Limb binding device for animal experiment

Abstract

The invention relates to the technical field of animal experiment constraining, and discloses an animal experiment limb constraining device which comprises an animal limb placing plate, a supporting structure, a limb middle section constraining mechanism, a limb lower section constraining mechanism and a limb upper section constraining mechanism. The limb middle section constraining mechanism comprises a first supporting plate, a first fixing base, a second fixing base, a second supporting plate, a limiting frame, a transverse moving adjusting plate and a pressing locking structure and is used for constraining the limb middle section. The limb lower section constraining mechanism is arranged at the lower end of the limb middle section constraining mechanism and used for constraining the limb lower section; the limb upper section binding mechanism comprises a first support, a second support, a first iron chain, a second iron chain and a fixing ring and is used for binding the limb upper section. Through the combination of the limb middle section binding mechanism, the limb lower section binding mechanism and the limb upper section binding mechanism, comprehensive and sectional binding of the limb of the animal is realized, the accuracy of the experiment is ensured, and the pressure and discomfort of the animal caused by binding are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of animal experiment restraint, in particular to a limb restraint device for animal experiments. Background Art

[0002] Animal experiments refer to scientific research conducted in laboratories using animals in order to gain new knowledge about biology, medicine, etc. or to solve specific problems. During animal experiments, the animals need to be restrained and tied up to facilitate the operation during the experiment.

[0003] Currently, animal restraints are difficult to adjust to the size of the animals' limbs during animal experiments, making them difficult to adapt to animals of different sizes. This makes it easy for animals to break free during experiments, and existing restraint systems can cause discomfort and discomfort to the animals. Loosening or falling restraints can also pose unexpected risks. Therefore, a corresponding technical solution is needed to address this issue. Summary of the Invention

[0004] (1) Technical problems solved

[0005] In view of the deficiencies of the prior art, the present invention provides a limb restraint device for animal experiments, which solves the technical problems thereof.

[0006] (2) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: an animal experiment limb restraint device, comprising an animal limb placement board, a support structure, a mid-limb restraint mechanism, a lower limb restraint mechanism, and an upper limb restraint mechanism, wherein a rubber gasket is bonded to the middle of the top of the animal limb placement board, and the support structure is installed and distributed at the bottom of the animal limb placement board;

[0008] The mid-limb restraint mechanism includes a support plate 1, a fixing seat 1, a fixing seat 2, a support plate 2, a limiting frame, a transverse movement adjustment plate and a pressing and locking structure, wherein the support plate 1 and the support plate 2 are fixedly distributed on the top of the animal limb placement plate, the fixing seat 1 is fixedly arranged on the inner upper end of the support plate 1, the fixing seat 2 is arranged on the inner upper end of the support plate 2, the limiting frame is fixedly arranged on the outer upper end of the support plate 2, the transverse movement adjustment plate passes through the support plate 2, the limiting frame is fixedly connected to the outer side of the fixing seat 2, the pressing and locking structure passes through the upper end of the limiting frame and is connected to the transverse movement adjustment plate, and the fixing seat 1 and the fixing seat 2 move relative to each other to restrain the mid-limb;

[0009] The lower limb restraint mechanism is arranged at the lower end of the middle limb restraint mechanism, and the lower limb restraint mechanism includes an elastic clasp, an inner liner, a rope, a pad and a support block, the rope is fixed to the outer ends of the pad and the support block respectively, the elastic clasp is fixed to the inner end of the support block, the inner liner is fixed to the inner end of the pad, and the elastic clasp and the inner liner are clamped together to restrain the lower limb;

[0010] The upper limb restraint mechanism includes a bracket 1, a bracket 2, an iron chain 1, an iron chain 2 and a fixed ring. The bracket 1 and the bracket 2 are respectively fixed on the top two ends of the animal limb placement plate, and the iron chain 1 and the iron chain 2 are respectively slidably connected to the inside of the bracket 1 and the bracket 2. The fixed ring is fixed to the end of the iron chain 1, and the iron chain 2 is sleeved inside the fixed ring for restraining the upper limb.

[0011] The cam is fixed to the bottom of the lower frame, and the cam is fixed to the bottom of the lower frame by the hydraulic cylinder and the hydraulic column.

[0012] Preferably, a groove a is provided on the inner side of the fixing seat one, and a card slot a is provided at the upper and lower ends of the groove a; a groove b is provided on the inner side of the fixing seat two, and a card slot b is provided in the horizontal middle of the groove b; the groove a and the groove b are directly used to clamp the animal limbs, and the card slot a and the card slot b are used to limit the clamping connection between the fixing seat one and the fixing seat two, and to reduce the inner diameter of the groove a and the groove b.

[0013] Preferably, a movable groove 1 is provided near the upper end of the inner part of the support plate 2, the transverse adjustment plate is connected through the movable groove 1 and the limit frame, the outer end of the transverse adjustment plate is fixedly provided with a lifting device, the upper end of the transverse adjustment plate is provided with tooth grooves, the upper end of the limit frame is provided with a movable groove 2, the pressing and locking structure includes a pressing plate, the pressing plate is connected through the movable groove 2, the bottom of the pressing plate is fixed with tooth buckles, and the tooth buckles are locked at the tooth grooves; the movable groove 1 and the limit frame are both used for movably adjusting the transverse adjustment plate, the transverse adjustment plate is used to support the transverse movement of the fixed seat 2, the pulling device is used for hand-held operation of the transverse adjustment plate, the movable groove 2 is used to limit the movably adjusting pressing plate, the pressing plate is used to adjust up and down or lock the transverse adjustment plate, the tooth groove is used to accurately engage and lock the tooth buckle to prevent movement after locking.

[0014] Preferably, the pressing locking structure also includes a fixing frame, an adjusting rod and a baffle, the adjusting rod is fixedly arranged in the middle of the top of the pressing plate, the fixing frame is fixedly arranged in an N-shaped structure at the upper end of the limit frame, a movable hole α is opened in the middle of the fixing frame, the adjusting rod passes through the movable hole α and is connected to the end plate α, the upper end of the end plate α is fixedly provided with a pull ring α, a spring rod α is fixed between the bottom of the movable hole α and the top of the pressing plate, and the spring rod α is located outside the adjusting rod; the end plate α and the pull ring α are used for hand-held stretching operation of the adjusting rod, the movable hole α is used to limit the movable adjusting rod, the adjusting rod is used to drive the pressing plate to adjust up and down, and the spring rod α is used for elastic compression adjustment, so that the stretching is more stable; limiting grooves are provided at the front and rear ends of the fixing frame, and limiting rods with an L-shaped rod structure are fixed at both ends of the top of the pressing plate, and the limiting rod passes through the limiting The limit block with the L-shaped plate structure is used to limit to the inside of the slide groove one, further stabilizing the auxiliary pressing plate to adjust up and down.

[0015] Preferably, both ends of the elastic snap ring are fixed with fixing blocks, the outer end of the fixing block is fixed with a telescopic cylinder b, the outer end of the telescopic cylinder b is connected to the telescopic rod b, the outer end of the telescopic rod b is fixed with a fixed ball head b, the outer end of the fixed ball head b is movably connected to a positioning block b, the outer end of the positioning block b is fixed with an installation positioning frame, the middle of the installation positioning frame is connected by a locking bolt through a thread, the bottom of the locking bolt is connected by a locking nut through a thread, and the locking nut is arranged at the bottom of the installation positioning frame; the elastic snap ring can elastically adjust the opening and closing degree, the fixing block is used to support the installation structure toward the outer end, the telescopic cylinder b and the telescopic rod b are used to telescopically adjust the spacing of the installation positioning frame, the fixed ball head b is embedded in the positioning block b for universal movability adjustment of the angle of the installation positioning frame, which is convenient for the corresponding installation of the docking plate, and the locking bolt and locking nut are used to pass through the installation slot for locking the installation.

[0016] Preferably, the front and rear ends of the outer side of the pad are fixed with a support plate 1, the outer end of the support plate 1 is fixed with a telescopic cylinder a, the outer end of the telescopic cylinder a is connected to the telescopic rod a, the outer end of the telescopic rod a is fixed with a fixed ball head a, the outer end of the fixed ball head a is movably connected to a positioning block a, the outer end of the positioning block a is fixed with a support plate 2, the inner end of the support plate 2 is fixed with an extension plate, the inner end of the extension plate is fixed with a plug plate, and a mounting slot is provided in the middle of the plug plate; the telescopic cylinder a and the telescopic rod a are used to telescopically adjust the distance between the extension plate and the plug plate, the fixed ball head a is embedded in the positioning block a and can universally adjust the angle of the extension plate, the plug plate and the mounting slot are designed to be easy to install and disassemble, and can be docked and installed at any angle, which not only facilitates the user's preparation work before and after the experiment, but also helps to reduce the maintenance cost and difficulty of use of the device.

[0017] Preferably, a cavity is provided inside the bracket one and the bracket two, and a slide groove two is provided at the front and rear ends of the cavity, and jacks are provided at the rear end of the slide groove two, and a positioning rod is slidably connected to the inside of the slide groove two, and the iron chain one and the iron chain two are respectively sleeved on the outside of the positioning rod, and the iron chain one and the iron chain two are both composed of a circular ring and an elliptical ring, and a connecting rod is fixed on the upper end of the iron chain one, and the fixing ring is fixed on the upper end of the connecting rod; an empty groove is provided at the inner outer end of the fixing ring, and the thickness of the empty groove is greater than the thickness of the iron chain one and the iron chain two; the positioning rod is located inside the slide groove two to adjust the height up and down, and the iron chain one and the iron chain two composed of a circular ring and an elliptical ring are sturdy and durable, and the empty groove is used to put in the iron chain two, and the iron chain two is located inside the fixing ring to restrain and position the animal's limbs.

[0018] Preferably, a positioning plate is fixedly provided on the outer near rear end of the positioning rod, a movable hole β is opened inside the positioning plate, an insertion rod is movably connected to the inner side of the movable hole β, the insertion rod is connected to the socket, an end plate β is fixedly provided on the inner end of the insertion rod, a pull ring β is fixedly provided on the inner end of the end plate β, a spring rod β is fixed between the outer end of the end plate β and the outer side of the movable hole β; the movable hole β is used for movably adjusting the insertion rod, the spring rod β is used for elastically adjusting the insertion rod, the insertion rod is used to be inserted into the inside of the socket to lock the positioning rod, and the end plate β and the pull ring β are used for hand-held operation of the insertion rod.

[0019] (3) Beneficial effects

[0020] Compared with the existing technology, the present invention has the following advantages: by installing multiple support structures at the bottom of the animal limb placement board, it can effectively absorb and disperse the impact force generated during the experiment, ensuring the adjustability of the animal limb placement board. The buffer structure prevents the fixed support structure from causing limb damage when the animal struggles, reducing potential harm to the animal.

[0021] The mid-limb restraint mechanism features two fixing seats, one for fixing the other, which can securely clamp and position the mid-limb of the animal. The transverse adjustment plate and the locking mechanism allow the mid-limb restraint mechanism to be flexibly adjusted to the size of the animal's limb, ensuring the stability and safety of the restraint.

[0022] The design of the elastic clamp and inner pad in the lower limb restraint mechanism can fit the shape of the animal's limbs while ensuring a certain degree of comfort. It can be flexibly adjusted according to different experimental requirements, reducing the pressure and discomfort caused by the restraint on the animal, which helps to improve the accuracy and reliability of experimental data.

[0023] The design of the first and second chains and the fixed ring in the upper limb restraint mechanism provides a stable restraining force, enables flexible adjustment of the restraint position, and avoids the risk of accidents caused by loosening or falling off of the restraint;

[0024] Through the combination of the mid-limb restraint mechanism, the lower limb restraint mechanism and the upper limb restraint mechanism, comprehensive and segmented restraint of the animal's limbs is achieved, which not only ensures the accuracy of the experiment, but also reduces the pressure and discomfort caused by the restraint to the animal. It has broad application prospects and promotion value in the field of animal experiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention from a top perspective;

[0026] Figure 2 It is a schematic diagram of the overall structure of the support structure of the present invention;

[0027] Figure 3This is a schematic structural diagram of the support structure of the present invention from the perspective of the lower end;

[0028] Figure 4 This is a schematic structural diagram of the entire front upper right side view of the mid-limb restraint mechanism of the present invention;

[0029] Figure 5 This is a schematic diagram of the structure of the entire mid-limb restraint mechanism of the present invention from the upper left front view;

[0030] Figure 6 It is a cross-sectional schematic diagram of the lateral adjustment structure of the present invention;

[0031] Figure 7 For the present invention Figure 6 A in the middle is an enlarged structural diagram;

[0032] Figure 8 This is a schematic diagram of the pressing and locking structure of the present invention from an upper perspective;

[0033] Figure 9 This is a schematic structural diagram of the pressing and locking structure of the present invention from another perspective above;

[0034] Figure 10 For the present invention Figure 9 The enlarged structural diagram at B in the middle;

[0035] Figure 11 This is a schematic diagram of the overall structure of the lower limb restraint mechanism of the present invention from an upper perspective;

[0036] Figure 12 This is a schematic structural diagram of one end of the lower limb restraint mechanism of the present invention;

[0037] Figure 13 For the present invention Figure 12 The enlarged structural diagram at C in the middle;

[0038] Figure 14 This is a schematic structural diagram of the other end of the lower limb restraint mechanism of the present invention;

[0039] Figure 15 For the present invention Figure 14 The enlarged structural diagram at D in the middle;

[0040] Figure 16 This is a schematic diagram of the structure of the upper limb restraint mechanism of the present invention from an upper perspective;

[0041] Figure 17 This is a schematic diagram of the sliding adjustment structure of the positioning rod of the upper limb restraint mechanism of the present invention;

[0042] Figure 18 For the present invention Figure 17 Enlarged structural diagram at E in the middle.

[0043] In the figure, 1. Animal limb placement plate; 11. Rubber gasket; 2. Support structure; 21. Spring frame; 211. Hydraulic cylinder; 212. Hydraulic column; 22. Upper mounting plate; 221. Fixed plate; 23. Support outer spring; 231. Support inner spring; 24. Lower mounting plate; 241. Chassis; 3. Limb mid-section restraint mechanism; 31. Support plate 1; 32. Fixing seat 1; 321. Groove a; 322. Slot a; 33. Fixing seat 2; 331. Groove b; 332. Slot b; 34. Support plate 2 ; 341, movable slot 1; 35, limiting frame; 351, movable slot 2; 36, transverse adjustment plate; 361, lifting device; 362, tooth groove; 37, pressing and locking structure; 371, pressing plate; 3711, tooth buckle; 372, fixing frame; 3721, movable hole α; 3722, limiting slot; 373, adjusting rod; 3731, spring rod α; 3732, end plate α; 3733, pull ring α; 374, baffle; 3741, slide slot 1; 375, limiting block; 376, limiting rod; 3761 , limit plate; 37611, pulley; 37612, shaft frame; 4, lower limb restraint mechanism; 41, elastic snap ring; 411, fixed block; 42, inner liner; 43, rope; 44, pad; 441, extension plate; 442, support plate 1; 443, support plate 2; 444, telescopic cylinder a; 445, telescopic rod a; 4451, fixed ball head a; 446, positioning block a; 45, support block; 46, installation positioning frame; 461, locking bolt; 462, locking nut; 463, telescopic cylinder b; 46 4. Telescopic rod b; 4641. Fixed ball head b; 465. Positioning block b; 47. Insert plate; 471. Mounting slot; 5. Upper limb restraint mechanism; 51. Bracket 1; 52. Bracket 2; 53. Cavity; 531. Slide slot 2; 532. Insert hole; 54. Positioning rod; 55. Chain 1; 56. Chain 2; 57. Fixed ring; 571. Connecting rod; 572. Slot; 58. Insert rod; 581. Spring rod β; 582. End plate β; 583. Pull ring β; 59. Positioning plate; 591. Movable hole β. DETAILED DESCRIPTION

[0044] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0045] See also Figures 1-18The embodiment of the present invention provides a technical solution: a limb restraint device for animal experiments, comprising an animal limb placement board 1, a support structure 2, a mid-limb restraint mechanism 3, a lower limb restraint mechanism 4, and an upper limb restraint mechanism 5. A rubber gasket 11 is bonded to the middle of the top of the animal limb placement board 1, and the support structure 2 is installed and distributed at the bottom of the animal limb placement board 1;

[0046] The mid-limb restraint mechanism 3 includes a support plate 1 31, a fixing seat 1 32, a fixing seat 2 33, a support plate 2 34, a limiting frame 35, a transverse adjustment plate 36 and a pressing and locking structure 37. The support plate 1 31 and the support plate 2 34 are fixedly distributed on the top of the animal limb placement plate 1, the fixing seat 1 32 is fixedly arranged at the inner upper end of the support plate 1 31, the fixing seat 2 33 is arranged at the inner upper end of the support plate 2 34, the limiting frame 35 is fixedly arranged at the outer upper end of the support plate 2 34, the transverse adjustment plate 36 passes through the support plate 2 34, the limiting frame 35 is fixedly connected to the outer side of the fixing seat 2 33, the pressing and locking structure 37 passes through the upper end of the limiting frame 35 and is connected to the transverse adjustment plate 36, and the fixing seat 1 32 and the fixing seat 2 33 move relative to each other to restrain the mid-limb;

[0047] The lower limb restraint mechanism 4 is provided at the lower end of the middle limb restraint mechanism 3. The lower limb restraint mechanism 4 includes an elastic clasp 41, an inner liner 42, a rope 43, a pad 44 and a support block 45. The rope 43 is fixed to the outer ends of the pad 44 and the support block 45 respectively. The elastic clasp 41 is fixed to the inner end of the support block 45. The inner liner 42 is fixed to the inner end of the pad 44. The elastic clasp 41 and the inner liner 42 are clamped together to restrain the lower limb.

[0048] The upper limb restraint mechanism 5 includes a bracket 1 51, a bracket 2 52, an iron chain 1 55, an iron chain 2 56 and a fixing ring 57. The bracket 1 51 and the bracket 2 52 are respectively fixed at the top ends of the animal limb placement plate 1, and the iron chain 1 55 and the iron chain 2 56 are respectively slidably connected to the inside of the bracket 1 51 and the bracket 2 52. The fixing ring 57 is fixed to the end of the iron chain 1 55, and the iron chain 2 56 is sleeved inside the fixing ring 57 for restraining the upper limb.

[0049] By installing multiple support structures 2 at the bottom of the animal limb placement board 1, the impact force generated during the experiment can be effectively absorbed and dispersed, ensuring the adjustability of the animal limb placement board 1 and having a certain tensile force. In addition, the buffer structure avoids limb damage caused by existing fixed support structures when the animal struggles, reducing potential harm to the animal.

[0050] The fixing seat 1 32 and fixing seat 2 33 designed in the mid-limb restraint mechanism 3 can firmly clamp and position the mid-limb of the animal. The design of the transverse adjustment plate 36 and the pressing locking structure 37 allows the mid-limb restraint mechanism 3 to be flexibly adjusted according to the size of the animal's limb, ensuring the stability and safety of the restraint.

[0051] The design of the elastic clasp 41 and the inner pad 42 in the lower limb restraint mechanism 4 allows the restraint to be tailored to the shape of the animal's limbs while ensuring a certain degree of comfort. This can be flexibly adjusted according to different experimental requirements, reducing the sense of oppression and discomfort caused by the restraint on the animal, thereby helping to improve the accuracy and reliability of experimental data.

[0052] The design of the iron chain 1 55, the iron chain 2 56 and the fixing ring 57 in the upper limb restraint mechanism 5 provides a stable restraining force, realizes flexible adjustment of the restraint position, and avoids the risk of accidents caused by loosening or falling off of the restraint;

[0053] Through the combination of the middle limb restraint mechanism 3, the lower limb restraint mechanism 4 and the upper limb restraint mechanism 5, comprehensive and segmented restraint of the animal's limbs is achieved, which not only ensures the accuracy of the experiment, but also reduces the pressure and discomfort caused by the restraint to the animal. It has broad application prospects and promotion value in the field of animal experiments.

[0054] Further improved, the support structure 2 includes a spring frame 21, a hydraulic cylinder 211, a hydraulic column 212, an upper mounting plate 22, a fixed plate 221, a support outer spring 23, a support inner spring 231, a lower mounting plate 24 and a chassis 241, the upper mounting plate 22 is mounted to the bottom of the animal limb placement plate 1 by bolts, the upper mounting plate 22 is fixedly arranged at the upper end of the spring frame 21, the fixed plate 221 is fixedly arranged at the lower end of the spring frame 21, the hydraulic cylinder 211 and the hydraulic column 212 are located inside the spring frame 21 and fixedly arranged between the upper mounting plate 22 and the fixed plate 221, the support outer spring 23 and the support inner spring 231 are fixedly arranged at the bottom of the fixed plate 221 in a double-layer structure, the lower mounting plate 24 is fixedly arranged at the lower ends of the support outer spring 23 and the support inner spring 231, and the chassis 241 is fixedly arranged at the bottom of the lower mounting plate 24;

[0055] The upper mounting plate 22 is used to install the support structure 2 to the bottom of the animal limb placement plate 1, the lower mounting plate 24 is used to install the support structure 2 above the ground floor, the chassis 241 is used to increase the installation area and improve stability, the spring frame 21, the hydraulic cylinder 211 and the hydraulic column 212 are combined to form a shock absorber for buffering and shock absorption to avoid shaking caused by animal struggles during the experiment. The double-layer structure of the support outer spring 23 and the support inner spring 231 further improves the shock absorption effect.

[0056] As a further improvement, a groove a321 is provided on the inner side of the fixing seat 1 32, and a clamping groove a322 is provided at the upper and lower ends of the groove a321;

[0057] A groove b331 is formed on the inner side of the second fixing seat 33, and a clamping groove b332 is formed in the middle of the groove b331;

[0058] The groove a321 and the groove b331 are directly used to clamp the animal's limbs, and the clamping groove a322 and the clamping groove b332 are used to limit the clamping connection between the fixing seat 1 32 and the fixing seat 2 33, and are used to reduce the inner diameter of the groove a321 and the groove b331.

[0059] Further improved, a movable groove 1 341 is formed near the upper end of the inner portion of the second support plate 34, a transverse adjustment plate 36 is connected through the movable groove 1 341 and the limit frame 35, a lifting device 361 is fixedly provided at the outer end of the transverse adjustment plate 36, a tooth groove 362 is formed on the upper end of the transverse adjustment plate 36, a movable groove 2 351 is formed on the upper end of the limit frame 35, and a pressing and locking structure 37 includes a pressing plate 371, which is connected through the movable groove 2 351, and a tooth buckle 3711 is fixedly distributed on the bottom of the pressing plate 371, which is locked at the tooth groove 362;

[0060] The movable groove 1 341 and the limit frame 35 are both used for movably adjusting the transverse adjustment plate 36. The transverse adjustment plate 36 is used to support the transverse movement of the fixed seat 2 33. The pulling device 361 is used for hand-held operation of the transverse adjustment plate 36. The movable groove 2 351 is used to limit the movable adjustment pressing plate 371. The pressing plate 371 is used to adjust up and down or lock the transverse adjustment plate 36. The tooth groove 362 is used to accurately engage the locking tooth buckle 3711 to prevent movement after locking.

[0061] Further improved, the pressing and locking structure 37 further includes a fixing frame 372, an adjusting rod 373 and a baffle 374. The adjusting rod 373 is fixedly arranged at the middle of the top of the pressing plate 371. The fixing frame 372 is fixedly arranged at the upper end of the limit frame 35 in an N-shaped structure. A movable hole α3721 is opened in the middle of the fixing frame 372. The adjusting rod 373 passes through the movable hole α3721 and is connected to the end plate α3732. A pull ring α3733 is fixed to the upper end of the end plate α3732. A spring rod α3731 is fixed between the bottom of the movable hole α3721 and the top of the pressing plate 371, and the spring rod α3731 is located outside the adjusting rod 373.

[0062] The end plate α3732 and the pull ring α3733 are used for holding the stretching operation adjustment rod 373, the movable hole α3721 is used to limit the movable adjustment rod 373, the adjustment rod 373 is used to drive the pressing plate 371 to adjust up and down, and the spring rod α3731 is used for elastic compression adjustment to make the stretching more stable;

[0063] Limiting slots 3722 are defined at both the front and rear ends of the fixing frame 372. Limiting rods 376 having an L-shaped rod structure are fixed to both ends of the top of the pressing plate 371. The limiting rods 376 pass through the limiting slots 3722 and are connected to the limiting plate 3761. Axle brackets 37612 are fixed to both ends of the inner side of the limiting plate 3761. A pulley 37611 is rotatably connected between the shaft brackets 37612. The pulley 37611 is slidably connected to the outer wall of the fixing frame 372.

[0064] The L-shaped limiting rod 376 is used to limit the position of the limiting groove 3722 to stabilize the pressing plate 371. The limiting plate 3761 further assists the limiting rod 376 in sliding up and down. The shaft bracket 37612 is used to stably support the rotation of the pulley 37611. The pulley 37611 is used to assist the limiting plate 3761 in contacting the outer wall of the fixing frame 372 for stable sliding. This reduces friction and resistance during the sliding adjustment process, thereby improving the smoothness and efficiency of the operation.

[0065] The baffle 374 is fixed to the front and rear ends of the top of the limit frame 35. The inner end of the baffle 374 is provided with a slide groove 3741. The front and rear ends of the top of the pressing plate 371 are fixed with L-shaped plate-like limit blocks 375. The limit blocks 375 are slidably connected to the inside of the slide groove 3741.

[0066] The limiting block 375 having an L-shaped plate structure is used to limit the position to the inside of the sliding groove 3741, further stabilizing the upward and downward adjustment of the auxiliary pressing plate 371.

[0067] Further improved, both ends of the elastic snap ring 41 are fixed with fixed blocks 411, the outer ends of the fixed blocks 411 are fixed with telescopic cylinders b463, the outer ends of the telescopic cylinders b463 are connected to telescopic rods b464, the outer ends of the telescopic rods b464 are fixed with fixed ball heads b4641, the outer ends of the fixed ball heads b4641 are movably connected to positioning blocks b465, the outer ends of the positioning blocks b465 are fixed with mounting and positioning frame 46, the middle of the mounting and positioning frame 46 is threadedly connected with a locking bolt 461, the bottom of the locking bolt 461 is threadedly connected with a locking nut 462, and the locking nut 462 is provided at the bottom of the mounting and positioning frame 46;

[0068] The elastic snap ring 41 can flexibly adjust the opening and closing degree, the fixed block 411 is used to support the installation structure toward the outward end, the telescopic cylinder b463 and the telescopic rod b464 are used to telescopically adjust the spacing of the installation positioning frame 46, and the fixed ball head b4641 is embedded in the positioning block b465 for universal adjustment of the angle of the installation positioning frame 46, which is convenient for the corresponding installation of the docking plate 47, and the locking bolt 461 and the locking nut 462 are used to pass through the installation slot 471 for locking the installation.

[0069] Further improved, the front and rear ends of the outer side of the pad 44 are fixed with a support plate 1 442, the outer end of the support plate 1 442 is fixed with a telescopic cylinder a444, the outer end of the telescopic cylinder a444 is connected to a telescopic rod a445, the outer end of the telescopic rod a445 is fixed with a fixed ball head a4451, the outer end of the fixed ball head a4451 is movably connected to a positioning block a446, the outer end of the positioning block a446 is fixed with a support plate 2 443, the inner end of the support plate 2 443 is fixed with an extension plate 441, the inner end of the extension plate 441 is fixed with an insert plate 47, and the middle of the insert plate 47 is provided with a mounting groove 471;

[0070] The telescopic cylinder a444 and the telescopic rod a445 are used to telescopically adjust the distance between the extension plate 441 and the plug plate 47. The fixed ball head a4451 is embedded in the positioning block a446 to universally adjust the angle of the extension plate 441. The plug plate 47 and the mounting groove 471 are designed to be easy to install and disassemble, and can be docked and installed at any angle, which not only facilitates the user's preparation work before and after the experiment, but also helps to reduce the maintenance cost and difficulty of use of the device.

[0071] Further improved, the interior of the bracket 1 51 and the bracket 2 52 is provided with a cavity 53, the front and rear ends of the cavity 53 are provided with a second slide groove 531, the rear end of the second slide groove 531 is provided with a socket 532, the interior of the second slide groove 531 is slidably connected to the positioning rod 54, the iron chain 1 55 and the iron chain 2 56 are respectively sleeved on the outside of the positioning rod 54, the iron chain 1 55 and the iron chain 2 56 are composed of a circular ring and an elliptical ring, the upper end of the iron chain 1 55 is fixed with a connecting rod 571, and the fixing ring 57 is fixed to the upper end of the connecting rod 571;

[0072] A slot 572 is formed on the inner outer end of the fixing ring 57. The thickness of the slot 572 is greater than the thickness of the first iron chain 55 and the second iron chain 56.

[0073] The positioning rod 54 is located inside the second slide 531 to adjust the height up and down. The iron chain 1 55 and the iron chain 2 56 composed of a circular ring and an elliptical ring are sturdy and durable. The empty slot 572 is used to place the iron chain 2 56. The iron chain 2 56 is located inside the fixed ring 57 to restrain the animal's limbs and position them.

[0074] Specifically, the positioning rod 54 is fixedly provided with a positioning plate 59 near the rear end thereof, and a movable hole β591 is opened inside the positioning plate 59. The inside of the movable hole β591 is movably connected to the insertion rod 58, and the insertion rod 58 is connected to the insertion hole 532. The inner end of the insertion rod 58 is fixedly provided with an end plate β582, and the inner end of the end plate β582 is fixedly provided with a pull ring β583. A spring rod β581 is fixed between the outer end of the end plate β582 and the outer side of the movable hole β591.

[0075] The movable hole β591 is used for movably adjusting the insertion rod 58, the spring rod β581 is used for elastically adjusting the insertion rod 58, the insertion rod 58 is used to be inserted into the inside of the insertion hole 532 to lock the positioning rod 54, and the end plate β582 and the pull ring β583 are used for hand-held operation of the insertion rod 58.

[0076] Working Principle: The lower mounting plate 24 and the bottom plate 241 of the support structure 2 are installed above the floor. The multi-stage structure of the spring frame 21, the hydraulic cylinder 211 and the hydraulic column 212, as well as the supporting outer spring 23 and the supporting inner spring 231 provide a certain amount of tensile force when the animal struggles, thus reducing the possibility of animal limb damage during the experiment.

[0077] First, hold the pull ring β583 to stretch the insertion rod 58. The elastic action of the spring rod β581 allows the insertion rod 58 to be adjusted inside the movable hole β591, thereby allowing the insertion rod 58 to move inward and leave the insertion hole 532. Then, adjust the positioning rod 54 at the second slide groove 531 up and down, so that the first chain 55 and the second chain 56 can be adjusted up and down to accommodate animal limbs of different heights. Pass the ring above the second chain 56 through the empty slot 572 and place it inside the fixing ring 57. Then, pass the upper part of the animal's limb through the inner part of the fixing ring 57 to be restrained and fixed.

[0078] The pull ring α3733 is held by hand to pull the adjustment rod 373 upward. The elastic action of the spring rod α3731 causes the adjustment rod 373 to be movable and adjustable inside the movable hole α3721, so that the pressing plate 371 is located at the movable groove 2 351 and moves upward stably, so that the tooth buckle 3711 leaves the tooth groove 362. Then, the lifting device 361 is held by the other hand to manipulate the transverse adjustment plate 36, so that the fixing seat 2 33 moves toward the fixing seat 1 32, and the middle section of the animal limb is clamped and positioned through the groove a321 and the groove b331. After positioning, the pull ring α3733 is released so that the tooth buckle 3711 is buckled onto the upper part of the tooth groove 362 to lock the transverse adjustment plate 36.

[0079] The elastic snap ring 41 and the inner liner 42 are relatively clamped together to restrain the lower part of the animal's limbs. The soft and comfortable structure prevents limb damage or discomfort. The multi-angle adjustable mounting positioning frame 46 is telescopically adjusted through the telescopic cylinder b463, telescopic rod b464, fixed ball head b4641, and positioning block b465. The multi-angle adjustable extension plate 441 is then telescopically adjusted through the telescopic cylinder a444, telescopic rod a445, fixed ball head a4451, and positioning block a446. The insert plate 47 is inserted into the mounting positioning frame 46 and locked with a locking bolt 461 passing through the mounting slot 471 and the locking nut 462.

[0080] Finally, the feet of the animal's limbs are placed on the rubber gasket 11 to increase friction and stabilize the placement, thereby achieving comprehensive and segmented restraint of the animal's limbs, which not only ensures the accuracy of the experiment but also reduces the pressure and discomfort caused by the restraint to the animal.

[0081] The present invention comprises an animal limb placement plate 1, a rubber gasket 11, a support structure 2, a spring frame 21, a hydraulic cylinder 211, a hydraulic column 212, an upper mounting plate 22, a fixed plate 221, a support outer spring 23, a support inner spring 231, a lower mounting plate 24, a chassis 241, a limb mid-section restraint mechanism 3, a support plate 1 31, a fixing seat 1 32, a groove a321, a slot a322, a fixing seat 2 33, a groove b331, a slot b332, a support plate 2 34, a movable groove 1 341, a limiting frame 35, a movable groove 2 351, a transverse adjustment plate 36, a lifting device 361, a tooth groove 362, a pressing and locking structure 37, a pressing plate 371, a tooth buckle 3711, and a fixing plate 371. Fixed frame 372, movable hole α3721, limiting groove 3722, adjusting rod 373, spring rod α3731, end plate α3732, pull ring α3733, baffle 374, slide groove 1 3741, limiting block 375, limiting rod 376, limiting plate 3761, pulley 37611, shaft frame 37612, lower limb restraint mechanism 4, elastic snap ring 41, fixing block 411, inner lining 42, rope 43, pad 44, extension plate 441, support plate 1 442, support plate 2 443, telescopic cylinder a444, telescopic rod a445, fixed ball head a4451, positioning block a446, support block 45, installation positioning frame 46, locking bolt 461, locking Nut 462, telescopic cylinder b463, telescopic rod b464, fixed ball head b4641, positioning block b465, plug plate 47, mounting slot 471, upper limb restraint mechanism 5, bracket 1 51, bracket 2 52, cavity 53, slide slot 2 531, socket 532, positioning rod 54, iron chain 1 55, iron chain 2 56, fixing ring 57, connecting rod 571, empty slot 572, plug rod 58, spring rod β581, end plate β582, pull ring β583, positioning plate 59, movable hole β591, all components are universal standard parts or components known to those skilled in the art, and their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods. It is known that the problem solved by the present invention is that it is inconvenient to adjust according to the thickness of animal limbs in different animal experiments, and it is difficult to adapt to animals of different sizes for restraint. Animals are prone to struggle during the experiment, and the existing restraint structure causes oppression and discomfort to the animals, and loosening or falling off of the restraint may cause accidental risks. The present invention realizes comprehensive and segmented restraint of animal limbs through the mutual combination of the above-mentioned components, through the combination of the middle limb restraint mechanism 3, the lower limb restraint mechanism 4 and the upper limb restraint mechanism 5, which not only ensures the accuracy of the experiment, but also reduces the pressure and discomfort caused to the animals by the restraint. It has broad application prospects and promotion value in the field of animal experiments.

[0082] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, from all points of view, the embodiments should be regarded as illustrative and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and range of equivalents of the claims are included in the present invention. Any reference signs in the claims should not be construed as limiting the claim to which they relate.

[0083] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A limb restraint device for animal experiments, comprising an animal limb placement plate (1), a support structure (2), a mid-limb restraint mechanism (3), a lower limb restraint mechanism (4), and an upper limb restraint mechanism (5), characterized in that: A rubber gasket (11) is bonded to the middle of the top of the animal limb placement board (1), and the support structure (2) is installed and distributed on the bottom of the animal limb placement board (1); The mid-limb restraint mechanism (3) comprises a support plate 1 (31), a fixing seat 1 (32), a fixing seat 2 (33), a support plate 2 (34), a limit frame (35), a transverse adjustment plate (36) and a pressing locking structure (37), wherein the support plate 1 (31) and the support plate 2 (34) are fixedly distributed on the top of the animal limb placement plate (1), the fixing seat 1 (32) is fixedly arranged on the inner upper end of the support plate 1 (31), and the fixing seat 2 (33) is fixedly arranged on the inner upper end of the support plate 1 (31). The said limit frame (35) is fixedly arranged at the upper end of the inner side of the second support plate (34), the said transverse adjustment plate (36) passes through the second support plate (34), the limit frame (35) is fixedly connected to the outer side of the second fixed seat (33), the said pressing locking structure (37) passes through the upper end of the limit frame (35) and is connected to the transverse adjustment plate (36), the said fixed seat (32) and the fixed seat (33) move relative to each other to restrain the middle section of the limb; The lower limb restraint mechanism (4) is arranged at the lower end of the middle limb restraint mechanism (3), and the lower limb restraint mechanism (4) comprises an elastic clasp (41), an inner lining (42), a rope (43), a pad (44) and a support block (45), wherein the rope (43) is fixedly arranged at the outer ends of the pad (44) and the support block (45), respectively, the elastic clasp (41) is fixedly arranged at the inner end of the support block (45), the inner lining (42) is fixedly arranged at the inner end of the pad (44), and the elastic clasp (41) and the inner lining (42) are clamped together to restrain the lower limb; The upper limb restraint mechanism (5) includes a bracket (51), a bracket (52), an iron chain (55), an iron chain (56) and a fixing ring (57). The bracket (51) and the bracket (52) are respectively fixed on the top two ends of the animal limb placement plate (1). The iron chain (55) and the iron chain (56) are respectively slidably connected to the inside of the bracket (51) and the bracket (52). The fixing ring (57) is fixed to the end of the iron chain (55). The iron chain (56) is sleeved inside the fixing ring (57) for restraining the upper limb.

2. The animal experiment limb restraint device according to claim 1, characterized in that: The support structure (2) comprises a spring frame (21), a hydraulic cylinder (211), a hydraulic column (212), an upper mounting plate (22), a fixed plate (221), a supporting outer spring (23), a supporting inner spring (231), a lower mounting plate (24) and a chassis (241). The upper mounting plate (22) is mounted on the bottom of the animal limb placement plate (1) by bolts. The upper mounting plate (22) is fixedly arranged on the upper end of the spring frame (21). The fixed plate (221) is fixedly arranged on the spring frame ( The hydraulic cylinder (211) and the hydraulic column (212) are located inside the spring frame (21) and fixedly arranged between the upper mounting plate (22) and the fixed plate (221); the supporting outer spring (23) and the supporting inner spring (231) are fixedly arranged at the bottom of the fixed plate (221) in a double-layer structure; the lower mounting plate (24) is fixedly arranged at the lower ends of the supporting outer spring (23) and the supporting inner spring (231); and the bottom plate (241) is fixedly arranged at the bottom of the lower mounting plate (24).

3. The animal experiment limb restraint device according to claim 1, characterized in that: A groove a (321) is provided on the inner side of the fixing seat 1 (32), and a clamping groove a (322) is provided at the upper and lower ends of the groove a (321); A groove b (331) is provided on the inner side of the second fixing seat (33), and a clamping groove b (332) is provided in the middle of the groove b (331).

4. The animal experiment limb restraint device according to claim 3, characterized in that: A movable groove 1 (341) is provided near the upper end of the inner portion of the support plate 2 (34), the transverse adjustment plate (36) is connected to the movable groove 1 (341) and the limit frame (35), the outer end of the transverse adjustment plate (36) is fixed with a pulling device (361), the upper end of the transverse adjustment plate (36) is provided with a tooth groove (362), the upper end of the limit frame (35) is provided with a movable groove 2 (351), the pressing and locking structure (37) includes a pressing plate (371), the pressing plate (371) is connected to the movable groove 2 (351), the bottom of the pressing plate (371) is fixed with a tooth buckle (3711), and the tooth buckle (3711) is locked at the tooth groove (362).

5. The animal experiment limb restraint device according to claim 4, characterized in that: The pressing and locking structure (37) further comprises a fixing frame (372), an adjusting rod (373) and a baffle (374), wherein the adjusting rod (373) is fixedly arranged at the middle of the top of the pressing plate (371), the fixing frame (372) is fixedly arranged at the upper end of the limiting frame (35) in an N-shaped structure, a movable hole α (3721) is opened at the middle of the fixing frame (372), the adjusting rod (373) passes through the movable hole α (3721) and is connected to an end plate α (3732), a pull ring α (3733) is fixedly arranged at the upper end of the end plate α (3732), a spring rod α (3731) is fixedly arranged between the bottom of the movable hole α (3721) and the top of the pressing plate (371), and the spring rod α (3731) is located outside the adjusting rod (373); The front and rear ends of the fixing frame (372) are both provided with limiting grooves (3722), and both ends of the top of the pressing plate (371) are fixed with limiting rods (376) with an L-shaped rod structure, and the limiting rods (376) pass through the limiting grooves (3722) and are connected to the limiting plate (3761), and the inner ends of the limiting plate (3761) are both fixed with shaft frames (37612), and the shaft frames (37612) are rotatably connected with a pulley (37611), and the pulley (37611) is slidably connected to the outer wall of the fixing frame (372); The baffle (374) is fixedly arranged at the front and rear ends of the top of the limit frame (35), and a slide groove (3741) is provided at the inner end of the baffle (374). The front and rear ends of the top of the pressing plate (371) are fixedly provided with a limit block (375) with an L-shaped plate structure, and the limit block (375) is slidably connected to the inside of the slide groove (3741).

6. The animal experiment limb restraint device according to claim 1, characterized in that: The two ends of the elastic snap ring (41) are fixed with fixed blocks (411), the outer ends of the fixed blocks (411) are fixed with telescopic cylinders b (463), the outer ends of the telescopic cylinders b (463) are connected with telescopic rods b (464), the outer ends of the telescopic rods b (464) are fixed with fixed ball heads b (4641), the outer ends of the fixed ball heads b (4641) are movably connected with positioning blocks b (465), the outer ends of the positioning blocks b (465) are fixed with mounting and positioning frames (46), the middle of the mounting and positioning frames (46) is connected with a locking bolt (461) through a thread, the bottom of the locking bolt (461) is connected with a locking nut (462) through a thread, and the locking nut (462) is arranged at the bottom of the mounting and positioning frames (46).

7. The animal experiment limb restraint device according to claim 6, characterized in that: The front and rear ends of the outer side of the pad (44) are fixedly provided with a support plate 1 (442), the outer end of the support plate 1 (442) is fixedly provided with a telescopic cylinder a (444), the outer end of the telescopic cylinder a (444) is connected to a telescopic rod a (445), the outer end of the telescopic rod a (445) is fixedly provided with a fixed ball head a (4451), the outer end of the fixed ball head a (4451) is movably connected to a positioning block a (446), the outer end of the positioning block a (446) is fixedly provided with a support plate 2 (443), the inner end of the support plate 2 (443) is fixedly provided with an extension plate (441), the inner end of the extension plate (441) is fixedly provided with an inserting plate (47), and a mounting groove (471) is provided in the middle of the inserting plate (47).

8. The animal experiment limb restraint device according to claim 1, characterized in that: The bracket 1 (51) and the bracket 2 (52) are provided with a cavity (53) inside, the front and rear ends of the cavity (53) are provided with a chute 2 (531), the rear end of the chute 2 (531) is provided with a socket (532), the interior of the chute 2 (531) is slidably connected with a positioning rod (54), the iron chain 1 (55) and the iron chain 2 (56) are respectively sleeved on the outside of the positioning rod (54), the iron chain 1 (55) and the iron chain 2 (56) are composed of a circular ring and an elliptical ring, the upper end of the iron chain 1 (55) is fixed with a connecting rod (571), and the fixing ring (57) is fixed to the upper end of the connecting rod (571); An empty slot (572) is provided at the inner outer end of the fixing ring (57), and the thickness of the empty slot (572) is greater than the thickness of the first iron chain (55) and the second iron chain (56).

9. The animal experiment limb restraint device according to claim 8, characterized in that: A positioning plate (59) is fixedly provided near the rear end of the exterior of the positioning rod (54), a movable hole β (591) is provided inside the positioning plate (59), an insert rod (58) is movably connected inside the movable hole β (591), the insert rod (58) is connected to the insertion hole (532), an end plate β (582) is fixedly provided at the inner end of the insert rod (58), a pull ring β (583) is fixedly provided at the inner end of the end plate β (582), and a spring rod β (581) is fixedly provided between the outer end of the end plate β (582) and the exterior of the movable hole β (591).

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