Goose subwing vein blood sampling binding device
By designing a goose wing vein blood collection binding device, which uses an arc-shaped plate, a chest limiting mechanism, and a wing clamping mechanism to fix hybrid geese, the problem of low efficiency in the wing vein sampling process was solved, and the blood collection efficiency was improved.
Patent Information
- Application Number
- CN202520259021.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-18
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2035-02-18
AI Technical Summary
During the blood collection process from the subwing vein of hybrid geese, the geese's violent struggles led to significant physical exertion for the researchers, resulting in low blood collection efficiency.
A goose wing vein blood collection binding device was designed, including an operating table, an arc plate, a chest limiting mechanism, a shank limiting mechanism, and a wing clamping mechanism. These mechanisms fix the goose in a side-lying position and spread its wings for limiting, avoiding the physical exertion of struggling on the experimenter.
The method effectively restrained the hybrid geese, preventing them from struggling violently, improving the efficiency of blood collection from the wing veins, and reducing the physical exertion of the researchers.
Smart Images
Figure CN223731557U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to geese wing under blood collection technical field, specifically, relate to a kind of goose wing under venous blood collection binding device. BACKGROUND
[0002] Hybrid geese refers to different varieties or populations of geese are crossed by artificial means to obtain offspring with excellent traits of both parents. During the cultivation process, on the 14th day, 42 days and 70 days of cultivation, several healthy hybrid geese from the same cultivation batch are randomly selected, and 5 mL of blood is collected from the wing vein of each hybrid goose to determine the serum parameter index.
[0003] When hybrid geese are subjected to wing vein blood collection, one experimenter needs to fix the hybrid geese and unfold the goose wings to expose the wing vein blood collection site, and another experimenter needs to collect blood from the wing vein of the hybrid geese. However, during the wing vein blood collection process, the hybrid geese will struggle violently, which will cause a significant physical exertion on the experimenter, making it difficult for the experimenter to collect blood from the wing veins of multiple hybrid geese without taking multiple breaks, resulting in low efficiency of wing vein blood collection.
[0004] Therefore, how to improve the efficiency of wing vein blood collection is a problem that needs to be solved in this technical field. UTILITY MODEL CONTENT
[0005] The utility model aims at providing a goose wing under venous blood collection binding device to improve the above problems. To achieve the above purpose, the technical scheme adopted by the utility model is as follows:
[0006] The present application provides a goose wing under venous blood collection binding device, comprising:
[0007] An operation table is provided with an arc-shaped plate, which is used to place the goose's torso on its side and limit the goose's wing on one side;
[0008] A chest limiting mechanism is provided on the operation table and corresponds to the arc-shaped plate. The chest limiting mechanism is used to limit the goose's chest, so that the goose is fixed on the arc-shaped plate in a side-lying posture;
[0009] A shin limiting mechanism is provided on the operation table and is used to limit the goose's shin.
[0010] A wing clamping mechanism is provided on the operation table and is used to limit the goose's wing on the other side.
[0011] Preferably, a head limiting mechanism is further included, which comprises:
[0012] A U-shaped frame is fixedly connected to the operating table, and a limiting groove is arranged on the inner side of the U-shaped frame;
[0013] A shielding plate is slidingly arranged in the limiting groove, a limiting opening is arranged in the middle of the bottom of the shielding plate, the limiting opening is used for the neck of the goose to pass through, and the shielding plate is used for shielding the view behind the head of the goose and limiting the deflection range of the head of the goose.
[0014] Preferably, the chest limiting mechanism comprises:
[0015] A spring net is connected to the operating table through a pressing plate on one side of the arc-shaped plate, and a connecting piece is connected to the head end of the spring net;
[0016] A limiting assembly is arranged on the operating table, the limiting assembly is located on the other side of the arc-shaped plate, and the connecting piece is detachably connected with the limiting assembly.
[0017] Preferably, the connecting piece comprises a connecting rod, the peripheral wall of the connecting rod is fixedly connected with the head end of the spring net, a hooking plate is integrally arranged on the peripheral wall of the connecting rod, and the hooking plate is hookingly connected with the limiting assembly.
[0018] Preferably, the limiting assembly comprises:
[0019] A connecting seat is fixedly connected to the operating table;
[0020] A plurality of U-shaped rods are arranged on the connecting seat, and the hooking plate is hookingly connected with any one of the U-shaped rods.
[0021] Preferably, the tibial limiting mechanism comprises:
[0022] An L-shaped plate is fixedly connected to the operating table, a silica gel pad I is fixedly connected to one side of the vertical plate of the L-shaped plate, and a hook surface of a magic buckle is fixedly connected to the other side of the vertical plate of the L-shaped plate;
[0023] A limiting belt is fixedly connected with the vertical plate of the L-shaped plate at the head end, the limiting belt is located below the silica gel pad I, a silica gel pad II is connected to the head of the limiting belt, a hair surface of the magic buckle is connected to the tail of the limiting belt, and the hair surface and the hook surface of the magic buckle are bonded.
[0024] Preferably, the wing clamping mechanism comprises:
[0025] A T-shaped plate is fixedly connected on the operation table;
[0026] A clamping plate I is connected with the tail end of the T-shaped plate, a silica gel pad III is fixedly connected with the head of the clamping plate I, and a limiting seat is integrally arranged at the tail of the clamping plate I, and a limiting hole I is formed in the limiting seat;
[0027] A clamping plate II is hingedly connected with the clamping plate I through a shaft rod, a silica gel pad IV is fixedly connected with the head of the clamping plate II, and an arc-shaped limiting plate is integrally arranged at the tail of the clamping plate II, and a plurality of limiting holes II are symmetrically formed in the arc-shaped limiting plate;
[0028] A torsional spring is arranged on the shaft rod, one end of the torsional spring abuts against the clamping plate I, and the other end of the torsional spring abuts against the clamping plate II;
[0029] A spike is arranged in any one of the limiting hole II and the limiting hole I.
[0030] Preferably, a sliding groove is arranged on one side of the vertical plate of the T-shaped plate, a moving seat is slidably connected in the sliding groove, the tail end of the clamping plate I is fixedly connected with the moving seat, a waist-shaped hole is formed in the vertical plate of the T-shaped plate, a handle bolt is threadedly connected with the moving seat, the handle bolt is arranged in the waist-shaped hole, an abutting plate is integrally arranged on the handle bolt, a rubber pad is fixedly connected with the abutting plate, and the rubber pad abuts against the other side of the vertical plate of the T-shaped plate.
[0031] The utility model discloses the beneficial effects are:
[0032] The utility model discloses a chest limiting mechanism and shin limiting mechanism cooperate, and hybrid geese are fixed on the operation table in the posture of lateral recumbency, then through wing clamping mechanism, the wing of the hybrid goose for blood sampling is kept in the unfolded state, and the experimenter carries out the wing under vein blood sampling of the hybrid goose of binding, avoids the physical consumption of the experimenter caused by the violent struggle of hybrid geese, and improves the efficiency of the wing under vein blood sampling operation.
[0033] Other features and advantages of the present application will be further described in the following specification, and some of them become apparent from the specification, or are understood by practicing the embodiments of the present application. The purposes and other advantages of the present application can be realized and obtained by the structures specifically pointed out in the written specification, claims and drawings. BRIEF DESCRIPTION OF DRAWINGS
[0034] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the premise of the drawings.
[0035] Figure 1 The structure schematic diagram of the present application;
[0036] Figure 2 The structure schematic diagram of the chest limiting mechanism of the present application;
[0037] Figure 3 The structure schematic diagram of the shin limiting mechanism of the present application;
[0038] Figure 4 The structure schematic diagram of the wing clamping mechanism of the present application;
[0039] Figure 5 The moving seat connection schematic diagram of the present application. DETAILED DESCRIPTION
[0040] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of the present application.
[0041] It should be noted that: similar labels and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. Meanwhile, in the description of the present application, the terms "first", "second" and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.
[0042] As Figure 1 shown, the present embodiment provides a goose wing vein blood sampling binding device, which comprises:
[0043] An operating table 1 is provided with an arc-shaped plate 2 for placing a goose in a lateral recumbent position and limiting the wings on one side;
[0044] A chest limiting mechanism 3 is arranged on the operating table 1 and corresponds to the arc-shaped plate 2. The chest limiting mechanism 3 is used for limiting the chest of the goose, so that the goose is fixed on the arc-shaped plate 2 in a lateral recumbent position.
[0045] A tibial limiting mechanism 4 is arranged on the operating table 1 and is used for limiting the tibia of the goose.
[0046] A wing clamping mechanism 5 is arranged on the operating table 1 and is used for limiting the wings on the other side.
[0047] It can be understood that when the hybrid goose is subjected to wing vein blood sampling, the hybrid goose is placed in a lateral recumbent position on the arc-shaped plate 2. Then, the chest limiting mechanism 3 is used to limit the chest of the hybrid goose, so that the goose is fixed on the arc-shaped plate 2 in a lateral recumbent position. Through the cooperation of the chest limiting mechanism 3 and the arc-shaped plate 2, the wings on the lower side of the goose are limited, so that the wings on the lower side are in a closed state. Then, the tibial limiting mechanism 4 is used to limit the tibia of the hybrid goose, so that the tibia of the hybrid goose cannot move, avoiding the vibration caused by the movement of the tibia during blood sampling. Then, the wings on the upper side of the hybrid goose are unfolded, and the wing clamping mechanism 5 is used to limit the wings on the upper side, so that the wings on the upper side are kept in an unfolded state. Then, the experimenter performs wing vein blood sampling on the hybrid goose. In this technical solution, the hybrid goose is fixed on the operating table 1 in a lateral recumbent position through the cooperation of the chest limiting mechanism 3 and the tibial limiting mechanism 4. Then, the experimenter performs wing vein blood sampling on the hybrid goose with unfolded wings. This avoids the physical consumption of the experimenter caused by the violent struggle of the hybrid goose and improves the efficiency of wing vein blood sampling.
[0048] As shown in Figure 1 , it also includes a head limiting mechanism 6, which includes:
[0049] A U-shaped frame 61 is fixedly connected to the operating table 1, and a limiting groove 62 is arranged on the inner side of the U-shaped frame 61.
[0050] A shielding plate 63 is slidingly arranged in the limiting groove 62, a limiting opening 64 is arranged in the middle of the bottom of the shielding plate 63, the limiting opening 64 is used for the neck of the goose to pass in, and the shielding plate 63 is used for shielding the view behind the head of the goose and limiting the deflection range of the head of the goose.
[0051] It can be understood that after the hybrid goose is bound on the operation table 1 through the cooperation of the chest limiting mechanism 3 and the shank limiting mechanism 4, the head of the hybrid goose is in a movable state, which can cause the experimental personnel to be pecked, and after the hybrid goose observes the blood sampling process, the hybrid goose will be stressed, resulting in poor growth of the hybrid goose; therefore, the U-shaped frame 61 is arranged on the operation table 1, the shielding plate 63 is slidingly connected in the U-shaped frame 61, after the hybrid goose is bound on the operation table 1 through the cooperation of the chest limiting mechanism 3 and the shank limiting mechanism 4, the shielding plate 63 is slidingly upward in the U-shaped frame 61, the neck of the hybrid goose is passed into the limiting opening 64, and then the shielding plate 63 is slidingly arranged to the bottom end in the U-shaped frame 61, the view behind the head of the goose is shielded by the shielding plate 63, the experimental personnel is prevented from being pecked, the deflection range of the head of the goose is limited by the shielding plate 63, and the hybrid goose is prevented from being pecked.
[0052] As shown in Figures 1-2 , the chest limiting mechanism 3 comprises:
[0053] The tail end of the elastic net 31 is connected to the operation table 1 through the pressing plate 32, the pressing plate 32 is located on one side of the arc-shaped plate 2, and the head end of the elastic net 31 is connected with the connecting piece 33.
[0054] The limiting assembly 34 is arranged on the operation table 1, the limiting assembly 34 is located on the other side of the arc-shaped plate 2, and the connecting piece 33 is detachably connected with the limiting assembly 34.
[0055] It can be understood that after the hybrid goose is placed on the arc-shaped plate 2 in a lateral recumbent position, the elastic net 31 is stretched to cover the chest of the hybrid goose, and then the connecting piece 33 is connected with the limiting assembly 34, so that the elastic net 31 limits the chest of the hybrid goose.
[0056] As shown in Figure 2 , the connecting piece 33 comprises a connecting rod 331, the peripheral wall of the connecting rod 331 is fixedly connected with the head end of the elastic net 31, a hooking plate 332 is integrally arranged on the peripheral wall of the connecting rod 331, and the hooking plate 332 is hookingly connected with the limiting assembly 34.
[0057] It can be understood that, by the connecting rod 331 fixedly connected at the first end of the elastic net 31, the experimental personnel can stretch the elastic net 31, and the hooking plate 332 integrally arranged on the peripheral wall of the connecting rod 331 can be quickly connected or detached with the limiting assembly 34 in a hooking mode, so that the limiting of the hybrid goose chest can be quickly implemented or cancelled, and the working efficiency is improved.
[0058] As shown in Figure 2 the limiting assembly 34 comprises:
[0059] a connecting seat 341 fixedly connected on the operation table 1;
[0060] a plurality of U-shaped rods 342 arranged on the connecting seat 341, and the hooking plate 332 is hookingly connected with any U-shaped rod 342.
[0061] It can be understood that, after the elastic net 31 is stretched by a certain length, the hybrid goose chest can be effectively limited, and the chest circumference of different geese is different; therefore, a plurality of U-shaped rods 342 are arranged on the connecting seat 341, the experimental personnel stretches the elastic net 31 through the connecting rod 331, covers the hybrid goose chest after stretching the elastic net 31, and then hookingly connects the hooking plate 332 with the corresponding U-shaped rod 342, so as to ensure the effectiveness and applicability of limiting the hybrid goose chest.
[0062] As shown in Figure 3 the tibial limiting mechanism 4 comprises:
[0063] an L-shaped plate 41 fixedly connected on the operation table 1, a vertical plate of the L-shaped plate 41 is fixedly connected with a silica gel pad I 42, and the other side of the vertical plate of the L-shaped plate 41 is fixedly connected with a hook surface of a magic buckle 43;
[0064] a limiting belt 44, a first end of the limiting belt 44 is fixedly connected with the vertical plate of the L-shaped plate 41, the limiting belt 44 is located below the silica gel pad I 42, a first end of the limiting belt 44 is connected with a silica gel pad II 45, a tail end of the limiting belt 44 is connected with a hair surface of the magic buckle 43, and the hair surface and the hook surface of the magic buckle 43 are bonded.
[0065] It can be understood that after the chest of the crossbred goose is limited by the chest limiting mechanism 3, the two shanks of the crossbred goose are placed between the vertical plate side of the L-shaped plate 41 and the limiting belt 44, and then the limiting belt 44 is pulled tight and connected with the other vertical plate side of the L-shaped plate 41 through the magic buckle 43, so that the two shanks of the crossbred goose are clamped by the silica gel pad I 42 cooperating with the silica gel pad II 45, the movement of the two shanks of the crossbred goose is limited, and the clamping mode of the silica gel pad I 42 cooperating with the silica gel pad II 45 can avoid scratching the shanks of the crossbred goose.
[0066] As shown in Figures 4-5 the wing clamping mechanism 5 comprises:
[0067] The T-shaped plate 51 is fixedly connected to the operation table 1.
[0068] The tail end of the clamping plate I 52 is connected to the T-shaped plate 51, the head of the clamping plate I 52 is fixedly connected with the silica gel pad III 53, and the tail of the clamping plate I 52 is integrally provided with a limiting seat 54, and the limiting seat 54 is provided with a limiting hole I.
[0069] The clamping plate II 55 is hinged to the clamping plate I 52 through the shaft rod 56, the head of the clamping plate II 55 is fixedly connected with the silica gel pad IV 57, and the tail of the clamping plate II 55 is integrally provided with an arc-shaped limiting plate 58, and a plurality of limiting holes II 59 are symmetrically arranged on the arc-shaped limiting plate 58.
[0070] The torsional spring is arranged on the shaft rod 56, one end of the torsional spring abuts against the clamping plate I 52, and the other end of the torsional spring abuts against the clamping plate II 55.
[0071] The pin 510 is arranged in any one of the limiting hole II 59 and the limiting hole I.
[0072] It can be understood that when the goose wing is limited, the goose wing on the upper side of the crossbred goose is unfolded, the tail of the clamping plate II 55 is then pressed downward, so that the head of the clamping plate II 55 is away from the head of the clamping plate I 52 after the torsional spring is contracted, the unfolded goose wing is then placed between the head of the clamping plate I 52 and the head of the clamping plate II 55, the pressing on the tail of the clamping plate is then released, the clamping plate II 55 is reset under the action of the torsional spring, so that the silica gel pad III 53 and the silica gel pad IV 57 abut against the two end faces of the goose wing respectively, the pin 510 is then arranged in the limiting hole II 59 corresponding to the limiting hole I, and the limiting hole II 59 is arranged in the limiting hole II 59, the arc-shaped limiting plate 58 and the limiting seat 54 are connected through the pin 510, so that the posture of the clamping plate II 55 on the clamping plate I 52 is fixed, the positions of the silica gel pad III 53 and the silica gel pad IV 57 are fixed, the goose wing is limited, and the goose wing on the upper side is kept in the unfolded state.
[0073] As Figure 5 shown, the vertical plate of the T-shaped plate 51 is provided with a sliding groove 511, the sliding groove 511 is slidably connected with a moving seat 512, the tail end of the clamping plate I 52 is fixedly connected with the moving seat 512, the vertical plate of the T-shaped plate 51 is provided with a waist-shaped hole 513, the moving seat 512 is threadedly connected with a handle bolt 514, the handle bolt 514 is arranged in the waist-shaped hole 513, the handle bolt 514 is integrally provided with an abutting plate 515, the abutting plate 515 is fixedly connected with a rubber pad 516, and the rubber pad 516 is abutted with the other side of the vertical plate of the T-shaped plate 51.
[0074] It can be understood that after different hybrid geese are fixed on the arc-shaped plate 2 in a lateral position, the heights of the wings of the geese on the upper side are different; therefore, when the clamping plate I 52 is slidably connected on the vertical plate of the T-shaped plate 51 and the wings of the geese are limited, the handle bolt 514 is loosened, the moving seat 512 is slid in the sliding groove 511 by sliding the handle bolt 514 in the waist-shaped hole 513, the moving seat 512 drives the clamping plate I 52 to be adjusted in height, the height position of the clamping plate I 52 is adjusted, the handle bolt 514 is tightened after the adjustment is completed, the abutting plate 515 is pressed against the rubber pad 516 and the vertical plate of the T-shaped plate 51, and the moving seat 512 is clamped in the sliding groove 511, so that the height position of the clamping plate I 52 is fixed, and then the wings of the hybrid geese on the upper side are unfolded and limited.
[0075] The preferred embodiments of the utility model are described above, and are not used to limit the utility model, and the utility model can be changed and varied for those skilled in the art. Any modification, equivalent replacement, improvement and the like within the spirit and principle of the utility model should be included in the protection scope of the utility model.
[0076] The above is only a specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be limited by the protection scope of the claims.
Claims
1. A device for binding a blood collection set to a goose hypornerial vein, characterized in that The utility model provides a goose wing clamping device, including: Operation platform, the operation platform is provided with arc plate, the arc plate is used for the lateral recumbent placement of goose's torso and is located to one side and applies the limitation of goose wing; The chest limiting mechanism is arranged on the operation table, the chest limiting mechanism is arranged corresponding to the arc plate, the chest limiting mechanism is used for limiting the chest of goose, so that the goose is fixed on the arc plate in the posture of lateral recumbent; Tibia limiting mechanism, the tibia limiting mechanism is arranged on the operation table, the tibia limiting mechanism is used for limiting the tibia of goose; The wing clamping mechanism is arranged on the operation table, the wing clamping mechanism is used for limiting the wing of goose located on the other side.
2. The device according to claim 1, wherein, Also includes head limiting mechanism, the head limiting mechanism includes: U-shaped frame, the U-shaped frame is fixedly connected on the operation table, the inner side of the U-shaped frame is provided with a limiting slot; The bottom of the shielding plate is provided with a limiting port, the limiting port is used for the neck of goose to pass in, the shielding plate is used for shielding the rear view of goose head and limiting the deflection range of goose head.
3. The device according to claim 1, wherein, The chest limiting mechanism includes: Elastic net, the tail end of the elastic net is connected on the operation table through the pressing plate, the pressing plate is located on one side of the arc plate, the head end of the elastic net is connected with the connecting piece; The limiting assembly is arranged on the operation table, the limiting assembly is located on the other side of the arc plate, the connecting piece is detachably connected with the limiting assembly.
4. The device according to claim 3, wherein the device is a goose hypornerial blood collection tourniquet. The connecting piece includes a connecting rod, the peripheral wall of the connecting rod is fixedly connected with the head end of the elastic net, a hooking plate is integrally arranged on the peripheral wall of the connecting rod, and the hooking plate is hookingly connected with the limiting assembly.
5. The device according to claim 4, wherein the device is a goose hypornerial blood collection tourniquet. The limiting assembly includes: The connecting seat is fixedly connected on the operation table; A plurality of U-shaped rods are arranged on the connecting seat, and the hooking plate is hookingly connected with any U-shaped rod.
6. The device according to claim 1, wherein, The tibia limiting mechanism includes: L-shaped plate, the vertical plate of the L-shaped plate is fixedly connected with the silica gel pad I on one side, and the vertical plate of the L-shaped plate is fixedly connected with the hook surface of the magic buckle on the other side; The head end of the limiting belt is fixedly connected with the vertical plate of the L-shaped plate, the limiting belt is located below the silica gel pad I, the head end of the limiting belt is connected with the silica gel pad II, the tail end of the limiting belt is connected with the hair surface of the magic buckle, and the hair surface of the magic buckle is bonded with the hook surface.
7. The device according to claim 1, wherein the device is a goose hypornerial blood collection tourniquet. The wing clamping mechanism includes: T-shaped plate, the T-shaped plate is fixedly connected on the operation table; The tail end of the clamping plate I is connected with the T-shaped plate, the head end of the clamping plate I is fixedly connected with the silica gel pad III, the tail end of the clamping plate I is integrally provided with a limiting seat, and the limiting seat is provided with a limiting hole I; The clamping plate II is hingedly connected with the clamping plate I through the shaft rod, the head end of the clamping plate II is fixedly connected with the silica gel pad IV, and the tail end of the clamping plate II is integrally provided with an arc-shaped limiting plate, and a plurality of limiting holes II are symmetrically arranged on the arc-shaped limiting plate. A torsion spring is arranged on the shaft, one end of the torsion spring abuts against the clamping plate I, and the other end of the torsion spring abuts against the clamping plate II; A spike is arranged in the limiting hole II and the limiting hole I.
8. The device according to claim 7, wherein the device is a goose hypornerial blood collection tourniquet. One side of the vertical plate of the T-shaped plate is provided with a sliding groove, a moving seat is slidably connected in the sliding groove, the tail end of the clamping plate I is fixedly connected with the moving seat, a waist-shaped hole is formed in the vertical plate of the T-shaped plate, a handle bolt is threadedly connected with the moving seat, the handle bolt is arranged in the waist-shaped hole, an abutting plate is integrally arranged on the handle bolt, a rubber pad is fixedly connected with the abutting plate, and the rubber pad abuts against the other side of the vertical plate of the T-shaped plate.