in that: It includes two clamping frames, each of which is provided with a wedge-shaped block on the inner side of the lower end of the clamping frames, a lifting block and a linkage structure connected to the lifting block are provided between the two clamping frames, the two ends of the linkage structure are respectively connected to the two clamping frames, and the lifting block is provided with a lifting hole for the hook to be hooked in. When the hook hooks the lifting block through the lifting hole and moves upward, the lifting block drives the linkage structure to rotate so that the lower ends of the two clamping frames are close to each other.

2. The loose bale pulp lifting tool according to claim 1, characterized in that: The linkage structure includes a main frame and two sets of movable brackets, and the two sets of movable brackets are respectively arranged on both sides of the main frame; The main frame includes a bottom frame, a support frame arranged on the bottom frame, and two vertical plates arranged on the support frame, the vertical plates are provided with vertical slide grooves, the lifting block is located between the two vertical plates, and a linkage shaft is provided at the bottom of the lifting block, and the two ends of the linkage shaft respectively extend into the vertical slide grooves of the two vertical plates; The movable bracket includes a first boom, a second boom, a third boom, and a fourth boom. The first boom and the second boom are symmetrically arranged on both sides of the vertical slide groove. The upper end of the first boom and the upper end of the second boom are both rotatably connected to the end of the linkage shaft. The lower end of the first boom is rotatably connected to the upper end of the third boom, and the lower end of the second boom is rotatably connected to the upper end of the fourth boom. The third boom and the fourth boom are cross-arranged and the middle part of the third boom is hinged to the middle part of the fourth boom. The lower end of the third boom and the lower end of the fourth boom are rotatably connected to the two clamping frames respectively.

3. The loose bale pulp lifting tool according to claim 2, characterized in that: The upper ends of the two clamping frames are each provided with a connecting block, and a guide rod is provided inside the bottom frame. The connecting block is slidably set on the guide rod, and the lower end of the third boom and the lower end of the fourth boom are respectively rotated to connect the two connecting blocks.

4. The loose bale pulp lifting tool according to claim 3, characterized in that: A spring is provided between the connecting blocks of the two clamping frames, and the spring is sleeved on the middle part of the guide rod.

5. The loose bale pulp lifting tool according to claim 2, characterized in that: The linkage structure also includes a pulley cable assembly, and the pulley cable assembly includes a cable, a first pulley, two second pulleys, two third pulleys and two fixing rings, the first pulley is sleeved on the end of the linkage shaft, one of the second pulleys is arranged at the connection between the lower end of the first boom and the upper end of the third boom, the other second pulley is arranged at the connection between the lower end of the second boom and the upper end of the fourth boom, the two third pulleys are respectively arranged on the upper outer side of the two clamping frames, and the two fixing rings are respectively arranged on the lower outer side of the two clamping frames, one end of the cable is fixed to one of the fixing rings, and the other end is fixed to the other fixing ring after passing through one of the third pulleys, one of the second pulleys, the first pulley, the other second pulley and the other third pulley in sequence.

6. The loose bale pulp lifting tool according to claim 5, characterized in that: A fourth pulley is provided on the outer side of the middle portion of each of the two clamping frames, a fifth pulley is provided on the outer side of the lower portion of each of the two clamping frames, the fifth pulley is located above the fixing ring, and two sixth pulleys are provided on the bottom frame; One end of the cable is fixed to one of the fixing rings, and the other end is passed around the outside of one of the fifth pulleys, the inside of one of the fourth pulleys, the outside of one of the third pulleys, the outside of one of the sixth pulleys, the outside of one of the second pulleys, the upper end of the first pulley, the outside of another second pulley, the outside of another sixth pulley, the outside of another third pulley, the inside of another fourth pulley and the outside of another fifth pulley in sequence, and then is fixed to another fixing ring.

7. The loose bale pulp lifting tool according to claim 5, characterized in that: The pulley cable assembly also includes two seventh pulleys, which are respectively arranged below the two second pulleys through connecting rods. One end of the cable is fixed to one of the fixing rings, and the other end is passed around the outside of one of the third pulleys, the upper end of one of the second pulleys, the lower end of one of the seventh pulleys, the upper end of the first pulley, the lower end of the other seventh pulley, the upper end of the other second pulley and the outside of the other third pulley in sequence, and then fixed to the other fixing ring.

8. The loose bale pulp lifting tool according to claim 1, characterized in that: The linkage structure includes two sliders and two telescopic rods, the two sliders are hinged on both sides of the lifting block, one end of one of the telescopic rods is fixedly connected to the top of one of the clamping frames, and the other end is telescopically connected to one of the sliders, and one end of the other telescopic rod is fixedly connected to the top of the other clamping frame, and the other end is telescopically connected to the other slider; It also includes a connecting rod, one end of which is hinged to the middle part of one of the clamping frames, and the other end of which is hinged to the middle part of the other clamping frame.

9. The loose bale pulp lifting tool according to claim 8, characterized in that: The linkage structure also includes two insertion rods, and a limiting groove is provided at one end of the telescopic rod close to the slider. One of the insertion rods passes through the limiting groove of one of the sliders and one of the telescopic rods in sequence and is then fixed to one side of the lifting block, and the other insertion rod passes through the limiting groove of another slider and another telescopic rod in sequence and is then fixed to the other side of the lifting block.

10. The loose bale pulp lifting tool according to any one of claims 1 to 9, characterized in that: A preload device is provided between the middle and lower parts of the two clamping frames.

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