Auxiliary limb exercise device for critical nursing

Abstract

The utility model relates to the field of exercise equipment, and discloses an auxiliary limb exercise device for critical nursing, which comprises two assembly seats fixedly mounted on a sickbed and an auxiliary limb exercise mechanism arranged on the assembly seats, the two assembly seats are symmetrically distributed on two side walls of the sickbed, and the auxiliary limb exercise mechanism is arranged on the assembly seats. Inserting grooves are formed in the tops of the two assembling bases, the auxiliary limb exercise mechanism comprises two stand columns, two locking bolts, two cross beams, a longitudinal beam, a sliding base, a connecting beam, a limb exercise assembly and a locking and fixing assembly, and the bottom ends of the two stand columns are detachably installed and fixed in the inserting grooves through the corresponding locking bolts respectively. The limb rehabilitation training device has the following advantages and effects that the force applied by the limb of a patient to pull the pull ring downwards can be adjusted, and then the limb rehabilitation training device can be flexibly adjusted according to patients with different physical qualities so as to meet the limb rehabilitation training use requirement.

Description

Technical Field

[0001] The utility model relates to the technical field of exercise equipment, in particular to an auxiliary limb exercise device used for critical care. Background Art

[0002] In the intensive care unit, since critically ill patients need to lie in bed for a long time to recover from their injuries, they are prone to muscle weakness and limb movement disorders. In order to avoid this situation, auxiliary limb exercise devices are usually used to allow patients to perform limb rehabilitation exercises. After searching, the patent document with the authorization announcement number CN219375990U announced an auxiliary limb exercise device for critical care patients. The limb exercise device is intended to solve the technical problem that the size of the auxiliary limb exercise device is fixed under the existing technology, so the size of the auxiliary limb exercise device cannot be adjusted according to the width of the bed, which makes the applicability of the auxiliary limb exercise device poor. The limb exercise device includes a first support rod, a second support rod, a clamping mechanism, an elastic rope and a handle. The second support rod is arranged on one side of the first support rod, and the bottom of the first support rod and the second support rod are both installed with a clamping mechanism, and an elastic rope is arranged between the first support rod and the second support rod. The limb exercise device can drive the internal threaded tube to move laterally by rotating the threaded rod, which can drive the first support rod to move laterally, which can drive the clamping mechanism at its bottom to move laterally, so that the distance between the clamping mechanisms can be adjusted to adapt to beds of different sizes.

[0003] In actual use, it was found that the above-mentioned existing scheme still has at least the following shortcomings: when critically ill patients are using it for limb rehabilitation training, since the elastic coefficients of the spring strip and the elastic coefficients of the elastic rope are fixed, the force applied to pull down the patient's limbs cannot be adjusted. Since the physical fitness of different patients is different, the force that the limbs can generate is also different. For patients with less strength, there will be a phenomenon that they cannot pull up or the pulling down distance is short, resulting in that patients with less strength cannot get effective limb rehabilitation exercises. For patients with greater strength, there will be a phenomenon that it is easier to pull down, resulting in that patients with greater strength cannot get effective limb rehabilitation exercises. Furthermore, it is impossible to flexibly adjust according to patients with different physical fitness to meet the needs of limb rehabilitation exercises. Therefore, we propose an auxiliary limb exercise device for critical care to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide an auxiliary limb exercise device for critical care, which can adjust the force applied by pulling the pull ring down on the patient's limbs, and can be flexibly adjusted according to patients with different physical fitness to meet the effect of limb rehabilitation exercise.

[0005] The above technical objectives of the utility model are achieved through the following technical solutions: an auxiliary limb exercise device for critical care, comprising an assembly seat fixed on a hospital bed and an auxiliary limb exercise mechanism arranged on the assembly seat, wherein the number of the assembly seats is two, the two assembly seats are symmetrically distributed on the two side walls of the hospital bed, the tops of the two assembly seats are provided with slots, the auxiliary limb exercise mechanism comprises two columns, two locking bolts, two cross beams, a longitudinal beam, a sliding seat, a connecting beam, a limb exercise component and a locking and fixing component, the bottom ends of the two columns are respectively locked by corresponding locking bolts The detachable installation is fixed in the slot, the two cross beams are respectively fixedly installed on the top of the corresponding columns, the two sides of the longitudinal beam are respectively fixedly connected to the ends of the two cross beams close to each other, a rectangular sliding hole is opened on the top of the longitudinal beam, the sliding seat is slidably installed in the rectangular sliding hole, the top and bottom of the sliding seat both pass through the rectangular sliding hole, the connecting beam is fixedly installed on the bottom of the sliding seat, the number of limb exercise components is set to two, the two limb exercise components are respectively arranged at the two ends of the connecting beam, the limb exercise components are used to assist patients in exercising limbs, the locking and fixing components are arranged on the top of the sliding seat, and the locking and fixing components are used to lock and fix the sliding seat.

[0006] The utility model is further configured as follows: the limb exercise component includes a fixed column, a skateboard, a first spring, a pull rope, a pull ring and an adjusting piece; the fixed column is fixedly installed at one end of the connecting beam; a mounting cavity is provided in the fixed column; the skateboard is slidably installed in the mounting cavity; the top end of the first spring is fixedly connected to the bottom of the skateboard; the bottom end of the first spring is fixedly connected to the bottom inner wall of the mounting cavity; the top end of the pull rope is fixedly connected to the bottom of the skateboard; the first spring is sleeved on the pull rope; a threading hole is provided on the bottom inner wall of the mounting cavity; the bottom end of the pull rope passes through the threading hole; the pull ring is provided at the bottom end of the pull rope; the adjusting piece is provided at the top of the fixed column; and the adjusting piece is used to adjust the compression amount of the first spring.

[0007] The utility model is further configured as follows: the adjusting member includes a top block, a screw rod and a knob, a threaded hole is opened on the top inner wall of the installation cavity, the bottom end thread of the screw rod passes through the threaded hole, the top block is fixedly installed on the bottom end of the screw rod, the bottom of the top block contacts the top of the slide plate, and the knob is fixedly installed on the top end of the screw rod.

[0008] The utility model is further configured as follows: a vertical guide rod is fixedly installed in the installation cavity, and the slide plate is slidably sleeved on the vertical guide rod.

[0009] The utility model is further configured as follows: the pull ring includes a hand handle and a hanging foot strap, the top of the hand handle is fixedly connected to the bottom end of the pull rope, and the two ends of the hanging foot strap are respectively fixedly connected to the outer walls of both sides of the hand handle.

[0010] The utility model is further configured as follows: the locking and fixing assembly includes a fixed plate, two positioning rods, a pull plate, a semicircular ring and a second spring; the fixed plate is fixedly mounted on the top of the sliding seat; the bottom end of the second spring is fixedly connected to the top of the fixed plate; the pull plate is fixedly mounted on the top of the second spring; the semicircular ring is fixedly mounted on the top of the pull plate; the two positioning rods are respectively fixedly mounted on both sides of the bottom of the pull plate; two vertical holes are provided on the top of the fixed plate; the bottom ends of the two positioning rods slide through the corresponding vertical holes respectively; a plurality of positioning grooves are provided on the top of the longitudinal beam; the plurality of positioning grooves are distributed in two rows with equal spacing; the bottom ends of the two positioning rods are respectively slidably mounted in the corresponding positioning grooves.

[0011] The utility model is further configured as follows: a transverse guide rod is fixedly installed in the rectangular sliding hole, and the slide seat is slidably sleeved on the transverse guide rod.

[0012] The utility model includes at least one of the following beneficial technical effects:

[0013] The utility model utilizes a limb exercise component composed of a fixed column, a slide plate, a first spring, a pull rope, a pull ring and an adjusting piece. Under the cooperation of two limb exercise components, the utility model can be used to assist patients in performing limb rehabilitation exercises.

[0014] The utility model utilizes an adjusting member composed of a top block, a screw rod and a knob to adjust the compression amount of the first spring, thereby adjusting the force applied by the pull ring to pull down the patient's limbs. It can be flexibly adjusted according to patients with different physical fitness to meet the needs of limb rehabilitation training.

[0015] The utility model utilizes a locking and fixing assembly composed of a fixing plate, two positioning rods, a pulling plate, a semicircular ring and a second spring, so as to facilitate the movement and adjustment and locking and fixing of the position of the limb exercise assembly. The limb exercise assembly will not shift during use, thereby facilitating the rehabilitation exercise of the patient's upper limbs (arms) or the rehabilitation exercise of the patient's lower limbs (legs).

[0016] The utility model utilizes the hand grip handle so that the patient can hold the hand grip handle with the palm of his hand to perform arm rehabilitation exercises, and utilizes the foot suspension strap so that the patient can put his feet or legs on the foot suspension strap to perform leg rehabilitation exercises.

[0017] The utility model adopts a locking bolt to insert and fix the bottom end of the column in the slot, so as to facilitate the flexible disassembly and assembly of the column, thereby being able to install and fix the auxiliary limb exercise mechanism on the bed or disassemble and remove the auxiliary limb exercise mechanism from the bed, and having the effect of flexible disassembly and assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of this embodiment.

[0019] Figure 2 It is a schematic diagram of the main cross-sectional structure of this embodiment.

[0020] Figure 3 yes Figure 2 Schematic diagram of the enlarged structure of part A.

[0021] Figure 4 yes Figure 2 Schematic diagram of the enlarged structure of part B.

[0022] In the figure, 1, assembly seat; 2, slot; 3, column; 4, locking bolt; 5, crossbeam; 6, longitudinal beam; 7, rectangular sliding hole; 8, slide seat; 9, connecting beam; 10, fixed column; 11, installation cavity; 12, slide plate; 13, first spring; 14, pull rope; 15, threading hole; 16, pull ring; 161, hand handle; 162, hanging foot strap; 17, top block; 18, screw rod; 19, knob; 20, fixed plate; 21, positioning rod; 22, pull plate; 23, semicircular ring; 24, second spring; 25, positioning groove; 26, horizontal guide rod. DETAILED DESCRIPTION

[0023] The technical solution of the utility model will be described clearly and completely below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 The utility model provides an auxiliary limb exercise device for critical care, comprising an assembly seat 1 fixed on a hospital bed and an auxiliary limb exercise mechanism arranged on the assembly seat 1. There are two assembly seats 1, which are symmetrically distributed on both side walls of the hospital bed. A slot 2 is provided on the top of the two assembly seats 1, wherein:

[0025] The auxiliary limb exercise mechanism includes two columns 3, two locking bolts 4, two cross beams 5, a longitudinal beam 6, a slide seat 8, a connecting beam 9, a limb exercise component and a locking and fixing component. The bottom ends of the two columns 3 are detachably installed and fixed in the slots 2 by corresponding locking bolts 4. The bottom ends of the columns 3 are plugged and fixed in the slots 2 by using locking bolts 4 to facilitate flexible disassembly and assembly of the columns 3, so that the auxiliary limb exercise mechanism can be installed and fixed on the bed or removed from the bed, so as to assist the patients in limb rehabilitation exercises during the care of critically ill patients. The two cross beams 5 are fixedly installed on the top ends of the corresponding columns 3, and the two sides of the longitudinal beam 6 are fixedly connected to the ends of the two cross beams 5 close to each other. A rectangular sliding hole 7 is provided at the top of the longitudinal beam 6, and the slide seat 8 is slidably installed in the rectangular sliding hole 7. The top and bottom of the slide seat 8 both pass through the rectangular sliding hole 7. The connecting beam 9 is fixedly installed at the bottom of the slide seat 8. The number of limb exercise components is set to two, and the two limb exercise components are respectively arranged at the two ends of the connecting beam 9. The limb exercise components are used to assist the patient in exercising the limbs. The above-mentioned limb exercise components include a fixed column 10, a slide plate 12, a first spring 13, a pull rope 14, a pull ring 16 and an adjusting member. The fixed column 10 is fixedly installed at one end of the connecting beam 9, and an installation cavity 11 is provided in the fixed column 10. The slide plate 12 is slidably installed in the installation cavity 11. The top end of the first spring 13 is fixedly connected to the bottom of the slide plate 12, and the bottom end of the first spring 13 is connected to the installation cavity 1 1 is fixedly connected to the bottom inner wall of the installation cavity 11, the top of the pull rope 14 is fixedly connected to the bottom of the slide plate 12, the first spring 13 is sleeved on the pull rope 14, and a threading hole 15 is opened on the bottom inner wall of the installation cavity 11. The bottom end of the pull rope 14 passes through the threading hole 15, and a pull ring 16 is arranged at the bottom end of the pull rope 14. The pull ring 16 can be used to pull the pull rope 14 to move downward, so that the pull rope 14 drives the slide plate 12 to slide downward, and the first spring 13 will be compressed and deformed by force, and then through the elastic force of the first spring 13 itself, the patient's limbs can be forced to perform rehabilitation exercises. The pull ring 16 includes a hand grip 161 and a sling 162. The top of the hand grip 161 is fixedly connected to the bottom end of the pull rope 14, and the two ends of the sling 162 are respectively connected to the outer sides of the hand grip 161. The foot strap 162 is used to place the patient's feet or legs on the foot strap 162 for leg rehabilitation exercises. It should be added that the foot strap 162 is made of nylon rope and has a certain width, so that the foot strap 162 has the advantages of being soft, strong and wear-resistant, and the patient's feet or legs will not feel pain when they are placed on the foot strap 162 and force is applied downward. The adjusting member is arranged on the top of the fixing column 10, and the adjusting member is used to adjust the compression amount of the first spring 13. The adjusting member includes a top block 17, a screw rod 18 and a knob 19. A threaded hole is provided on the top inner wall of the mounting cavity 11, and the bottom end thread of the screw rod 18 passes through the threaded hole.The top block 17 is fixedly mounted on the bottom end of the screw rod 18, and the bottom of the top block 17 contacts the top of the slide 12. The knob 19 is fixedly mounted on the top of the screw rod 18. The screw rod 18 can be easily rotated by the knob 19, and the screw rod 18 can be controlled to drive the top block 17 to move up or down. The top block 17 can be used to push the slide 12 downward, and the compression amount of the first spring 13 can be adjusted, that is, the force applied by the pull ring 16 to the patient's limbs can be adjusted. It can be flexibly adjusted according to patients with different physical fitness to meet the use of limb rehabilitation exercises. The locking and fixing component is set on the top of the slide 8, and the locking and fixing component is used to lock and fix the slide 8.

[0026] In this embodiment, the locking and fixing assembly includes a fixing plate 20, two positioning rods 21, a pulling plate 22, a semicircular ring 23 and a second spring 24. The fixing plate 20 is fixedly mounted on the top of the sliding seat 8, and the bottom end of the second spring 24 is fixedly connected to the top of the fixing plate 20. The pulling plate 22 is fixedly mounted on the top of the second spring 24, and the semicircular ring 23 is fixedly mounted on the top of the pulling plate 22. The two positioning rods 21 are respectively fixedly mounted on both sides of the bottom of the pulling plate 22. Two vertical holes are provided on the top of the fixing plate 20, and the bottom ends of the two positioning rods 21 slide through the corresponding vertical holes respectively. A plurality of positioning grooves 25 are provided on the top of the longitudinal beam 6, and the plurality of positioning grooves 25 are distributed in two rows with equal spacing. The bottom ends of the positioning rods 21 are slidably installed in the corresponding positioning grooves 25 respectively, and the semicircular ring 23 is used to facilitate the upward lifting of the pull plate 22 and the two positioning rods 21. The two positioning rods 21 are respectively slidably plugged into the corresponding positioning grooves 25 to lock and fix the position of the slide 8. During use, the slide 8 will not cause the two limb exercise components to move. The elastic force of the second spring 24 can be used to control the pull plate 22 to drive the semicircular ring 23 and the two positioning rods 21 to automatically reset. By setting a plurality of positioning grooves 25 distributed in two rows with equal intervals, the position of the slide 8 can be adjusted and locked, thereby facilitating rehabilitation exercises for the patient's arms or legs according to usage requirements.

[0027] In this embodiment, a vertical guide rod is fixedly installed in the installation cavity 11, and the slide plate 12 is slidably mounted on the vertical guide rod to guide the sliding direction of the slide plate 12, so that the slide plate 12 can slide smoothly and stably in the vertical direction in the installation cavity 11.

[0028] In this embodiment, a transverse guide rod 26 is fixedly installed in the rectangular sliding hole 7, and the slide seat 8 is slidably sleeved on the transverse guide rod 26 to guide the sliding direction of the slide seat 8, so that the slide seat 8 can slide smoothly and horizontally in the rectangular sliding hole 7.

[0029] Through the above structure, the auxiliary limb exercise device for critical care provided by the utility model can adjust the force applied by the pull ring 16 to the patient's limbs when in use, and then can be flexibly adjusted according to patients with different physical fitness to meet the use of limb rehabilitation exercise. During specific operation, the medical staff inserts the bottom ends of the two columns 3 into the corresponding slots 2 respectively, and uses two locking bolts 4 to lock and fix the bottom ends of the two columns 3 respectively, thus completing the stable erection of the auxiliary limb exercise mechanism on the bed. When the patient's upper limbs (arms) are subjected to rehabilitation exercise, the semicircular ring 23 is first pulled upward so that the semicircular ring 23 drives the pull plate 22 and the two positioning rods 21 to move upward, and the second spring 24 is stretched to generate elastic force, and the bottom ends of the two positioning rods 21 are respectively pulled out of the corresponding positioning grooves 25, keeping the height position of the semicircular ring 23 unchanged, and the slide seat 8 can be pushed to slide linearly in the rectangular slide hole 7, so that when the two auxiliary limb exercise components move to a suitable position close to the patient's arm, the semicircular ring 23 is released, and the elastic force of the second spring 24 is released. The pull plate 22 can be controlled to drive the semicircular ring 23 and the two positioning rods 21 to automatically move down and reset. At this time, the bottom ends of the two positioning rods 21 are respectively inserted into the corresponding positioning grooves 25 directly below them. Then the patient's two palms respectively hold the corresponding hand grips 161 and apply force to pull down. The pull rope 14 of the hand grip 161 drives the slide plate 12 to slide down vertically. The first spring 13 is compressed and deformed by the force. After the hand grip 161 is pulled down a certain distance, the arm slowly unloads the force. Under the elastic force of the first spring 13, the slide plate 12 can be controlled to drive the pull rope 1 4 and the hand grip 161 automatically move upward and reset, and then by repeatedly pulling down the hand grip 161 and unloading the force multiple times, the patient can be assisted in arm rehabilitation exercises. When the patient's lower limbs (legs) are to be rehabilitated, the two auxiliary limb exercise components are first adjusted and fixed to a suitable position close to the patient's legs according to the above operation steps, and then the patient's feet are respectively passed through the corresponding foot straps 162. The patient uses the leg strength to repeatedly pull down the foot straps 162 and unload the force multiple times, so as to assist the patient in leg rehabilitation exercises;

[0030] When the patient is using it for limb rehabilitation training, by rotating the knob 19 clockwise, the knob 19 drives the screw rod 18 to rotate clockwise and move downward, and the screw rod 18 pushes the slide plate 12 to slide vertically through the top block 17, and the first spring 13 is gradually compressed. At this time, the compression amount of the first spring 13 gradually increases, and the downward force applied to the pull ring 16 by the patient during exercise is increased. Similarly, by rotating the knob 19 counterclockwise, the knob 19 drives the screw rod 18 to rotate counterclockwise and move upward, and the screw rod 18 drives the top block 17 to move upward. Under the elastic force of the first spring 13, the initial compression amount of the first spring 13 is reduced at this time, and the downward force applied to the pull ring 16 by the patient during exercise is smaller, which makes it easier to adjust the compression amount of the first spring 13, that is, the force applied to the pull ring 16 under the patient's limbs can be adjusted, and it can be flexibly adjusted according to patients with different physical fitness to meet the use of limb rehabilitation training.

Claims

1. An auxiliary limb exercise device for critical care, characterized in that: The invention comprises an assembly seat (1) mounted and fixed on a hospital bed and an auxiliary limb exercise mechanism arranged on the assembly seat (1), wherein the number of the assembly seats (1) is two, and the two assembly seats (1) are symmetrically distributed on the two side walls of the hospital bed, and the tops of the two assembly seats (1) are each provided with a slot (2), and the auxiliary limb exercise mechanism comprises two columns (3), two locking bolts (4), two cross beams (5), a longitudinal beam (6), a sliding seat (8), a connecting beam (9), a limb exercise component and a locking and fixing component, wherein the bottom ends of the two columns (3) are respectively detachably mounted and fixed in the slots (2) by corresponding locking bolts (4), and the two cross beams (5) are respectively fixedly mounted on the corresponding columns ( 3), the two sides of the longitudinal beam (6) are respectively fixedly connected to the ends of the two cross beams (5) close to each other, the top of the longitudinal beam (6) is provided with a rectangular sliding hole (7), the sliding seat (8) is slidably installed in the rectangular sliding hole (7), the top and bottom of the sliding seat (8) both pass through the rectangular sliding hole (7), the connecting beam (9) is fixedly installed at the bottom of the sliding seat (8), the number of the limb exercise components is set to two, the two limb exercise components are respectively arranged at the two ends of the connecting beam (9), the limb exercise components are used to assist the patient in exercising the limbs, the locking and fixing components are arranged at the top of the sliding seat (8), and the locking and fixing components are used to lock and fix the sliding seat (8).

2. The auxiliary limb exercise device for critical care according to claim 1, characterized in that: The limb exercise assembly comprises a fixed column (10), a slide plate (12), a first spring (13), a pull rope (14), a pull ring (16) and an adjusting member, wherein the fixed column (10) is fixedly mounted on one end of the connecting beam (9), a mounting cavity (11) is provided in the fixed column (10), the slide plate (12) is slidably mounted in the mounting cavity (11), the top end of the first spring (13) is fixedly connected to the bottom end of the slide plate (12), and the bottom end of the first spring (13) is slidably mounted in the mounting cavity (11). The top end of the pull rope (14) is fixedly connected to the bottom inner wall of the slide plate (12); the first spring (13) is sleeved on the pull rope (14); a threading hole (15) is provided on the bottom inner wall of the installation cavity (11); the bottom end of the pull rope (14) passes through the threading hole (15); the pull ring (16) is arranged at the bottom end of the pull rope (14); the adjusting member is arranged at the top of the fixing column (10); and the adjusting member is used to adjust the compression amount of the first spring (13).

3. The auxiliary limb exercise device for critical care according to claim 2, characterized in that: The adjusting member comprises a top block (17), a screw rod (18) and a knob (19); a threaded hole is provided on the top inner wall of the mounting cavity (11); a bottom end thread of the screw rod (18) passes through the threaded hole; the top block (17) is fixedly mounted on the bottom end of the screw rod (18); the bottom of the top block (17) contacts the top of the slide plate (12); and the knob (19) is fixedly mounted on the top end of the screw rod (18).

4. The auxiliary limb exercise device for critical care according to claim 2, characterized in that: A vertical guide rod is fixedly mounted in the mounting cavity (11), and the slide plate (12) is slidably sleeved on the vertical guide rod.

5. The auxiliary limb exercise device for critical care according to claim 2, characterized in that: The pull ring (16) comprises a handle (161) and a hanging strap (162), the top of the handle (161) being fixedly connected to the bottom of the pull rope (14), and the two ends of the hanging strap (162) being fixedly connected to the outer walls of both sides of the handle (161), respectively.

6. The auxiliary limb exercise device for critical care according to claim 1, characterized in that: The locking and fixing assembly comprises a fixing plate (20), two positioning rods (21), a pulling plate (22), a semicircular ring (23) and a second spring (24), wherein the fixing plate (20) is fixedly mounted on the top of the sliding seat (8), the bottom end of the second spring (24) is fixedly connected to the top of the fixing plate (20), the pulling plate (22) is fixedly mounted on the top of the second spring (24), the semicircular ring (23) is fixedly mounted on the top of the pulling plate (22), the two positioning rods (21) are respectively fixedly mounted on both sides of the bottom of the pulling plate (22), the top of the fixing plate (20) is provided with two vertical holes, the bottom ends of the two positioning rods (21) respectively slide through the corresponding vertical holes, the top of the longitudinal beam (6) is provided with a plurality of positioning grooves (25), the plurality of positioning grooves (25) are distributed in two rows at equal intervals, and the bottom ends of the two positioning rods (21) are respectively slidably mounted in the corresponding positioning grooves (25).

7. The auxiliary limb exercise device for critical care according to claim 1, characterized in that: A transverse guide rod (26) is fixedly installed in the rectangular sliding hole (7), and the sliding seat (8) is slidably sleeved on the transverse guide rod (26).

Images