Traction device

Abstract

The invention discloses a traction device which comprises a support, a pulley block, a balance weight part, a pull rope and a tension adjusting part. The support comprises a bottom plate, a top rod and two supporting rods arranged on the bottom plate in parallel. The ejector rod is connected to the tops of the two supporting rods. And the pulley block is arranged on the ejector rod. And the pull rope is arranged on the counterweight piece. The pull rope penetrates through the pulley block, and a user can pull the counterweight part to ascend or descend by pulling the end of the pull rope. The number of the tension adjusting pieces is two, the two tension adjusting pieces are oppositely arranged on the bottom plate, tightly pressed on the left side and the right side of the balance weight piece and connected with the balance weight piece and the tension adjusting pieces in an up-down sliding mode, and the pressure of the tension adjusting pieces tightly pressed on the balance weight piece can be adjusted. According to the traction device, the traction force can be adjusted without additionally arranging a counterweight piece, so that the training cost is greatly reduced. Meanwhile, due to the fact that the number of the balance weight pieces is small, safety can be greatly improved.

Description

Technical Field

[0001] The present invention particularly relates to a pulling device. Background Art

[0002] Orthopedic traction is one of the commonly used rehabilitation methods in orthopedics. When it is implemented, it is generally connected to a heavy object through a lever bracket, and the gravity of the heavy object is pulled up or down by pulling the heavy object. Traction can be said to be a necessary remedy for the preoperative and postoperative treatment of various orthopedic injuries and degenerative diseases.

[0003] Although the traditional traction method can play a stretching role, when this method is used, when the pulling force needs to be changed, the gravity of the weight is generally changed to achieve the effect of adjusting the pulling force. This method requires the preparation of counterweights of different weight levels, which not only increases the cost, but also, because the gravity of the weight is fixed, the patient cannot adjust the pulling force at will according to his own situation, which affects the traction effect. Summary of the invention

[0004] In view of the shortcomings of the prior art, the technical problem to be solved by the present invention is to provide a pulling device that can adjust the pulling force without adding additional weights, thereby greatly reducing the training cost. At the same time, the device can greatly improve safety due to the small number of weights.

[0005] In order to achieve the above object, the present invention is implemented through the following technical solutions: a pulling device, comprising:

[0006] A bracket, comprising a bottom plate, a top rod and two support rods arranged in parallel on the bottom plate, wherein the top rod is connected to the tops of the two support rods;

[0007] A pulley block is arranged on the top rod;

[0008] Counterweight;

[0009] A pull rope is provided on the counterweight, the pull rope passes through the pulley block, and a user can pull the counterweight up or down by pulling the end of the pull rope; and

[0010] There are two groups of tension adjusting members, which are arranged on the bottom plate opposite to each other and pressed on the left and right sides of the counterweight. The counterweight and the tension adjusting members are connected to each other in a sliding manner up and down, and the pressure of the tension adjusting members pressed on the counterweight can be adjusted.

[0011] Furthermore, the tension adjustment member includes a mounting plate, a friction plate, an elastic connecting member and a distance adjustment member, the mounting plate and the friction plate are arranged perpendicular to the ground, and the friction plate is equivalent to the mounting plate located on the side close to the counterweight member, the elastic connecting member is connected between the mounting plate and the friction plate, the distance adjustment member is connected to the mounting plate, and can drive and adjust the mounting plate to move closer to or away from the counterweight member, the counterweight member includes a counterweight body and two clamping members, the two clamping members are relatively fixed on the sides of the counterweight body, and in the process of the counterweight member rising, the two clamping members can be pressed on the friction plate on the same side of the friction plate.

[0012] Furthermore, the clamping member includes a baffle, a pressure rod and a pressure plate, the baffle is fixed to the side wall of the counterweight member, the pressure rod is arranged on the baffle close to the baffle and is located above the baffle relative to the ground, one end of the pressure rod is hinged to the counterweight member, in the absence of external force, the pressure rod overlaps the baffle, and the other end of the pressure plate is hinged to the pressure plate, when the friction plate is pressed against the pressure plate, the pressure plate can slide along the surface of the friction plate.

[0013] Furthermore, it also includes a forced reset structure, which is connected to the friction plate. When the counterweight component descends to the ground, it can drive the friction plate to move toward the mounting plate until the friction plate is separated from the pressure plate.

[0014] Furthermore, the forced reset structure includes a first magnetic part and an electromagnet. The first magnetic part is embedded in the two friction plates, and the electromagnet is arranged in the two mounting plates. When the electromagnet is energized, the electromagnet can generate magnetism opposite to that of the first magnetic part. The switch of the electromagnet is a pressure contact switch. When the counterweight part drops to the lowermost end, it can press the switch contact of the electromagnet so that the switch of the electromagnet is in a energized state.

[0015] Furthermore, the distance adjusting member includes a bidirectional screw and a rotational power source, the bidirectional screw is laterally connected between the two mounting plates, the threads at both ends of the bidirectional screw rotate in opposite directions, the two ends of the bidirectional screw are respectively threadedly connected to the two mounting plates, and the rotational power source is connected to the bidirectional screw to drive the bidirectional screw to rotate.

[0016] Furthermore, there are two bidirectional screws, which are respectively located at the top and the bottom. The distance adjusting member also includes a transmission mechanism, which is connected between the two bidirectional screws. Through the transmission mechanism, the rotational power source can drive the two bidirectional screws to rotate simultaneously.

[0017] Furthermore, it also includes a guide rod, which is arranged vertically to the ground and can slide through the counterweight.

[0018] Furthermore, a slide groove is arranged on the bottom plate, and the bottom ends of the mounting plate and the friction plate can be slidably arranged in the slide groove.

[0019] Furthermore, the friction plate is a U-shaped plate, and the pressure plate is located in the U-shaped groove of the U-shaped plate. The beneficial effects of the present invention are:

[0020] The pulling device includes a bracket, a pulley block, a counterweight, a pull rope and a tension adjusting member. The bracket includes a bottom plate, a top rod and two support rods arranged in parallel on the bottom plate. The top rod is connected to the tops of the two support rods. The pulley block is arranged on the top rod. The pull rope is arranged on the counterweight. The pull rope passes through the pulley block, and the user can pull the counterweight up or down by pulling the end of the pull rope. There are two groups of tension adjusting members, and the two tension adjusting members are arranged on the bottom plate opposite to each other and pressed on the left and right sides of the counterweight, and the counterweight and the tension adjusting members can be slidably connected up and down, and the pressure of the tension adjusting members pressing on the counterweight can be adjusted.

[0021] When using, first adjust the pressure of the two tension adjustment parts on the counterweight according to the patient's condition. When the patient pulls the counterweight up and the counterweight slides up and down along the surface of the tension adjustment parts, the pressure is converted into friction. The friction plus the gravity of the counterweight is the pulling force required to pull the counterweight up. In the early stage of use, the pressure can be small. In the later stage of training, the pressing force can be gradually increased to improve the pulling force.

[0022] By adopting the device, the pulling force can be adjusted without adding additional weights, thereby greatly reducing the training cost. At the same time, the device can greatly improve safety due to the small number of weights. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific implementation of the present invention, the following will briefly introduce the drawings required for use in the specific implementation. In all the drawings, each element or part is not necessarily drawn according to the actual scale.

[0024] Figure 1 A schematic diagram of a pulling device provided by an embodiment of the present invention;

[0025] Figure 2 for Figure 1 A schematic diagram of a weight member in a pulling device is shown;

[0026] Figure 3 for Figure 1 A schematic diagram of the cooperation between the friction plate and the pressure plate in the pulling device shown;

[0027] Figure 4 for Figure 1 A schematic diagram of the pulling device when the counterweight is in a descending state;

[0028] Figure 5 for Figure 1 A schematic diagram of a state in which two mounting plates in the pulling device are adjusted to be close together;

[0029] Reference numerals:

[0030] 100, bracket; 200, pulley block; 300, counterweight; 310, counterweight body; 320, pressing member; 321, baffle; 322, pressure rod; 323, pressure plate; 400, pull rope; 500, tension adjustment member; 510, mounting plate; 520, friction plate; 530, elastic connector; 540, distance adjustment member; 541, bidirectional screw; 542, rotary power source; 543, transmission mechanism; 600, forced reset structure; 610, first magnetic member; 620, electromagnet; 630, switch. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the invention is not limited by the specific implementation disclosed below.

[0032] See also Figures 1 to 5 The present invention provides a pulling device, including a bracket 100, a pulley block 200, a counterweight 300, a pull rope 400 and a tension adjusting member 500.

[0033] The bracket 100 includes a bottom plate, a top rod and two support rods arranged in parallel on the bottom plate. The top rod is connected to the tops of the two support rods. The pulley block 200 is arranged on the top rod. The pull rope 400 is arranged on the counterweight 300. The pull rope 400 passes through the pulley block 200, and the user can pull the counterweight 300 up or down by pulling the end of the pull rope 400. There are two groups of tension adjustment members 500, and the two tension adjustment members 500 are arranged on the bottom plate opposite to each other and pressed on the left and right sides of the counterweight 300, and the counterweight 300 and the tension adjustment members 500 can be slidably connected up and down, and the pressure of the tension adjustment members 500 pressed on the counterweight 300 can be adjusted.

[0034] When in use, first adjust the pressure of the two tension adjustment members 500 pressed against the counterweight 300 according to the patient's condition. When the patient pulls the counterweight 300 upward and the counterweight 300 slides up and down along the surface of the tension adjustment member 500, the pressure is converted into friction force. The friction force plus the gravity of the counterweight 300 is the pulling force required to pull the counterweight 300 upward. In the early stage of use, the pressure can be relatively small. In the later stage of training, the pressing force can be gradually increased to improve the pulling force.

[0035] By adopting the device, it is not necessary to add an extra counterweight, and the pulling force can be adjusted, thereby greatly reducing the training cost. At the same time, the device can greatly improve safety because the number of counterweights 300 is small.

[0036] In this embodiment, the tension adjusting member 500 includes a mounting plate 510, a friction plate 520, an elastic connecting member 530 and a distance adjusting member 540. The mounting plate 510 and the friction plate 520 are arranged perpendicular to the ground, and the friction plate 520 is equivalent to the mounting plate 510 located on the side close to the counterweight 300. The elastic connecting member 530 is connected between the mounting plate 510 and the friction plate 520. The distance adjusting member 540 is connected to the mounting plate 510, and can drive and adjust the mounting plate 510 to move toward or away from the counterweight 300. The counterweight 300 includes a counterweight body 310 and two pressing members 320, and the two pressing members 320 are fixed to the sides of the counterweight body 310 relatively. In the process of the counterweight 300 rising, the two pressing members 320 can be pressed on the friction plate 520 on the same side of the friction plate 520.

[0037] When in use, the position of the mounting plate 510 is adjusted by the distance adjusting member 540. When the mounting plate 510 moves toward the counterweight 300, the pressure between the friction plate 520 and the pressing member 320 increases, thereby increasing the pulling force required to drive the counterweight 300 to move.

[0038] In this embodiment, the pressing member 320 includes a baffle 321, a pressure rod 322 and a pressure plate 323. The baffle 321 is fixed to the side wall of the counterweight 300, the pressure rod 322 is arranged on the baffle 321 close to the baffle 321, and is located above the baffle 321 relative to the ground, one end of the pressure rod 322 is hinged to the counterweight 300, and the pressure rod 322 overlaps the baffle 321 when no external force is applied, and the other end of the pressure plate 323 is hinged to the pressure plate 323, and when the friction plate 520 is pressed against the pressure plate 323, the pressure plate 323 can slide along the surface of the friction plate 520.

[0039] When the counterweight 300 is pulled upward, the pressure rod 322 is in a horizontal state and presses the pressure plate 323 against the friction plate 520. The friction between the pressure plate 323 and the friction plate 520 plus the gravity of the entire counterweight 300 is the required pulling force. When the pulling force is released, the counterweight 300 descends due to the effect of gravity, and the pressure rod 322 rotates around the connection with the counterweight 300, so that the pressure applied by the pressure rod 322 on the pressure plate 323 basically disappears, and the counterweight 300 can fall freely. When the counterweight 300 descends to the lowest point, the pull rope 400 is used to pull the counterweight 300 upward again, and the pressure rod 322 drives the pressure plate 323 to press against the friction plate 520 again.

[0040] It should be noted that, in a specific implementation, a pressure sensor can be installed on the surface of the pressure plate 323, and the pressure can be measured by the pressure sensor. At the same time, the distance of the mounting plate 510 is adjusted with reference to the pressure to achieve the purpose of accurately adjusting the traction. In addition, when the pressure plate 323 is small, in a specific implementation, multiple pressing members 320 can be provided on both sides.

[0041] As a preferred embodiment, the device further includes a forced reset structure 600. The forced reset structure 600 is connected to the friction plate 520. When the counterweight 300 descends to the ground, the friction plate 520 can be driven to move toward the mounting plate 510 until the friction plate 520 is separated from the pressure plate 323. When the friction plate 520 is separated from the pressure plate 323, the pressure rod 322 can be rotated to a horizontal position, thereby ensuring that when the friction plate 520 moves toward the center again, the pressure plate 323 can be pressed against the friction plate 520.

[0042] Specifically, the forced reset structure 600 includes a first magnetic member 610 and an electromagnet 620. The first magnetic member 610 is embedded in both friction plates 520, and the electromagnet 620 is disposed in both mounting plates 510. When the electromagnet 620 is powered on, the electromagnet 620 can generate magnetism opposite to that of the first magnetic member 610. The switch 630 of the electromagnet 620 is a pressure contact switch. When the counterweight 300 drops to the lowest end, the switch 630 of the electromagnet 620 can be pressed to contact the switch 630 of the electromagnet 620 so that the switch 630 of the electromagnet 620 is powered on, so that the electromagnet 620 generates magnetism, attracts the first magnetic member 610, and causes the friction plate 520 to retreat relative to the counterweight 300 until it is separated from the pressure plate 323. The pressure rod 322 can rotate freely to a horizontal state. When the counterweight 300 is pulled up again, the power supply of the electromagnet 620 is disconnected, the magnetic force of the electromagnet 620 disappears, and the friction plate 520, under the action of the elastic connecting member 530, moves toward the middle and is pressed against the pressure plate 323 again, thereby ensuring that friction can be generated between the friction plate 520 and the pressure plate 323 during movement.

[0043] In this embodiment, the distance adjustment member 540 includes a bidirectional screw 541 and a rotational power source 542. The bidirectional screw 541 is connected transversely between the two mounting plates 510. The threads at both ends of the bidirectional screw 541 rotate in opposite directions. The two ends of the bidirectional screw 541 are respectively threadedly connected to the two mounting plates 510. The rotational power source 542 is connected to the bidirectional screw 541 and can drive the bidirectional screw 541 to rotate. In a specific implementation, the rotational power source 542 can be a rotary motor commonly used in the prior art, and of course, it can also be other forms of power sources.

[0044] At the beginning of training, the distance between the two mounting plates 510 can be made larger, so that the friction between the friction plate 520 and the pressure plate 323 is smaller. Then, as the training time increases, the distance between the two pressure plates 323 can be gradually reduced, so that the friction is increased, thereby increasing the pulling force required to drive the counterweight 300.

[0045] As a preferred embodiment, the distance adjusting member 540 further includes a transmission mechanism 543. The transmission mechanism 543 is connected between the two bidirectional screw rods 541, and through the transmission mechanism 543, the rotation power source 542 can drive the two bidirectional screw rods 541 to rotate simultaneously.

[0046] By providing the bidirectional screw rods 541 at the top and bottom, the movement stability of the two mounting plates 510 can be improved. The transmission mechanism 543 can be a transmission mechanism such as a chain transmission or a pulley.

[0047] In addition, a slide groove can be provided on the bottom plate, and the bottom ends of the mounting plate 510 and the friction plate 520 can be slidably clamped in the slide groove. The stability of the mounting plate 510 and the friction plate 520 can be further improved by the slide groove.

[0048] In addition, in a specific implementation, the friction plate 520 can also be set as a U-shaped plate, and the pressure plate 323 can be located in the U-shaped groove of the U-shaped plate to prevent the clamping member 320 from sliding left and right. Similarly, a guide rod can also be set on the bottom plate. The guide rod is set vertically to the ground and can slide through the counterweight 300 to further improve the stability of the counterweight 300 during the up and down movement.

[0049] Specific method of using the above pulling device:

[0050] When in use, before use, first adjust the relative distance between the two mounting plates 510 through the bidirectional screw 541 according to the patient's condition. In the early stage of training, the distance can be slightly larger so that the required traction force is smaller. At the same time, before use, the counterweight body 310 is pressed against the switch 630 of the electromagnet 620. At this time, the two friction plates 520 are both moved toward the mounting plate 510. Then the pull rope 400 is passed around the pulley block 200. By repeatedly pulling the pull rope 400, the counterweight is driven to rise or fall. During the rising process, the sum of the friction force between the pressure plate 323 and the friction plate 520 and the gravity of the counterweight is the required pulling force. When descending, the traction force is only the gravity of the counterweight 300.

[0051] In the later stage of training, the distance between the two mounting plates 510 is adjusted to gradually decrease, so that the required traction force is gradually increased to achieve gradual training.

[0052] By adopting the device, no additional counterweight is needed, and the pulling force can be adjusted, thereby greatly improving the training cost. At the same time, the device can greatly improve safety because the number of counterweights 300 is small.

[0053] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A pulling device, characterized in that: include: A bracket, comprising a bottom plate, a top rod and two support rods arranged in parallel on the bottom plate, wherein the top rod is connected to the tops of the two support rods; A pulley block is arranged on the top rod; Counterweight; A pull rope is provided on the counterweight, the pull rope passes through the pulley block, and a user can pull the counterweight up or down by pulling the end of the pull rope; and There are two groups of tension adjusting members, which are arranged on the bottom plate opposite to each other and pressed on the left and right sides of the counterweight. The counterweight and the tension adjusting members are connected to each other in a sliding manner up and down, and the pressure of the tension adjusting members pressed on the counterweight can be adjusted.

2. The pulling device according to claim 1, characterized in that: The tension adjustment member includes a mounting plate, a friction plate, an elastic connecting member and a distance adjustment member. The mounting plate and the friction plate are arranged perpendicular to the ground, and the friction plate is equivalent to the mounting plate located on a side close to the counterweight member. The elastic connecting member is connected between the mounting plate and the friction plate. The distance adjustment member is connected to the mounting plate and can drive and adjust the mounting plate to move closer to or away from the counterweight member. The counterweight member includes a counterweight body and two pressing members. The two pressing members are relatively fixed to the sides of the counterweight body. During the rising process of the counterweight member, the two pressing members can be pressed on the friction plate on the same side of the friction plate.

3. The pulling device according to claim 2, characterized in that: The clamping member includes a baffle, a pressure rod and a pressure plate, the baffle is fixed to the side wall of the counterweight, the pressure rod is arranged on the baffle close to the baffle and is located above the baffle relative to the ground, one end of the pressure rod is hinged to the counterweight, and in the absence of external force, the pressure rod overlaps the baffle, and the other end of the pressure plate is hinged to the pressure plate, when the friction plate is pressed against the pressure plate, the pressure plate can slide along the surface of the friction plate.

4. The pulling device according to claim 3, characterized in that: It also includes a forced reset structure, which is connected to the friction plate. When the counterweight descends to the ground, it can drive the friction plate to move toward the mounting plate until the friction plate is separated from the pressure plate.

5. The pulling device according to claim 4, characterized in that: The forced reset structure includes a first magnetic part and an electromagnet. The first magnetic part is embedded in the two friction plates, and the electromagnet is arranged in the two mounting plates. When the electromagnet is energized, the electromagnet can generate magnetism opposite to that of the first magnetic part. The switch of the electromagnet is a pressure contact switch. When the counterweight part drops to the lowermost end, the switch contact of the electromagnet can be pressed so that the switch of the electromagnet is in a energized state.

6. The pulling device according to claim 2, characterized in that: The distance adjusting member includes a bidirectional screw and a rotational power source. The bidirectional screw is laterally connected between the two mounting plates. The threads at both ends of the bidirectional screw rotate in opposite directions. The two ends of the bidirectional screw are respectively threadedly connected to the two mounting plates. The rotational power source is connected to the bidirectional screw and can drive the bidirectional screw to rotate.

7. The pulling device according to claim 6, characterized in that: There are two bidirectional screws, which are respectively located at the top and bottom of the bracket. The distance adjustment member also includes a transmission mechanism, which is connected between the two bidirectional screws. Through the transmission mechanism, the rotational power source can drive the two bidirectional screws to rotate simultaneously.

8. The pulling device according to claim 5, characterized in that: It also includes a guide rod, which is vertically arranged on the ground and can slide through the counterweight.

9. The pulling device according to claim 2, characterized in that: The bottom plate is provided with a slide groove, and the bottom ends of the mounting plate and the friction plate can be slidably clamped in the slide groove.

10. The pulling device according to claim 3, characterized in that: The friction plate is a U-shaped plate, and the pressure plate is located in the U-shaped groove of the U-shaped plate.

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