Combination of jack bracket and hydraulic jack

Abstract

The utility model relates to a jack support and hydraulic jack combination which comprises a support body and a jack body, and the support body comprises a base, a first extension supporting column, a first locking component, a second extension supporting column, a second locking component, a plate component and an outward extending component. The base comprises a bottom end, a platform and a containing cavity. The top of the jack body piston is connected with the overhanging component. The two-section type lifting supporting pillar is adopted, each section is provided with an independent ratchet wheel locking structure, the first extension supporting pillar is connected with the containing cavity through the first locking component by means of the ratchet structure, and the second extension supporting pillar is connected with the first extension supporting pillar through the second locking component by means of the ratchet structure. The two supporting columns can be fixed at multiple different positions and are locked through the ratchet structures, the ratchet locking structure of the second extension supporting column has a quick release function, and when the second extension supporting column moves to the release position, the second extension supporting column is quickly released when a piston of the jack body retracts and falls.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting devices, in particular to a combination of a jack support and a hydraulic jack. Background Art

[0002] Hydraulic jacks are used to lift many types of loads such as automobiles off the ground. If the jack is left in place after lifting the load, over time the jack will gradually lower the load due to leakage of hydraulic fluid. Best practice is to place the jack stands under the load to maintain the height of the load. However, problems arise in motor vehicles that lift the entire frame, as the frame often bends when the jack is improperly positioned under the vehicle. In addition, even if the jack is in the proper position under the frame structure so that it does not bend the frame, the jack stands are often placed in an improper position under the frame, causing the frame to bend under the weight of the vehicle when the jack is lowered. Placing the jack stands close to the raised jack does not ensure proper positioning to avoid frame bending when the jack is lowered.

[0003] Based on this, the patent with the publication (announcement) number CN201056472Y discloses a combination of a jack stand and a hydraulic jack. Although this technology can accurately locate the position of the jack stand relative to the vehicle frame so that the frame will not bend under the weight of the vehicle when the jack is lowered, in view of this, we propose a combination of a jack stand and a hydraulic jack. Utility Model Content

[0004] The problem to be solved by the utility model is to provide a combination of a jack support with self-locking height and a hydraulic jack.

[0005] In order to solve the above technical problems, the utility model provides a combination of a jack bracket and a hydraulic jack, comprising a bracket body and a jack body.

[0006] The support body comprises:

[0007] A base, comprising a bottom end, a platform connected adjacent to the bottom end, and a hollow cavity connected to the top of the bottom end, wherein the top of the cavity has an opening;

[0008] A first extension pillar is located in the cavity and can be longitudinally moved until a portion of it extends out of the opening of the cavity, and a ratchet group A is provided on the first extension pillar;

[0009] A first locking member connected between the housing cavity and the first extension support, and the first locking member is movably connected to the ratchet group A to form a ratchet locking structure;

[0010] A second extension support, located in the inner cavity of the first extension support and capable of longitudinally moving until a portion thereof extends outside the top opening of the first extension support, and a ratchet set B is provided on the second extension support;

[0011] A second locking member, connected between the first extension pillar and the second extension pillar, and the second locking member is movably connected to the ratchet group B to form a self-releasing locking structure;

[0012] a plate member vertically fixed to the top of the second extension support;

[0013] An outrigger member connected to an upper end of one side of the second extension support, and the other end of the outrigger member extends toward the upper side of the platform;

[0014] The jack body is arranged on the platform, wherein the piston top of the jack body is detachably connected to the outrigger member.

[0015] The utility model adopts a two-stage lifting support pillar, each section has an independent ratchet locking structure, the first extension pillar is connected to the cavity through the first locking component by relying on the ratchet structure, and the second extension pillar is connected to the first extension pillar through the second locking component by relying on the ratchet structure, so that the two pillars can be fixed in a plurality of different positions and locked by relying on the ratchet structure, and the ratchet locking structure of the second extension pillar has a quick release function, when the second extension pillar moves to the release position, it is quickly released when the piston of the jack body retracts and falls.

[0016] Preferably, a first opening groove connected to its top opening is formed at the upper end of one side wall of the cavity, a first side plate and a second side plate extending outward are respectively formed on both sides of the first opening groove, a first axial hole is formed at the upper end of the first side plate, a first arc-shaped groove with a high front end position and a low rear end position is formed at the lower end of the first side plate, a second axial hole symmetrical to the first axial hole is formed at the upper end of the second side plate, and a second arc-shaped groove symmetrical to the first arc-shaped groove is formed at the lower end of the second side plate; a second opening groove connected to its top opening is formed on the other side wall of the cavity adjacent to the first opening groove.

[0017] Preferably, the first locking member comprises a first lever, a first rotating shaft, a second rotating shaft and a first locking lever;

[0018] The first lever comprises a cross bar, a first side bar and a second side bar connected together; one end of the first side bar is fixedly connected to one end of the cross bar, a first through hole is formed at the other end of the first side bar, and the middle part of the first side bar protrudes outward to form a first convex surface, and a first connecting hole is formed on the first convex surface; one end of the second side bar is fixedly connected to the other end of the cross bar, a second through hole is formed at the other end of the second side bar, and the middle part of the second side bar protrudes outward to form a second convex surface, and a second connecting hole is formed on the second convex surface; the first lever as a whole forms a U-shaped plate structure, and the first side plate and the second side plate are sleeved in the U-shaped plate;

[0019] One end of the first rotating shaft is fixedly connected to the first shaft hole, and the other end of the first rotating shaft is rotatably connected to the first through hole;

[0020] One end of the second rotating shaft is fixedly connected to the second shaft hole, and the other end of the second rotating shaft is rotatably connected to the second through hole;

[0021] The first locking rod is arranged between the first side plate and the second side plate, and one end of the first locking rod passes through the first arc groove and is sleeved in the first connecting hole, and the other end of the first locking rod passes through the second arc groove and is sleeved in the second connecting hole.

[0022] Preferably, the first extension pillar is a rectangular tube structure with an open top and a hollow interior, a third opening slot communicating with the top opening is formed at an upper end of one side wall of the first extension pillar, a third side plate and a fourth side plate extending outward are respectively formed at two sides of the third opening slot, a first pin hole is formed at an upper end of the third side plate, a first waist-shaped straight slot with a high front end and a low rear end is formed at a lower end of the third side plate, a second pin hole symmetrical to the first pin hole is formed at an upper end of the fourth side plate, and a third side plate symmetrical to the first waist-shaped straight slot is formed at a lower end of the fourth side plate. two waist-shaped straight grooves; a fourth opening groove connected to the top opening of the first extension pillar is provided on the other side wall of the first extension pillar adjacent to the third opening groove; a row of first ratchet teeth distributed along the height direction of the first extension pillar is connected to the rear end of the bottom wall of the third side plate, and the first ratchet teeth are a helical tooth structure gradually inclined from the upper end to the lower end; a row of second ratchet teeth symmetrical to the first ratchet teeth is connected to the rear end of the bottom wall of the fourth side plate, and the first lever can rotate and cause the first locking lever to be limited to the connection between two adjacent ratchet teeth above and below or to escape from the front end of the ratchet teeth.

[0023] Preferably, a first limiting groove is formed at a connection between the first ratchet tooth located at the uppermost end and the third side plate, and a second limiting groove is formed at a connection between the second ratchet tooth located at the uppermost end and the fourth side plate.

[0024] Preferably, the second locking member comprises a second lever, a positioning pin, a second locking rod, a lever block, a limiting rod, a sliding rod and a spring;

[0025] The second lever comprises a locking portion and a connecting portion which are vertically connected to each other; wherein the front upper end of the locking portion is fixedly connected to the rear end of the connecting portion, a third waist-shaped straight groove distributed along its height direction is provided on the locking portion, a third pin hole is provided at the upper end of the locking portion and close to the connecting portion; a sliding groove is provided on one end of the connecting portion away from the locking portion, two third connecting holes are symmetrically provided on both side walls of the sliding groove, and a third through hole connected to the third pin hole is provided on the rear wall of the sliding groove;

[0026] The outer wall of the positioning pin shaft is provided with a clamping groove distributed along its length direction, one end of the positioning pin shaft is sleeved on the first pin hole, and the other end is sleeved on the second pin hole, the cross section of the clamping groove is a U-shaped groove, and the line connecting the center of the bottom of the U-shaped groove and the center of the positioning pin shaft is parallel to the line connecting the two ends of the first waist-shaped straight groove;

[0027] The second locking rod is sleeved in the third waist-shaped straight groove, and one end of the second locking rod extends into and sleeved in the first waist-shaped straight groove, and the other end of the second locking rod extends into and sleeved in the second waist-shaped straight groove;

[0028] The shift block is slidably connected in the slide groove, a fourth waist-shaped straight groove is provided on the side of the shift block, the fourth waist-shaped straight groove is a through groove structure, and a fourth through hole communicating with the outside is provided on the rear groove wall of the fourth waist-shaped straight groove;

[0029] The limiting rod is sleeved on the fourth waist-shaped straight groove, and the two ends of the limiting rod pass through the sliding groove respectively and are fixedly connected to the two third connecting holes;

[0030] The sliding rod is sleeved in the third through hole, one end of the sliding rod extends into the sliding groove, the other end extends into the third pin hole and contacts the outer wall of the positioning pin shaft, and the end of the other end of the sliding rod contacts the outer wall of the positioning pin shaft and can be transitionally matched with the clamping groove;

[0031] The spring is arranged in the fourth waist-shaped straight groove, and one end of the spring is fixedly connected to the middle part of the limiting rod, and the other end of the spring is fixedly connected to one end of the sliding rod.

[0032] Preferably, the second extension pillar is a rectangular tube structure with a hollow interior, and a sliding hole communicating with the cavity inside the second extension pillar is opened at the bottom of the second extension pillar; a first connecting plate and a second connecting plate are symmetrically fixed to the upper end of one side wall of the second extension pillar, a row of third ratchet teeth distributed along the height direction of the second extension pillar is connected to the bottom of the first connecting plate, and the third ratchet teeth are an oblique tooth structure gradually inclined from the upper end to the lower end, a row of fourth ratchet teeth symmetrical to the third ratchet teeth are connected to the bottom of the second connecting plate, and the second lever can rotate and cause the second locking rod to be limited at the connection between two adjacent ratchet teeth above and below or to escape from the front end of the ratchet teeth.

[0033] Preferably, a third limiting groove is formed at the connection between the third ratchet tooth located at the uppermost end and the first connecting plate, and a fourth limiting groove is formed at the connection between the fourth ratchet tooth located at the uppermost end and the second connecting plate; a first stop block and a second stop block are symmetrically fixed at the lower end of one side wall of the second extended pillar, the first stop block is located directly below the third ratchet tooth, the second locking rod is located directly below the fourth ratchet tooth, and there is a gap between the two stops and the three ratchet teeth located at the lowermost end to accommodate the second locking rod.

[0034] Preferably, it also includes a limiting shaft, which is a structure composed of a rod and a nut, and the diameter of the rod of the limiting shaft is smaller than the aperture of the sliding hole, and the diameter of the nut is larger than the aperture, and the nut end of the limiting shaft is located in the inner cavity of the second extension pillar, the upper end of the rod of the limiting shaft is fixedly connected with its nut, the lower end of the rod of the limiting shaft passes through the sliding hole and is fixedly connected with the bottom wall of the inner cavity of the first extension pillar, and the length of the rod of the limiting shaft is smaller than the height of the inner cavity of the first extension pillar. Due to the limiting effect of the nut of the limiting shaft, the second extension pillar will not be separated from the first extension pillar even if it rises to the maximum height, so that not only the rising height of the second extension pillar is limited, but also the rising height of the first extension pillar is limited.

[0035] Compared with the prior art, the beneficial effects of the utility model are:

[0036] The utility model adopts a two-stage lifting support pillar, each section has an independent ratchet locking structure, the first extension pillar is connected to the cavity through the first locking component by relying on the ratchet structure, and the second extension pillar is connected to the first extension pillar through the second locking component by relying on the ratchet structure, so that the two pillars can be fixed in a plurality of different positions and locked by relying on the ratchet structure, and the ratchet locking structure of the second extension pillar has a quick release function, when the second extension pillar moves to the release position, it is quickly released when the piston of the jack body retracts and falls.

[0037] Due to the limiting effect of the nut of the limiting shaft, the second extension pillar will not be separated from the first extension pillar even if it rises to the maximum height. This not only limits the rising height of the second extension pillar, but also limits the rising height of the first extension pillar. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a structural schematic diagram of a combined embodiment of a jack support and a hydraulic jack of the utility model;

[0039] Figure 2 This is a schematic diagram of the structure of the bracket body and the jack body in the use state of the embodiment of the utility model

[0040] Figure 3 This is a schematic diagram of the structure of the bracket body and the jack body of the embodiment of the utility model in a disassembled state;

[0041] Figure 4 This is a schematic diagram of the structure of the base and the first extension support in a separated state according to an embodiment of the utility model;

[0042] Figure 5 It is a structural schematic diagram of a base according to an embodiment of the utility model;

[0043] Figure 6 This is a schematic diagram of the exploded structure of the first locking member of an embodiment of the utility model;

[0044] Figure 7 This is a schematic structural diagram of a first extension support column according to an embodiment of the utility model;

[0045] Figure 8 This is a schematic diagram of the connection structure of the first extension support and the second extension support in an embodiment of the utility model;

[0046] Fig. 9 This is a schematic structural diagram of the first extension pillar, the second extension pillar and the second locking member in a disassembled state according to an embodiment of the utility model;

[0047] Fig.10 This is a schematic diagram of the exploded structure of the second locking member of an embodiment of the utility model;

[0048] Fig.11 This is a schematic diagram of a partially disassembled structure of a second locking member according to an embodiment of the utility model;

[0049] Fig.12 It is a side structural schematic diagram of the second lever of the embodiment of the utility model;

[0050] Fig.13 It is a side structural schematic diagram of a shift block according to an embodiment of the utility model;

[0051] Fig.14 It is a bottom view structural schematic diagram of the first extension support, the second extension support and the limiting shaft of an embodiment of the utility model;

[0052] Fig.15 It is a schematic diagram of the connection structure between the second locking member and the member and the protruding member in an embodiment of the utility model.

[0053] Description of the numbers in the figure:

[0054] 100, bracket body; 1, base; 11, bottom end; 12, platform; 121, mounting plate; 13, cavity; 131, first opening slot; 132, first side plate; 1321, first axial hole; 1322, first arc-shaped slot; 133, second side plate; 1331, second axial hole; 1332, second arc-shaped slot; 134, second opening slot; 2, first locking member; 21, first lever; 211, cross bar; 212, first side bar; 2121 , first through hole; 2122, first convex surface; 2123, first connecting hole; 213, second side rod; 2131, second through hole; 2132, second convex surface; 2133, second connecting hole; 22, first rotating shaft; 23, second rotating shaft; 24, first locking rod; 3, first extension support; 31, third opening groove; 32, third side plate; 321, first pin hole; 322, first waist straight groove; 33, fourth side plate; 331, second pin hole; 332 , second waist-shaped straight groove; 34, fourth opening groove; 35, first ratchet; 36, second ratchet; 37, first limiting groove; 38, second limiting groove; 4, second locking member; 41, second lever; 411, locking portion; 4111, third waist-shaped straight groove; 4112, third pin hole; 412, connecting portion; 4121, sliding groove; 4122, third connecting hole; 4123, third through hole; 42, positioning pin shaft; 421, card slot; 43, second locking lever ; 44. shift block; 441. fourth waist-shaped straight groove; 442. fourth through hole; 45. limit rod; 46. sliding rod; 47. spring; 5. second extension support; 51. sliding hole; 52. first connecting plate; 53. second connecting plate; 54. third ratchet; 55. fourth ratchet; 56. third limit groove; 57. fourth limit groove; 58. first stopper; 59. second stopper; 6. plate member; 7. overhanging member; 8. limit shaft; 200. jack body. DETAILED DESCRIPTION

[0055] In order to facilitate those skilled in the art to understand the technical solution of the utility model, the technical solution of the utility model is further explained in conjunction with the drawings in the specification.

[0056] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0057] The limitations of directional terms such as "above", "below", "top" and "bottom" in this application are all based on the directional limitations when the product is placed upright in normal use.

[0058] Unless otherwise defined, all terms used herein, including technical terms and scientific terms, have the same meanings as those generally understood by ordinary technicians in the field to which the present invention belongs after understanding the present invention. Unless explicitly defined as such herein, terms such as those defined in general dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant field and the present invention, and should not be interpreted in an idealized or overly formal way.

[0059] The following will be combined Figure 1-Figure 15 A combination of a jack stand and a hydraulic jack is introduced in an embodiment of the utility model. The combination device is particularly suitable for specific uses such as supporting, lifting or manipulating the ground-engaging vehicle accessories of the vehicle, but is not limited to the specific use of supporting, lifting or manipulating the ground-engaging vehicle accessories of the vehicle.

[0060] like Figure 1-Figure 5 As shown, Figure 1 This is a structural schematic diagram of a combined embodiment of a jack bracket and a hydraulic jack of the utility model. In this embodiment, the bracket 100 includes a base 1, a first locking member 2, a first extension support 3, a second locking member 4, a second extension support 5, a plate member 6, an extension member 7 and a limit shaft 8.

[0061] like Figure 1-Figure 5 As shown, the base 1 of this embodiment is a tower-shaped structure as a whole, which includes a bottom 11, a platform 12 adjacent to and integrally connected to the bottom 11, and a hollow cavity 13 integrally connected to the top of the bottom 11;

[0062] A mounting plate 121 is welded or integrally connected on the platform 12 and close to the bottom end 11 , and bolt holes are preset on the mounting plate 121 .

[0063] The top of the cavity 13 has an opening, and a first opening groove 131 communicating with the top opening is provided at the upper end of one side wall of the cavity 13, and a first side plate 132 and a second side plate 133 extending outward are provided on both sides of the first opening groove 131, a first axial hole 1321 is provided at the upper end of the first side plate 132, and a first arc-shaped groove 1322 with a high front end and a low rear end is provided at the lower end of the first side plate 132, a second axial hole 1331 symmetrical to the first axial hole 1321 is provided at the upper end of the second side plate 133, and a second arc-shaped groove 1332 symmetrical to the first arc-shaped groove 1322 is provided at the lower end of the second side plate 133; a second opening groove 134 communicating with the top opening is provided on the other side wall of the cavity 13 adjacent to the first opening groove 131.

[0064] like Figure 1-Figure 6 As shown, the first locking member 2 of this embodiment includes a first lever 21, a first rotating shaft 22, a second rotating shaft 23 and a first locking lever 24;

[0065] The first lever 21 includes a cross bar 211, a first side bar 212 and a second side bar 213 connected together; one end of the first side bar 212 is welded and fixed to one end of the cross bar 211 or connected as a whole, the other end of the first side bar 212 is provided with a first through hole 2121, and the middle of the first side bar 212 protrudes outward to form a first convex surface 2122, and the first convex surface 2122 is provided with a first connecting hole 2123; one end of the second side bar 213 is welded and fixed to the other end of the cross bar 211 or connected as a whole, the other end of the second side bar 213 is provided with a second through hole 2131, and the middle of the second side bar 213 protrudes outward to form a first convex surface 2122, and the first convex surface 2122 is provided with a first connecting hole 2123. The first lever 21 is formed with a second convex surface 2132 protruding outward, and a second connecting hole 2133 is formed on the second convex surface 2132; the first lever 21 forms a U-shaped cavity with one end open, and the first side plate 132 and the second side plate 133 are sleeved in the U-shaped cavity so that the first shaft hole 1321 is connected with the first through hole 2121, the second shaft hole 1331 is connected with the second through hole 2131, the first arc groove 1322 is connected with the first connecting hole 2123, and the second arc groove 1332 is connected with the second connecting hole 2133, and there is a gap between the ends of the first side plate 132 and the second side plate 133 and the cross bar 211;

[0066] One end of the first rotating shaft 22 is fixedly connected to the first shaft hole 1321, and the other end of the first rotating shaft 22 is rotatably connected to the first through hole 2121;

[0067] One end of the second rotating shaft 23 is fixedly connected to the second shaft hole 1331, and the other end of the second rotating shaft 23 is rotatably connected to the second through hole 2131;

[0068] The first locking rod 24 is disposed between the first side plate 132 and the second side plate 133, and one end of the first locking rod 24 passes through the first arc-shaped groove 1322 and is sleeved in the first connecting hole 2123, and the other end of the first locking rod 24 passes through the second arc-shaped groove 1332 and is sleeved in the second connecting hole 2133;

[0069] like Figure 1-Figure 8 As shown, the first extension support 3 of this embodiment is located in the cavity 13 and can be moved longitudinally until a portion of it extends outside the opening of the cavity 13;

[0070] The first extension support 3 is a rectangular tube structure with an open top and a hollow interior, and a third opening slot 31 communicating with the top opening is provided at the upper end of one side wall of the first extension support 3, and a third side plate 32 and a fourth side plate 33 extending outward are provided on both sides of the third opening slot 31, a first pin hole 321 is provided at the upper end of the third side plate 32, a first waist-shaped straight slot 322 with a high front end and a low rear end is provided at the lower end of the third side plate 32, a second pin hole 331 symmetrical to the first pin hole 321 is provided at the upper end of the fourth side plate 33, and a second waist-shaped straight slot 332 symmetrical to the first waist-shaped straight slot 322 is provided at the lower end of the fourth side plate 33; A fourth opening groove 34 connected to the top opening of the first extended pillar 3 adjacent to the third opening groove 31 is provided on the other side wall of the first extended pillar 3; a row of first ratchet teeth 35 distributed along the height direction of the first extended pillar 3 is welded or integrally connected to the rear end of the bottom wall of the third side plate 32, and the first ratchet teeth 35 are a helical tooth structure gradually inclined from the upper end to the lower end, and a row of second ratchet teeth 36 symmetrical to the first ratchet teeth 35 is welded or integrally connected to the rear end of the bottom wall of the fourth side plate 33; a first limiting groove 37 is formed at the connection between the first ratchet teeth 35 at the uppermost end and the third side plate 32, and a second limiting groove 38 is formed at the connection between the second ratchet teeth 36 at the uppermost end and the fourth side plate 33.

[0071] In the initial state, the first extension pillar 3 is completely located in the cavity 13, the third side plate 32 and the fourth side plate 33 can be inserted between the first side plate 132 and the second side plate 133, the fourth opening groove 34 is connected to the second opening groove 134, and the first locking rod 24 is close to the middle part thereof and abuts against the first limiting groove 37 and the second limiting groove 38, and the first locking rod 24 is close to the two ends thereof and is respectively located at the lowest point on the rear side of the first arc groove 1322 and the second arc groove 1332, at which time the first locking rod 24 is closest to the first opening groove 131, and when the first extension pillar 3 is pulled upward, the inclined surface structure of the ratchet will automatically lift up the first locking rod 24 and make the first locking rod 24 move along the first arc groove 1 322 and the length direction of the second arc groove 1332. During this process, the first locking rod 24 will drive the first lever 21 to rotate upward with the first rotating shaft 22 and the second rotating shaft 23 as the axis until the first locking rod 24 disengages from the front end of the ratchet. Due to the gravity of the first lever 21 itself, when the first locking rod 24 is no longer restricted, the first lever 21 will automatically rotate downward and drive the first locking rod 24 to slide back to its original position. In this way, the first locking rod 24 can be limited at the connection between the first ratchet and the second ratchet, thereby realizing the self-locking function. Whenever the first extension pillar 3 rises to a certain preset height, the first locking rod 24 will naturally fall down and engage with the ratchet to achieve the function of safety locking.

[0072] like Figure 1-Figure 13 As shown, the second locking member 4 of this embodiment includes a second lever 41, a positioning pin 42, a second locking rod 43, a lever block 44, a limiting rod 45, a sliding rod 46 and a spring 47;

[0073] The second lever 41 includes a locking portion 411 and a connecting portion 412 which are vertically connected to each other; wherein the upper end of the front side of the locking portion 411 is fixedly connected to the rear end of the connecting portion 412, a third waist-shaped straight groove 4111 distributed along the height direction of the locking portion 411 is provided on the locking portion 411, and a third pin hole 4112 is provided at the upper end of the locking portion 411 and close to the connecting portion 412; a sliding groove 4121 with a top surface and a front end opening is provided on the connecting portion 412 and at one end away from the locking portion 411, two third connecting holes 4122 are symmetrically provided on the two side walls of the sliding groove 4121, and a third through hole 4123 communicating with the third pin hole 4112 is provided on the rear wall of the sliding groove 4121;

[0074] The outer wall of the positioning pin shaft 42 is provided with a clamping groove 421 distributed along its length direction. One end of the positioning pin shaft 42 is sleeved on the first pin hole 321, and the other end is sleeved on the second pin hole 331. The cross section of the clamping groove 421 is a U-shaped groove, and the line connecting the center of the bottom of the U-shaped groove and the center of the positioning pin shaft 42 is parallel to the line connecting the two ends of the first waist-shaped straight groove 322.

[0075] The second locking rod 43 is sleeved in the third waist-shaped straight groove 4111, and one end of the second locking rod 43 extends into and sleeves in the first waist-shaped straight groove 322, and the other end of the second locking rod 43 extends into and sleeves in the second waist-shaped straight groove 332;

[0076] The shift block 44 is slidably connected in the slide groove 4121, and a fourth waist-shaped straight groove 441 is provided on the side of the shift block 44. The fourth waist-shaped straight groove 441 is a through groove structure, and a fourth through hole 442 communicating with the outside is provided on the rear groove wall of the fourth waist-shaped straight groove 441; the surface of the shift block 44 is also provided with anti-slip grooves, which has the effect of increasing friction and is convenient for moving the shift block 44 outward;

[0077] The limiting rod 45 is sleeved on the fourth waist-shaped straight groove 441, and both ends of the limiting rod 45 pass through the sliding groove 4121 and are fixedly connected to the two third connecting holes 4122;

[0078] The sliding rod 46 is sleeved in the third through hole 4123, one end of the sliding rod 46 extends into the sliding groove 4121, and the other end extends into the third pin hole 4112 and contacts the outer wall of the positioning pin shaft 42, and the end of the other end of the sliding rod 46 contacts the outer wall of the positioning pin shaft 42 and can transitionally fit with the card slot 421;

[0079] The spring 47 is disposed in the fourth waist-shaped straight groove 441 , and one end of the spring 47 is fixedly connected to the middle of the limiting rod 45 , and the other end of the spring 47 is fixedly connected to one end of the sliding rod 46 .

[0080] like Figure 1-Figure 15 As shown, the second extension support 5 of this embodiment is located in the inner cavity of the first extension support 3 and can move longitudinally until its part extends to the outside of the top opening of the first extension support 3;

[0081] The second extension support 5 is a rectangular tube structure with a hollow interior, and a sliding hole 51 communicating with the cavity inside the second extension support 5 is provided at the bottom of the second extension support 5; a first connecting plate 52 and a second connecting plate 53 are symmetrically fixed to the upper end of one side wall of the second extension support 5, and a row of third ratchet teeth 54 distributed along the height direction of the second extension support 5 is welded or integrally connected at the bottom of the first connecting plate 52, and the third ratchet teeth 54 are a helical tooth structure gradually inclined from the upper end to the lower end, and a row of third ratchet teeth 54 symmetrically distributed along the height direction of the second extension support 5 is welded or integrally connected at the bottom of the second connecting plate 53. a fourth ratchet tooth 55; a third limiting groove 56 is formed at the connection between the third ratchet tooth 54 located at the uppermost end and the first connecting plate 52, and a fourth limiting groove 57 is formed at the connection between the fourth ratchet tooth 55 located at the uppermost end and the second connecting plate 53; a first stopper 58 and a second stopper 59 are symmetrically fixed at the lower end of one side wall of the second extended pillar 5, the first stopper 58 is located directly below the third ratchet tooth 54, the second locking rod 43 is located directly below the fourth ratchet tooth 55, and there is a gap between the two stops and the three ratchet teeth located at the lowermost end for accommodating the second locking rod 43.

[0082] In the initial state, the second extension pillar 5 is completely located in the inner cavity of the first extension pillar 3. At this time, the middle part of the second locking rod 43 is located at the lowest end of the third waist-shaped straight groove 4111, the position close to the middle is against the third limiting groove 56 and the fourth limiting groove 57, and the positions close to its two ends are respectively located at the lower end of the first waist-shaped straight groove 322 and the lower end of the second waist-shaped straight groove 332. When the second extension pillar 5 is pulled upward, the inclined surface structure of the ratchet will automatically lift up the second locking rod 43. Due to the limiting effect of the positioning pin shaft 42, the second lever 41 will rotate as a whole with the positioning pin shaft 42 as the axis, thereby driving the second locking rod 43 in the third waist-shaped straight groove. When the second locking rod 43 is released from the front end of the ratchet, the second lever 41 will automatically rotate downward and drive the second locking rod 43 to slide back to its original position due to the gravity of the second lever 41. In this way, the second locking rod 43 can be limited at the connection between the first ratchet and the second ratchet. Whenever the second extension support 5 rises to a certain preset height, the second locking rod 43 will naturally fall and engage with the ratchet to achieve the function of safety locking. When the second extension support 5 rises to the maximum height, the middle part of the second locking rod 43 is sleeved on the upper end of the third waist-shaped straight groove 4111, and its two ends are respectively sleeved on the high end of the first waist-shaped straight groove 322 and the high end of the second waist-shaped straight groove 332, and the sliding rod 46 will rotate until the end of the other end is aligned with the card slot 421, and the second locking rod 43 is in a state of disengagement from the ratchet, so that the releasable position can be reached. When the shift block 44 is pushed outward, the shift block 44 slides outward on the slide slot 4121 and drives the sliding rod 46 to slide in the third through hole 4123. Since the limiting rod 45 is fixed, the sliding rod 46 slides inward while compressing the spring 47, and then When the user lets go of the spring 47, the compressed spring 47 will automatically rebound and reset, and under the action of the elastic force, the sliding rod 46 will slide in the third through hole 4123, so that the other end of the sliding rod 46 is inserted into the slot 421. Moreover, since the other end of the sliding rod 46 and the slot 421 are in transitional fit, even if the spring 47 bounces repeatedly, the bouncing force will not easily drive the sliding rod 46 to be pulled out of the slot 421, unless the second lever 41 is manually pushed outward again under the action of external force to pull the sliding rod 46 out of the slot 421. In this way, the second locking rod 43 can be always fixed in the release position, and the second extension support 5 can be quickly released.

[0083] like Figure 1-Figure 3 , Figure 8 , Fig. 9 , Fig.11 , Fig.15As shown, the plate member 6 of this embodiment is vertically fixed on the top of the second extension support 5, and the surface of the plate member 6 of the utility model is provided with anti-slip grooves.

[0084] like Figure 1-Figure 3 , Figure 8 , Fig. 9 , Fig.11 , Fig.15 As shown, one end of the outrigger member 7 of this embodiment is welded or integrally fixed to the upper end of one side of the second extension support 5, and the other end of the outrigger member 7 extends toward the upper side of the platform 12, and a mounting hole is provided at the other end of the outrigger member 7 that passes through from top to bottom;

[0085] like Fig. 9 , Fig.14 As shown, the limit shaft 8 of this embodiment is a structure composed of a rod and a nut, and the diameter of the rod of the limit shaft 8 is smaller than the aperture of the sliding hole 51, and the diameter of the nut is larger than the aperture, and the nut end of the limit shaft 8 is located in the inner cavity of the second extension pillar 5, and the upper end of the rod of the limit shaft 8 is fixedly connected with its nut, and the lower end of the rod of the limit shaft 8 passes through the sliding hole 51 and is fixedly connected to the bottom wall of the inner cavity of the first extension pillar 3, and the length of the rod of the limit shaft 8 is smaller than the height of the inner cavity of the first extension pillar 3. Therefore, due to the limiting effect of the nut of the limit shaft 8, the second extension pillar 5 will not be separated from the first extension pillar 3 even if it rises to the maximum height, which not only limits the rising height of the second extension pillar 5, but also limits the rising height of the first extension pillar 3.

[0086] The jack body 200 is disposed on the platform 12 , wherein the piston top of the jack body 200 is detachably connected to the mounting hole on the extension member 7 via bolts and nuts.

[0087] Working principle: This embodiment provides a combination of a jack support and a hydraulic jack. When in use, the piston of the jack body 200 extends upward and drives the outward extension member 7 to move upward, thereby driving the second extension support 5 to move longitudinally until part of it extends to the outside of the top opening of the first extension support 3. Due to the inclined surface structure of the ratchet, the second locking rod 43 is automatically lifted up. Due to the limiting effect of the positioning pin shaft 42, the second lever 41 as a whole rotates around the positioning pin shaft 42 as the axis, thereby driving the second locking rod 43 to slide upward in the third waist-shaped straight groove 4111, and at the same time, the two ends of the second locking rod 43 slide respectively. When the second locking rod 43 is released from the front end of the ratchet, the second lever 41 will automatically rotate downward and drive the second locking rod 43 to slide back to its original position due to the gravity of the second lever 41. In this way, the second locking rod 43 can be limited at the connection between the first ratchet and the second ratchet. Whenever the second extension support 5 rises to a certain preset height, the second locking rod 43 will naturally fall and engage with the ratchet to achieve the function of safety locking. Furthermore, when the second extension support 5 rises to the maximum When the height is maximum, the middle part of the second locking rod 43 is sleeved on the upper end of the third waist-shaped straight groove 4111, and its two ends are respectively sleeved on the high end of the first waist-shaped straight groove 322 and the high end of the second waist-shaped straight groove 332, and the sliding rod 46 will rotate until the end of the other end is aligned with the card slot 421, and the second locking rod 43 is in a state of disengagement from the ratchet, so that the releasable position can be reached. When the shift block 44 is pushed outward, the shift block 44 slides outward on the slide groove 4121 and drives the sliding rod 46 to slide in the third through hole 4123. Since the limiting rod 45 is fixed, the sliding rod 46 slides inward while compressing the spring 47, and then When the user lets go of the grip, the compressed spring 47 will automatically rebound and reset, and under the action of the elastic force, the sliding rod 46 will slide in the third through hole 4123, so that the other end of the sliding rod 46 is inserted into the slot 421. Since the other end of the sliding rod 46 and the slot 421 are in transitional fit, even if the spring 47 bounces repeatedly, the bouncing force will not easily pull the sliding rod 46 out of the slot 421, unless the second lever 41 is manually pushed outward again under the action of external force to pull the sliding rod 46 out of the slot 421, so that the second locking rod 43 can be always fixed in the released position.The piston of the jack body 200 continues to extend upward. Due to the connection effect of the limit shaft 8, the limit shaft 8 will pull the first extension pillar 3 to move longitudinally until its part extends out of the opening of the cavity 13. Similarly, due to the inclined surface structure of the ratchet, the first locking rod 24 will be automatically lifted and the first locking rod 24 will slide along the length direction of the first arc groove 1322 and the second arc groove 1332. During this process, the first locking rod 24 will drive the first lever 21 to rotate upward with the first rotating shaft 22 and the second rotating shaft 23 as the axis until the first locking rod 24 is disengaged from the front end of the ratchet. Due to the gravity of the lever 21, when the first locking rod 24 is no longer restricted, the first lever 21 will automatically rotate downward and drive the first locking rod 24 to slide back to the original position, so that the first locking rod 24 can be limited at the connection between the first ratchet and the second ratchet, thereby realizing the self-locking function. Whenever the first extension support 3 rises to a certain preset height, the first locking rod 24 will naturally fall down and engage with the ratchet to achieve the function of safety locking, thereby making the plate member 6 reach a predetermined height according to the needs, and then used to support, lift or manipulate the vehicle's ground-engaging vehicle accessories;

[0088] When the jack stand needs to be released, the jack body 200 only needs to be started again to cause its piston to retract in the opposite direction. At this time, since the second extension support 5 is in a state where it can be quickly released, the second extension support 5 can move downward with the piston of the jack body 200. The first lever 21 is manually pushed upward until it rotates to the highest end, and the first locking rod 24 is kept in a state of disengaging from the ratchet. In this way, the first extension support 3 can be quickly released.

[0089] The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. A person skilled in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present invention, they are all within the protection scope of the present invention.

Claims

1. A combination of a jack support and a hydraulic jack, comprising a support body (100) and a jack body (200), characterized in that: The support body (100) comprises: A base (1) comprising a bottom end (11), a platform (12) adjacent to and connected to the bottom end (11), and a hollow cavity (13) connected to the top of the bottom end (11), wherein the top of the cavity (13) has an opening; A first extension pillar (3) is located in the cavity (13) and can be moved longitudinally until a portion of it extends outside the opening of the cavity (13), and a ratchet group A is provided on the first extension pillar (3); A first locking member (2) connected between the housing cavity (13) and the first extension pillar (3), and the first locking member (2) is movably connected to the ratchet group A to form a ratchet locking structure; a second extension support (5), located in the inner cavity of the first extension support (3) and capable of longitudinally moving until a portion of the second extension support extends outside the top opening of the first extension support (3), and a ratchet group B is provided on the second extension support (5); A second locking member (4) is connected between the first extension support (3) and the second extension support (5), and the second locking member (4) is movably connected to the ratchet group B to form a self-releasing locking structure; A plate member (6) vertically fixed to the top of the second extension support (5); An outrigger member (7) connected to an upper end of one side of the second extension support (5), and the other end of the outrigger member (7) extends in a direction above the platform (12); The jack body (200) is arranged on the platform (12), wherein the piston top of the jack body (200) is detachably connected to the extension member (7).

2. The combination of a jack stand and a hydraulic jack according to claim 1, characterized in that: A first opening groove (131) communicating with a top opening is formed at an upper end of a side wall of the cavity (13); a first side plate (132) and a second side plate (133) extending outward are respectively formed on both sides of the first opening groove (131); a first shaft hole (1321) is formed at an upper end of the first side plate (132); a first arc-shaped groove (1322) with a high front end and a low rear end is formed at a lower end of the first side plate (132); a second shaft hole (1331) symmetrical to the first shaft hole (1321) is formed at an upper end of the second side plate (133); a second arc-shaped groove (1332) symmetrical to the first arc-shaped groove (1322) is formed at a lower end of the second side plate (133); and a second opening groove (134) communicating with a top opening is formed on another side wall of the cavity (13) adjacent to the first opening groove (131).

3. The combination of a jack stand and a hydraulic jack according to claim 2, characterized in that: The first locking component (2) comprises a first shifting rod (21), a first rotating shaft (22), a second rotating shaft (23) and a first locking rod (24); The first lever (21) comprises a cross bar (211), a first side bar (212) and a second side bar (213) connected together; one end of the first side bar (212) is fixedly connected to one end of the cross bar (211); the other end of the first side bar (212) is provided with a first through hole (2121); the middle portion of the first side bar (212) protrudes outward to form a first convex surface (2122); the first convex surface (2122) is provided with a first connecting hole (2123); One end of the second side rod (213) is fixedly connected to the other end of the cross rod (211); a second through hole (2131) is provided at the other end of the second side rod (213); a middle portion of the second side rod (213) protrudes outward to form a second convex surface (2132); a second connecting hole (2133) is provided on the second convex surface (2132); the first shift rod (21) as a whole forms a U-shaped plate structure; the first side plate (132) and the second side plate (133) are sleeved in the U-shaped plate; One end of the first rotating shaft (22) is fixedly connected to the first shaft hole (1321), and the other end of the first rotating shaft (22) is rotatably connected to the first through hole (2121); One end of the second rotating shaft (23) is fixedly connected to the second shaft hole (1331), and the other end of the second rotating shaft (23) is rotatably connected to the second through hole (2131); The first locking rod (24) is arranged between the first side plate (132) and the second side plate (133), and one end of the first locking rod (24) passes through the first arc-shaped groove (1322) and is sleeved in the first connecting hole (2123), and the other end of the first locking rod (24) passes through the second arc-shaped groove (1332) and is sleeved in the second connecting hole (2133).

4. The combination of a jack stand and a hydraulic jack according to claim 3, characterized in that: The first extension support (3) is a rectangular tube structure with an open top and a hollow interior. A third opening slot (31) communicating with the top opening is provided at the upper end of one side wall of the first extension support (3). A third side plate (32) and a fourth side plate (33) extending outward are provided on both sides of the third opening slot (31). A first pin hole (321) is provided at the upper end of the third side plate (32). A first waist-shaped straight slot (322) with a high front end and a low rear end is provided at the lower end of the third side plate (32). A second pin hole (331) symmetrical to the first pin hole (321) is provided at the upper end of the fourth side plate (33). A second pin hole (331) symmetrical to the first pin hole (321) is provided at the lower end of the fourth side plate (33). A symmetrical second waist-shaped straight groove (332); a fourth opening groove (34) is provided on the other side wall of the first extension pillar (3) adjacent to the third opening groove (31) and connected to the top opening thereof; a row of first ratchet teeth (35) distributed along the height direction of the first extension pillar (3) is connected to the rear end of the bottom wall of the third side plate (32), and the first ratchet teeth (35) are an oblique tooth structure gradually inclined from the upper end to the lower end; a row of second ratchet teeth (36) symmetrical to the first ratchet teeth (35) is connected to the rear end of the bottom wall of the fourth side plate (33); the first shifting rod (21) can rotate and cause the first locking rod (24) to be limited to the connection between two upper and lower adjacent ratchet teeth or to be disengaged from the front end of the ratchet teeth.

5. The combination of a jack stand and a hydraulic jack according to claim 4, characterized in that: A first limiting groove (37) is formed at a connection between the first ratchet tooth (35) located at the uppermost end and the third side plate (32), and a second limiting groove (38) is formed at a connection between the second ratchet tooth (36) located at the uppermost end and the fourth side plate (33).

6. The combination of a jack stand and a hydraulic jack according to claim 5, characterized in that: The second locking component (4) comprises a second shifting rod (41), a positioning pin shaft (42), a second locking rod (43), a shifting block (44), a limiting rod (45), a sliding rod (46) and a spring (47); The second lever (41) comprises a locking portion (411) and a connecting portion (412) which are vertically connected to each other; wherein the front upper end of the locking portion (411) is fixedly connected to the rear end of the connecting portion (412); the locking portion (411) is provided with a third waist-shaped straight groove (4111) distributed along its height direction; a third pin hole (4112) is provided at the upper end of the locking portion (411) and close to the connecting portion (412); a sliding groove (4121) is provided on one end of the connecting portion (412) away from the locking portion (411); two third connecting holes (4122) are symmetrically provided on two side walls of the sliding groove (4121); and a third through hole (4123) communicating with the third pin hole (4112) is provided on the rear wall of the sliding groove (4121); The outer wall of the positioning pin shaft (42) is provided with a clamping groove (421) distributed along the length direction thereof, one end of the positioning pin shaft (42) is sleeved on the first pin hole (321), and the other end is sleeved on the second pin hole (331), the cross section of the clamping groove (421) is a U-shaped groove, and the line connecting the center of the bottom of the U-shaped groove and the center of the positioning pin shaft (42) is parallel to the line connecting the two ends of the first waist-shaped straight groove (322); The second locking rod (43) is sleeved in the third waist-shaped straight groove (4111), and one end of the second locking rod (43) extends into and is sleeved in the first waist-shaped straight groove (322), and the other end of the second locking rod (43) extends into and is sleeved in the second waist-shaped straight groove (332); The shift block (44) is slidably connected in the slide groove (4121), a fourth waist-shaped straight groove (441) is provided on the side of the shift block (44), the fourth waist-shaped straight groove (441) is a through groove structure, and a fourth through hole (442) communicating with the outside is provided on the rear groove wall of the fourth waist-shaped straight groove (441); The limiting rod (45) is sleeved on the fourth waist-shaped straight groove (441), and two ends of the limiting rod (45) respectively pass through the sliding groove (4121) and are fixedly connected to the two third connecting holes (4122); The sliding rod (46) is sleeved in the third through hole (4123), one end of the sliding rod (46) extends into the sliding groove (4121), and the other end extends into the third pin hole (4112) and contacts the outer wall of the positioning pin shaft (42), and the end of the other end of the sliding rod (46) contacts the outer wall of the positioning pin shaft (42) and can be transitionally matched with the clamping groove (421); The spring (47) is disposed in the fourth waist-shaped straight groove (441), and one end of the spring (47) is fixedly connected to the middle portion of the limiting rod (45), and the other end of the spring (47) is fixedly connected to one end of the sliding rod (46).

7. The combination of a jack stand and a hydraulic jack according to claim 6, characterized in that: The second extension pillar (5) is a rectangular tube structure with a hollow interior, and a sliding hole (51) communicating with the cavity inside the second extension pillar (5) is provided at the bottom of the second extension pillar (5); a first connecting plate (52) and a second connecting plate (53) are symmetrically fixedly provided at the upper end of a side wall of the second extension pillar (5); a row of third ratchet teeth (54) distributed along the height direction of the second extension pillar (5) is connected to the bottom of the first connecting plate (52), and the third ratchet teeth (54) are an oblique tooth structure gradually inclined from the upper end to the lower end; a row of fourth ratchet teeth (55) symmetrical to the third ratchet teeth (54) is connected to the bottom of the second connecting plate (53); the second shifting rod (41) can rotate and cause the second locking rod (43) to be limited at the connection between two upper and lower adjacent ratchet teeth or to be disengaged from the front end of the ratchet teeth.

8. The combination of a jack stand and a hydraulic jack according to claim 7, characterized in that: A third limiting groove (56) is formed at the connection between the third ratchet tooth (54) located at the uppermost end and the first connecting plate (52), and a fourth limiting groove (57) is formed at the connection between the fourth ratchet tooth (55) located at the uppermost end and the second connecting plate (53); a first stopper (58) and a second stopper (59) are symmetrically fixed at the lower end of one side wall of the second extension pillar (5), the first stopper (58) is located directly below the third ratchet tooth (54), the second locking rod (43) is located directly below the fourth ratchet tooth (55), and there is a gap between the two stops and the three ratchet teeth located at the lowermost end to accommodate the second locking rod (43).

9. The combination of a jack stand and a hydraulic jack according to claim 7, characterized in that: It also includes a limiting shaft (8), the limiting shaft (8) is a structure composed of a rod and a nut, and the diameter of the rod of the limiting shaft (8) is smaller than the hole diameter of the sliding hole (51), and the diameter of the nut is larger than the hole diameter, the nut end of the limiting shaft (8) is located in the inner cavity of the second extension pillar (5), the upper end of the rod of the limiting shaft (8) is fixedly connected to its nut, the lower end of the rod of the limiting shaft (8) passes through the sliding hole (51) and is fixedly connected to the bottom wall of the inner cavity of the first extension pillar (3), and the length of the rod of the limiting shaft (8) is smaller than the height of the inner cavity of the first extension pillar (3).

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