Emergency rescue variable stroke jack

Abstract

The utility model relates to a variable stroke jack for emergency rescue, which belongs to the technical field of jacks and comprises a jack body and a top core, the jack body is semi-cylindrical, the top core is positioned in the center of the jack body, and two butt-joint pin holes are arranged on the rectangular side surface of the jack body. According to the variable-stroke jack for emergency rescue, the jack bodies are arranged to be semi-cylindrical, the two jack bodies are connected through the butt-joint pin holes and the butt-joint plug pins, the top core of the lower jack is clamped to one side of the upper jack through the fixed clamping block and the movable clamping block, and a plurality of same jacks can be combined together; under the condition that the occupied area of the jack is not increased, the stroke of the jack is increased, and the problems that in the emergency rescue process, field conditions are very complex, landforms are different, positions are different, heights or widths are different, rescue objects are different, object structures are different, and an existing single jack is difficult to meet field requirements are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of jacks, in particular to an emergency rescue variable-stroke jack. Background Art

[0002] A jack is a lightweight lifting device that uses a rigid lifting member as a working device and lifts heavy objects within a small stroke via a top support or bottom claws. It is widely used in factories, mines, transportation and other fields for vehicle repair and other lifting and supporting work. Among them, the screw jack uses a screw or a lifting sleeve driven by a screw as a rigid lifting member. Its advantage is that it can support heavy objects for a long time, and its maximum lifting capacity has reached 100 tons. Rack jacks use a rack as a rigid lifting member and are generally used in mechanical maintenance work. Due to its small lifting capacity, its operation is relatively laborious. In addition, hydraulic jacks are a type of jack that works based on the Pascal principle. They have a compact structure, stable operation, and self-locking function, so they are widely used. However, their disadvantages are limited lifting height and slow lifting speed.

[0003] Hydraulic jacks are based on Pascal's principle, which states that pressure is uniform everywhere in a liquid. A small piston applies pressure, which the liquid transmits to a larger piston, thereby transferring and transforming force. Common hydraulic jacks utilize this principle to achieve lifting. The principle of a screw jack is that by reciprocating the handle, the claws push the ratchet wheel back and forth, and the small bevel gear drives the large bevel gear, rotating the lifting screw, thereby raising or lowering the lifting sleeve and achieving the lifting force.

[0004] Common jacks have fixed strokes. However, during emergency rescue, the conditions on site are often very complex, with different topography, locations, heights or widths, rescue targets, and object structures. It is difficult for a single jack to meet the needs of the site. In view of this, the present application proposes an emergency rescue variable stroke jack. Utility Model Content

[0005] In response to the shortcomings of the existing technology, the utility model provides an emergency rescue variable stroke jack, which has the advantages of being able to quickly combine multiple jacks and increase the jack stroke. It solves the problem that during emergency rescue, the conditions on the scene are often very complicated, with different terrain, different positions, different heights or widths, different rescue objects, and different object structures. It is difficult for a single jack to meet the needs of the scene.

[0006] To achieve the above-mentioned object, the utility model provides the following technical solution: an emergency rescue variable-stroke jack, comprising a jack body and a jack core, wherein the jack body is semi-cylindrical, the jack core is located in the center of the jack body, two docking pin holes are opened on the rectangular side surface of the jack body, docking pins adapted to the docking pin holes are fixedly installed on the rectangular side surface of the jack body, a fixed clamping block is fixedly installed at the center of the rectangular side surface of the jack body, a clamping hoop is hingedly connected to the rectangular side surface of the jack body by a hinge, and a movable clamping block adapted to the fixed clamping block is fixedly installed on the inner side of the clamping hoop;

[0007] The two jack bodies are connected through the docking pin hole and the docking pin, and the lower top core is clamped between the upper fixed clamping block and the movable clamping block.

[0008] Furthermore, an arc-shaped groove adapted to the top core is provided on opposite sides of the fixed clamping block and the movable clamping block.

[0009] Furthermore, a locking plate is fixedly installed on one side of the clamp, and a locking screw is passed through one side of the locking plate. The locking screw passes through the locking plate and is threadedly installed on the surface of the jack body.

[0010] Furthermore, a non-slip bottom pad is fixedly installed on the bottom of the jack body, and a non-slip top pad is fixedly installed on the top of the top core.

[0011] Furthermore, a manual control block is rotatably mounted on the arc surface side of the jack body, and a through hole is provided on one side of the manual control block.

[0012] Furthermore, a control rod is passed through one side of the manual control block, and a limit block with a diameter larger than the inner diameter of the through hole is fixedly installed on one end of the control rod.

[0013] Compared with the prior art, the utility model provides an emergency rescue variable stroke jack, which has the following beneficial effects:

[0014] The variable-stroke emergency rescue jack is configured such that the jack body is semi-cylindrical, two jack bodies are connected by docking pin holes and docking pins, and the top core of a lower jack is clamped to one side of an upper jack by a fixed clamping block and a movable clamping block. A plurality of identical jacks can be combined together, and the stroke of the jacks can be increased without increasing the area occupied by the jacks. This solves the problem that during emergency rescue, the conditions on site are very complicated, with different terrains, locations, heights or widths, different rescue objects, and different object structures, and that a single jack can hardly meet the needs on site. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the utility model;

[0016] Figure 2 This is a top view of the structure of the utility model;

[0017] Figure 3 It is a three-dimensional schematic diagram of the structure of the utility model;

[0018] Figure 4 This is a schematic diagram of the structural connection of the utility model.

[0019] In the figure: 1. Jack body; 2. Jack core; 3. Docking pin hole; 4. Docking pin; 5. Fixed clamp; 51. Arc groove; 6. Clamp; 61. Locking plate; 7. Moving clamp; 8. Locking screw; 9. Anti-slip bottom pad; 10. Anti-slip top pad; 11. Manual control block; 111. Through hole; 12. Control lever; 13. Limit block. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] See also Figures 1 to 4 The emergency rescue variable stroke jack includes a jack body 1 and a top core 2. The jack body 1 is semi-cylindrical, and the top core 2 is located in the center of the jack body 1. Two docking pin holes 3 are opened on the rectangular side of the jack body 1. A docking pin 4 that is adapted to the docking pin hole 3 is fixedly installed on the rectangular side of the jack body 1. A fixed clamp 5 is fixedly installed at the center of the rectangular side of the jack body 1. The rectangular side of the jack body 1 is hinged with a clamp 6 through a hinge, and a movable clamp 7 that is adapted to the fixed clamp 5 is fixedly installed on the inner side of the clamp 6.

[0022] The two jack bodies 1 are connected through the docking pin holes 3 and docking pins 4, and the lower core 2 is clamped between the upper fixed clamp block 5 and the movable clamp block 7. The two identical jacks are connected together by the docking pin holes 3 and docking pins 4, as well as the movable clamp block 7 and the fixed clamp block 5 inside the upper jack's clamp 6, which clamp the lower jack's core 2 firmly.

[0023] At the same time, an arc-shaped groove 51 adapted to the top core 2 is formed on the opposite side of the fixed clamping block 5 and the movable clamping block 7 .

[0024] A locking plate 61 is fixedly mounted on one side of the clamp 6, and a locking screw 8 is passed through one side of the locking plate 61. The locking screw 8 passes through the locking plate 61 and is threaded onto the surface of the jack body 1. The clamp 6 is fixed to the surface of the jack body 1 by the locking screw 8, so that the jack core 2 is clamped between the movable clamp 7 and the fixed clamp 5.

[0025] At the same time, the bottom of the jack body 1 is fixedly installed with an anti-skid bottom pad 9, and the top of the top core 2 is fixedly installed with an anti-skid top pad 10. The anti-skid bottom pad 9 increases the anti-skid effect of the bottom of the jack body 1, and the anti-skid top pad 10 increases the anti-skid effect of the bottom end of the top core 2, thereby increasing the friction between the jack and the contact surface.

[0026] A manual control block 11 is rotatably mounted on the arc surface side of the jack body 1, and a through hole 111 is provided on one side of the manual control block 11. The manual control block 11 rotates to control the top core 2 to extend out of the jack body 1.

[0027] Secondly, a control rod 12 is provided on one side of the manual control block 11. A stopper 13 having a diameter larger than the inner diameter of the through hole 111 is fixedly mounted on one end of the control rod 12. During use, the control rod 12 is inserted into the through hole 111 of the manual control block 11, and the control rod 12 drives the manual control block 11 to rotate. When multiple jacks need to be assembled, the control rod 12 is pulled out for easier assembly. Multiple jacks can be controlled by a single control rod 12, reducing the weight and volume of the jacks and making them easier to carry.

[0028] When this embodiment is in use, if the stroke of a single jack is not enough, two or more jacks can be assembled through the docking pin hole 3 and the docking pin 4 as well as the movable clamp 7 and the fixed clamp 5, thereby increasing the stroke of the jack to cope with different rescue environments. During rescue, only a single model of jack only needs to be used, and there is no need to prepare multiple jacks with different strokes, thereby reducing the rescue cost.

[0029] The electrical components mentioned in this article are all electrically connected to the main controller and the power supply. The main controller can be a conventional known device that controls a computer, etc., and the existing public power connection technology is not described in detail in this article.

[0030] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0031] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An emergency rescue variable stroke jack, comprising a jack body (1) and a jack core (2), characterized in that: The jack body (1) is semi-cylindrical, the top core (2) is located at the center of the jack body (1), two docking pin holes (3) are opened on the rectangular side of the jack body (1), a docking pin (4) adapted to the docking pin hole (3) is fixedly installed on the rectangular side of the jack body (1), a fixed clamping block (5) is fixedly installed at the center of the rectangular side of the jack body (1), a clamping hoop (6) is hinged to the rectangular side of the jack body (1), and a movable clamping block (7) adapted to the fixed clamping block (5) is fixedly installed on the inner side of the clamping hoop (6); The two jack bodies (1) are connected through a docking pin hole (3) and a docking pin (4), and the lower top core (2) is clamped between the upper fixed clamping block (5) and the movable clamping block (7).

2. The variable stroke emergency rescue jack according to claim 1, characterized in that: An arc-shaped groove (51) adapted to the top core (2) is provided on the opposite side of the fixed clamping block (5) and the movable clamping block (7).

3. The variable stroke emergency rescue jack according to claim 1, characterized in that: A locking plate (61) is fixedly mounted on one side of the clamp (6), a locking screw (8) is passed through one side of the locking plate (61), and the locking screw (8) is threadedly mounted on the surface of the jack body (1) after passing through the locking plate (61).

4. The variable stroke emergency rescue jack according to claim 1, characterized in that: The bottom of the jack body (1) is fixedly mounted with an anti-skid bottom pad (9), and the top of the top core (2) is fixedly mounted with an anti-skid top pad (10).

5. The variable stroke emergency rescue jack according to claim 1, characterized in that: A manual control block (11) is rotatably mounted on the arc surface side of the jack body (1), and a through hole (111) is provided on one side of the manual control block (11).

6. The variable stroke emergency rescue jack according to claim 5, characterized in that: A control rod (12) is provided on one side of the manual control block (11), and a limit block (13) having a diameter larger than the inner diameter of the through hole (111) is fixedly mounted on one end of the control rod (12).

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