Quick lifting jack

Abstract

The utility model relates to the field of jacks, in particular to a quick lifting jack which comprises an inner pipe and a telescopic pipe, the telescopic pipe is coaxially connected outside the inner pipe in a sliding mode, and a plurality of inserting holes are evenly formed in the side walls of the two ends of the inner pipe in the length direction. The side walls of the two ends of the telescopic pipe are both provided with fixing holes coaxial with the inserting holes, the outer side walls of the two ends of the telescopic pipe are both provided with connecting cylinders coaxial with the fixing holes, the interiors of the connecting cylinders are coaxially and slidably connected with inserting rods, and the inserting rods sequentially penetrate through the fixing holes and the inserting holes. The end, away from the telescopic pipe, of the inserting rod is provided with a connecting rod arranged in the radial direction of the inserting rod, the end, away from the telescopic pipe, of the connecting cylinder is provided with a first clamping position and a second clamping position which are used for being clamped with the connecting rod, and the linear distance between the first clamping position and the telescopic pipe is smaller than that between the second clamping position and the telescopic pipe. The lifting device has the effect that an operator can conveniently complete quick lifting of the jack by one person.

Description

Technical Field

[0001] The present application relates to the field of jacks, and in particular to a fast lifting jack. Background Art

[0002] As a common lifting tool, jacks are widely used in automobile maintenance, construction and other fields. There are many types and structures of jacks on the market, such as screw jacks, hydraulic jacks, etc. They mostly use screw transmission or hydraulic transmission in the lifting mechanism. The screw jack is widely accepted by the market because of its low price, simple use and easy maintenance. However, the lifting height of the screw jack mainly depends on the length of the screw. If the height of the object is high, it cannot meet the lifting needs.

[0003] The utility model patent with publication number CN209507475U discloses a top rocking jack, which belongs to the field of jacks and includes a square tube assembly, a rocker assembly and a positioning rod. The square tube assembly has an internal screw, which is connected to a connecting rod through a nut, a nut pin, a thrust ball bearing, an inner hexagonal bolt, an outer hexagonal nut and a connecting rod. The connecting rod is connected to the rocker assembly through a nylon locking nut, an outer hexagonal bolt, and the bottom end of the square tube assembly is connected through a spring, a cotter pin and a positioning rod.

[0004] When the jack needs to be raised or lowered quickly, the positioning rod needs to be pulled out, and then the outer square tube and the middle square tube need to be lifted at the same time. When they reach a suitable height, the positioning rod needs to be inserted back, thereby achieving a quick lifting effect. However, this method requires manual lifting of the outer and middle square tubes with one hand and plugging and pulling out the positioning rod with the other hand, which is cumbersome and inconvenient. Utility Model Content

[0005] In order to facilitate an operator to complete the rapid lifting and lowering of a jack by a single person, the present application provides a rapid lifting jack.

[0006] The present application provides a rapid lifting jack adopting the following technical solution:

[0007] A quick lifting jack comprises an inner tube and a telescopic tube, the telescopic tube being coaxial and slidably connected to the outside of the inner tube, a plurality of plug holes being evenly arranged on the side walls at both ends of the inner tube along the length direction, fixing holes being coaxial with the plug holes being arranged on the side walls at both ends of the telescopic tube, connecting tubes being coaxial with the fixing holes being arranged on the outer side walls at both ends of the telescopic tube, an insertion rod being coaxial and slidably connected inside the connecting tube, the insertion rod passing through the fixing hole and the plug hole in sequence, a connecting rod being arranged radially along the insertion rod being arranged at one end of the insertion rod away from the telescopic tube, a first clamping position and a second clamping position for clamping with the connecting rod being arranged at one end of the connecting tube away from the telescopic tube, the straight-line distance between the first clamping position and the telescopic tube being smaller than the straight-line distance between the second clamping position and the telescopic tube.

[0008] By adopting the above technical solution, when the total length of the jack needs to be adjusted, the operator steps on the connecting rod downward with his foot, and the connecting rod moves downward from the first position to the second position. Since the straight-line distance between the first position and the telescopic tube is smaller than the straight-line distance between the second position and the telescopic tube, the connecting rod drives the insertion rod to move in a direction away from the inner tube and move out of the fixing hole and the plug-in hole. The operator then moves the telescopic tube up and down by hand and aligns the fixing hole with the plug-in hole at a suitable position, thereby realizing the rapid lifting and lowering of the jack. Compared with the traditional jack that requires two people to operate, this structure can complete the rapid lifting and lowering of the jack by one person, which is more convenient.

[0009] Optionally, the first clamping position and the second clamping position are connected via a guiding slope.

[0010] By adopting the above technical solution, the setting of the guiding inclined surface makes it more convenient for the connecting rod to move between the first locking position and the second locking position.

[0011] Optionally, the connecting rod is arranged through the insertion rod, one end of the connecting rod is provided with a pull ring hole along the radial direction of the connecting rod, one end of the connecting rod is covered with a clamping block, the clamping block is provided with a pull ring groove coaxial with the pull ring hole, a pull rod is slidably connected in the pull ring groove and the pull rod is arranged through the pull ring hole.

[0012] By adopting the above technical solution, after the pull rod is taken out from the pull ring groove, the clamping block can be separated from the connecting rod, so that the connecting rod can be removed from the insertion rod, which is convenient for the storage of parts.

[0013] Optionally, a pull ring is provided at the upper end of the pull rod, and the diameter of the pull ring is larger than the diameter of the pull ring hole.

[0014] By adopting the above technical solution, the pull ring plays a role of limiting, thereby reducing the occurrence of the pull rod sliding out of the pull ring groove.

[0015] Optionally, the two insertion rods are connected via a spring, and both ends of the spring are respectively connected to ends of the two insertion rods that are close to each other.

[0016] By adopting the above technical solution, the spring plays a role in maintaining the two insertion rods in place. When the telescopic rod moves to a suitable position, the spring drives the two pull rods to move in a direction approaching each other and pass through the fixing hole and the plug-in hole, thereby fixing the position of the telescopic rod.

[0017] Optionally, the telescopic tube includes an outer tube and a middle tube, the outer tube is coaxially and slidably connected to the outside of the middle tube, the fixing hole is opened on the side wall of the middle tube, a screw is coaxially provided in the middle tube, a transmission part for driving the screw to rotate is provided on the outer tube, a matching sleeve is provided on the screw outer sleeve, the outer wall of the matching sleeve is fixedly connected to the inner wall of the middle tube, the inner wall of the matching sleeve is matched with the screw thread, a horizontal lifting piece is provided on the side wall of the screw, the lifting piece is located above the matching sleeve, and the end of the lifting piece away from the screw is connected to the inner wall of the outer tube.

[0018] By adopting the above technical solution, the transmission part drives the screw to rotate when it rotates, and the screw is threadedly matched with the matching sleeve. Since the matching sleeve is fixed, the screw moves up and down when it rotates. When the screw moves up and down, the outer tube is driven up and down by the lifting part, thereby realizing the function of the jack.

[0019] Optionally, the transmission member includes an input shaft, a driving gear and a transmission gear, the input shaft is rotatably connected to the side wall of the outer tube, the driving gear is sleeved on the input shaft, the transmission gear is sleeved on the screw, and the driving gear and the transmission gear are meshingly arranged.

[0020] By adopting the above technical solution, the input shaft drives the vertical screw to rotate through the driving gear and the transmission gear in turn, so that the operator can drive the outer tube to move up and down on the side of the outer tube, which makes the operation more convenient.

[0021] Optionally, the matching sleeve is provided with a horizontal base, and the matching sleeve is connected to the inner wall of the middle tube through the base.

[0022] By adopting the above technical solution, the base plays a supporting role for the matching sleeve.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. When the total length of the jack needs to be adjusted, the operator steps on the connecting rod downward with his foot, and the connecting rod moves downward from the first position to the second position. Since the straight-line distance between the first position and the telescopic tube is smaller than the straight-line distance between the second position and the telescopic tube, the connecting rod drives the plug rod to move away from the inner tube and move out of the fixing hole and the plug hole. The operator then moves the telescopic tube up and down by hand and aligns the fixing hole with the plug hole at a suitable position, thereby realizing the rapid lifting and lowering of the jack. Compared with the traditional jack that requires two people to operate, this structure can complete the rapid lifting and lowering of the jack by one person, which is more convenient.

[0025] 2. The spring plays the role of maintaining the original position of the two plug rods. When the telescopic rod moves to a suitable position, the spring drives the two pull rods to move in a direction close to each other and pass through the fixing hole and the plug hole, thereby fixing the position of the telescopic rod;

[0026] 3. The input shaft drives the vertical screw to rotate through the driving gear and the transmission gear in turn, so that the operator can drive the outer tube to move up and down on the side of the outer tube, making the operation more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of a rapid lifting jack according to an embodiment of the present application.

[0028] Figure 2 It is a structural schematic diagram of a middle tube of a rapid lifting jack according to an embodiment of the present application.

[0029] Figure 3 It is a structural schematic diagram of an insertion rod, a connecting rod and a connecting tube of a quick lifting jack according to an embodiment of the present application.

[0030] Figure 4 It is a structural schematic diagram of a plug rod and a spring of a quick lifting jack according to an embodiment of the present application.

[0031] Figure 5 It is a structural schematic diagram of a transmission part, a screw rod, a lifting part and a matching sleeve of a rapid lifting jack according to an embodiment of the present application.

[0032] Explanation of the reference numerals: 1. inner tube; 11. plug-in hole; 2. telescopic tube; 21. middle tube; 211. fixing hole; 212. connecting tube; 213. first clamping position; 214. second clamping position; 215. guiding slope; 216. screw rod; 217. matching sleeve; 218. base; 219. lifting member; 22. outer tube; 3. plug-in rod; 31. spring; 4. connecting rod; 5. block; 51. pull ring groove; 52. pull rod; 53. pull ring; 6. transmission member; 61. input shaft; 62. driving gear; 63. transmission gear. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-5 This application is described in further detail.

[0034] The present application embodiment discloses a rapid lifting jack. Figure 1 A quick lifting jack includes a horizontal base, the upper end of the base is fixedly connected with a vertical inner tube 1, the inner tube 1 is covered with a coaxial telescopic tube 2, the telescopic tube 2 is slidably connected to the inner tube 1, the telescopic tube 2 includes a middle tube 21 and an outer tube 22, and the outer tube 22 is coaxial and slidably connected to the outside of the middle tube 21.

[0035] Reference Figure 1 , Figure 2 as well as Figure 3The side walls at both ends of the inner tube 1 are uniformly provided with a plurality of plug holes 11 along the length direction, the side walls at both ends of the middle tube 21 are provided with fixing holes 211 coaxial with the plug holes 11, and the outer side walls at both ends of the middle tube 21 are fixedly connected with connecting tubes 212 coaxial with the fixing holes 211, and the connecting tubes 212 are coaxially and slidably connected with plug rods 3, which penetrate the fixing holes 211 and the plug holes 11 in sequence, thereby fixing the middle tube 21 and the inner tube 1, and the end of the plug rod 3 away from the telescopic tube 2 is penetrated with a connecting rod 3 radially arranged Rod 4, both ends of the connecting rod 4 are respectively plugged with two plug rods 3, one end of the plug rod 3 is provided with a pull ring hole along the radial direction of the plug rod 3, one end of the plug rod 3 is covered with a clamping block 5, and the clamping block 5 is provided with a pull ring groove 51 coaxial with the pull ring hole, a pull rod 52 is slidably connected in the pull ring groove 51 and the pull rod 52 is arranged through the pull ring hole, the pull rod 52 plays the role of fixing the clamping block 5 and the connecting rod 4, one end of the pull rod 52 is fixedly connected with a pull ring 53, the diameter of the pull ring 53 is larger than the diameter of the pull ring hole, thereby reducing the occurrence of the pull rod 52 slipping out of the pull ring hole.

[0036] Reference Figure 1 , Figure 2 as well as Figure 3 The end of the connecting tube 212 away from the telescopic tube 2 is provided with a first clamping position 213 and a second clamping position 214 for clamping with the connecting rod 4. The straight-line distance between the first clamping position 213 and the telescopic tube 2 is smaller than the straight-line distance between the second clamping position 214 and the telescopic tube 2. The first clamping position 213 and the second clamping position 214 are connected by a guiding inclined surface 215. When the total length of the jack needs to be adjusted, the operator steps on the connecting rod 4 downward with his foot. When the connecting rod 4 moves downward, it moves from the first clamping position 213 to the second clamping position 214. The straight-line distance between the first locking position 213 and the telescopic tube 2 is smaller than the straight-line distance between the second locking position 214 and the telescopic tube 2, so that the connecting rod 4 drives the insertion rod 3 to move in a direction away from the inner tube 1 and move out of the fixing hole 211 and the plug-in hole 11. The operator then moves the telescopic tube 2 up and down by hand and aligns the fixing hole 211 with the plug-in hole 11 at a suitable position, thereby realizing the rapid lifting and lowering of the jack. Compared with the traditional jack that requires two people to operate, this structure can complete the rapid lifting and lowering of the jack by one person, which is more convenient.

[0037] Reference Figure 1 , Figure 2 as well as Figure 4 The two insertion rods 3 are connected by a spring 31, and the two ends of the spring 31 are respectively connected to the ends of the two insertion rods 3 that are close to each other. After the middle tube 21 moves to a suitable position, the spring 31 drives the two pull rods 52 to move in a direction close to each other and pass through the fixing hole 211 and the plug-in hole 11, thereby fixing the position of the middle tube 21.

[0038] Reference Figure 1 as well as Figure 5 The outer tube 22 is provided with a transmission member 6, the moving member includes an input shaft 61, a driving gear 62 and a transmission gear 63, the input shaft 61 is rotatably connected to the side wall of the outer tube 22, the driving gear 62 is sleeved on the input shaft 61, the driving gear 62 and the transmission gear 63 are meshed, the lower end of the transmission gear 63 is coaxially connected with a screw rod 216, the screw rod 216 is coaxially arranged with the middle tube 21, the screw rod 216 is sleeved with a matching sleeve 217, the inner side wall of the matching sleeve 217 is threadedly matched with the screw rod 216, the matching sleeve 217 is sleeved with a horizontal base 218, the matching sleeve 217 is connected to the inner side wall of the middle tube 21 through the base 218, and the matching sleeve 217 is connected to the inner side wall of the middle tube 21 through the base 218. The side wall connection is arranged, and a horizontal lifting piece 219 is fixedly connected to the side wall of the screw rod 216. The lifting piece 219 is located above the matching sleeve 217. The end of the lifting piece 219 away from the screw rod 216 is connected to the inner wall of the outer tube 22. The input shaft 61 drives the vertical screw rod 216 to rotate through the driving gear 62 and the transmission gear 63 in turn. The screw rod 216 is threadedly matched with the matching sleeve 217. Since the matching sleeve 217 is fixed, the screw rod 216 will move up and down when it rotates. When the screw rod 216 moves up and down, it drives the outer tube 22 to move up and down through the lifting piece 219, thereby realizing the function of the jack.

[0039] The implementation principle of a quick lifting jack in an embodiment of the present application is as follows: when it is necessary to adjust the total length of the jack, the operator steps on the connecting rod 4 downward with his foot, and the connecting rod 4 moves downward from the first clamping position 213 to the second clamping position 214. Since the straight-line distance between the first clamping position 213 and the telescopic tube 2 is smaller than the straight-line distance between the second clamping position 214 and the telescopic tube 2, the connecting rod 4 drives the insertion rod 3 to move in a direction away from the inner tube 1 and move out from the fixing hole 211 and the plug-in hole 11. The operator then moves the middle tube 21 up and down by hand and aligns the fixing hole 211 with the plug-in hole 11 at a suitable position. After the middle tube 21 moves to a suitable position, the spring 31 drives the two pull rods 52 to move in a direction approaching each other and pass through the fixing hole 211 and the plug-in hole 11, thereby fixing the position of the middle tube 21, thereby realizing the quick lifting and lowering of the jack. Compared with the traditional jack that requires two people to operate, this structure can complete the quick lifting and lowering of the jack by one person, which is more convenient.

[0040] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A rapid lifting jack, characterized in that: The telescopic tube (2) comprises an inner tube (1) and a telescopic tube (2), wherein the telescopic tube (2) is coaxially and slidably connected to the outside of the inner tube (1), a plurality of plug holes (11) are evenly provided on the side walls at both ends of the inner tube (1) along the length direction, a fixing hole (211) coaxial with the plug hole (11) is provided on the side walls at both ends of the telescopic tube (2), a connecting tube (212) coaxial with the fixing hole (211) is provided on the outer side walls at both ends of the telescopic tube (2), and an insert rod (3) is coaxially and slidably connected inside the connecting tube (212). The insertion rod (3) is sequentially passed through the fixing hole (211) and the insertion hole (11); an end of the insertion rod (3) away from the telescopic tube (2) is provided with a connecting rod (4) radially arranged along the insertion rod (3); an end of the connecting tube (212) away from the telescopic tube (2) is provided with a first locking position (213) and a second locking position (214) for locking with the connecting rod (4); the straight-line distance between the first locking position (213) and the telescopic tube (2) is smaller than the straight-line distance between the second locking position (214) and the telescopic tube (2).

2. A rapid lifting jack according to claim 1, characterized in that: The first latching position (213) and the second latching position (214) are connected via a guiding inclined surface (215).

3. A rapid lifting jack according to claim 1, characterized in that: The connecting rod (4) is arranged to pass through the insertion rod (3), one end of the connecting rod (4) is provided with a pull ring hole along the radial direction of the connecting rod (4), one end of the connecting rod (4) is covered with a clamping block (5), the clamping block (5) is provided with a pull ring groove (51) coaxial with the pull ring hole, a pull rod (52) is slidably connected in the pull ring groove (51), and the pull rod (52) is arranged to pass through the pull ring hole.

4. A rapid lifting jack according to claim 3, characterized in that: A pull ring (53) is provided at the upper end of the pull rod (52), and the diameter of the pull ring (53) is larger than the diameter of the pull ring hole.

5. A rapid lifting jack according to claim 1, characterized in that: The two insertion rods (3) are connected via a spring (31), and both ends of the spring (31) are respectively connected to ends of the two insertion rods (3) that are close to each other.

6. A rapid lifting jack according to claim 1, characterized in that: The telescopic tube (2) comprises an outer tube (22) and a middle tube (21); the outer tube (22) is coaxially and slidably connected to the outside of the middle tube (21); the fixing hole (211) is formed on the side wall of the middle tube (21); a screw rod (216) is coaxially arranged inside the middle tube (21); a transmission member (6) for driving the screw rod (216) to rotate is arranged on the outer tube (22); a matching sleeve (217) is arranged outside the screw rod (216); the outer side wall of the matching sleeve (217) is fixedly connected to the inner side wall of the middle tube (21); the inner side wall of the matching sleeve (217) is threadedly matched with the screw rod (216); a horizontal lifting member (219) is arranged on the side wall of the screw rod (216); the lifting member (219) is located above the matching sleeve (217); and one end of the lifting member (219) away from the screw rod (216) is connected to the inner side wall of the outer tube (22).

7. A rapid lifting jack according to claim 6, characterized in that: The transmission member (6) comprises an input shaft (61), a driving gear (62) and a transmission gear (63); the input shaft (61) is rotatably connected to the side wall of the outer tube (22); the driving gear (62) is sleeved on the input shaft (61); the transmission gear (63) is sleeved on the screw rod (216); and the driving gear (62) and the transmission gear (63) are meshed.

8. A rapid lifting jack according to claim 7, characterized in that: The matching sleeve (217) is provided with a horizontal base (218) on its outer shell, and the matching sleeve (217) is connected to the inner side wall of the middle tube (21) via the base (218).

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