Convenient lifting supporting leg for vehicle

Abstract

The utility model discloses a convenient vehicle lifting supporting leg which comprises an inner sleeve which is fixed in position and extends downwards, a screw coaxial with the inner sleeve is arranged in the inner sleeve, a gap is reserved between the screw and the inner sleeve in the circumferential direction, and a threaded sleeve is coaxially arranged at the gap. The inner ring of the thread bushing is provided with an internal thread and is in threaded connection with the screw rod, and the thread bushing is fixedly connected with the inner sleeve; a sliding part is arranged at the upper end of the screw rod and is in sliding fit with the inner sleeve; the lower end of the screw extends downwards out of the inner sleeve and is coaxially and fixedly connected with a locking shaft section and a supporting rod downwards in sequence, and the lower end of the supporting rod is connected with a base. The inner sleeve is sleeved with an outer sleeve in a sliding mode, the outer sleeve is connected with the locking shaft section through a locking mechanism, and the locking mechanism has a locking state and an unlocking state. The utility model provides a novel supporting leg lifting structure which is convenient to lift and adjust. In a locking state, the lifting adjustment of the supporting legs can be realized; in the unlocking state, lifting adjustment of the supporting legs cannot be conducted, operation is easy, and the adaptive capacity is high.

Description

Technical Field

[0001] The utility model relates to the technical field of parking legs, in particular to a convenient lifting support leg for a vehicle. Background Art

[0002] The function of the parking legs is to balance and stabilize the vehicle and reduce the load on the tires. Especially when the engineering vehicle is parked, the operating equipment it carries creates pressure on the vehicle that needs to be balanced by the parking legs.

[0003] The existing patents with authorization announcement numbers CN106184142B and CN213502238U disclose technical solutions including a rotating retractable device for fixing the legs to be folded or lowered, relying on a positioning chuck and a pull rod assembly to fix the legs in steps, but this positioning method will cause the legs to be in a cantilever state for a long time, and the pull rod assembly will be subjected to greater force; two bevel gears and a lead screw nut are used to achieve the lifting and lowering of the legs, but the active bevel gear needs to be applied with the help of another wrench; the bottom of the square tube is connected to the base with a pin shaft, and the pin shaft can only ensure rotation along the axial direction of the pin shaft, and cannot adapt to the uneven bottom surface in different situations.

[0004] In order to solve and improve the above problems and make the vehicle-mounted support leg that moves with the vehicle more convenient to use, the applicant has optimized the support leg structure and proposed a new vehicle-mounted lifting support leg. Utility Model Content

[0005] In order to solve the problems in the prior art, the utility model provides a convenient vehicle lifting support leg.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A convenient vehicle lifting support leg comprises a lifting support leg, the lifting support leg comprises an inner sleeve which is fixed in position and extends downward, a screw rod coaxial with the inner sleeve is arranged in the inner sleeve, a gap is left between the screw rod and the inner sleeve in the circumferential direction, a threaded sleeve is coaxially arranged at the gap; an inner ring of the threaded sleeve is provided with an internal thread and is threadedly connected with the screw rod, and the threaded sleeve is fixedly connected with the inner sleeve at the same time;

[0008] The upper end of the screw rod is provided with a sliding part, and the sliding part forms a sliding fit with the inner sleeve; the lower end of the screw rod extends downward from the inner sleeve, and is coaxially fixedly connected with a locking shaft section and a support rod in sequence downward, and the lower end of the support rod is connected with a base;

[0009] An outer sleeve is provided on the outer sliding sleeve of the inner sleeve, and the outer sleeve is connected to the locking shaft section by a locking mechanism, and the locking mechanism has a locking state and an unlocking state; in the locked state, the rotation of the outer sleeve will drive the locking shaft section to rotate; in the unlocked state, the rotation of the outer sleeve will not drive the locking shaft section to rotate.

[0010] Preferably, the locking mechanism comprises a plurality of claw grooves evenly distributed in a circumferential manner on the outer circumference of the locking shaft segment, and a locking sleeve rotatably sleeved on the locking shaft segment, the locking sleeve comprising a horizontal segment, the horizontal segment having a horizontal channel therein, the horizontal channel being partially connected to the claw groove;

[0011] A slider is provided in the horizontal channel and is slidably matched with the slider. A claw is fixed on one side of the slider facing the claw groove. A horizontally extending claw shaft is fixed on the other side of the slider. The claw shaft extends out of the horizontal section of the locking sleeve and is connected to a locking and unlocking switching device.

[0012] An elastic member is sleeved on the claw shaft, and a baffle is fixedly provided at the end of the horizontal section; the two ends of the elastic member are respectively connected to the baffle and the slider;

[0013] A connecting sleeve is fixedly provided on the outside of the locking sleeve, and the upper end of the connecting sleeve extends upward into the outer sleeve and is fixedly connected with the outer sleeve.

[0014] Preferably, the locking and unlocking switching device comprises a knob fixedly connected to the outer end of the claw shaft;

[0015] The horizontal section of the locking sleeve is connected to the baffle plate by two symmetrically distributed screws, and the head height of the screw is higher than the depth of the claw groove;

[0016] In the locked state, the knob is located at a position where the line connecting the two screws is perpendicular. At this time, the claw shaft moves to one side of the claw groove under the action of the elastic member until the claw extends into the claw groove. At this time, the locking mechanism and the locking shaft section are locked; the outer sleeve is rotated, and the outer sleeve drives the locking sleeve to rotate through the connecting sleeve. The locking sleeve drives the locking shaft section to rotate through the claw and the claw groove, thereby realizing the rotation of the screw. The rotation of the screw realizes the lifting and lowering of the screw relative to the threaded sleeve and the inner sleeve, thereby realizing the lifting and lowering adjustment of the support leg;

[0017] In the unlocked state, turn the knob to the line connecting the two screws, that is, the knob directly contacts the two screws. At this time, the claw axis moves outward and the claw is out of the claw groove. At the same time, the elastic part is compressed. At this time, the locking mechanism and the locking shaft section are unlocked; rotate the outer sleeve, and the outer sleeve drives the locking sleeve to rotate through the connecting sleeve. The rotation of the locking sleeve will not drive the locking shaft section to rotate, and will not drive the screw to rotate.

[0018] Preferably, the locking shaft section has a smaller diameter than the screw and forms a shaft shoulder, and the upper end of the locking sleeve contacts and cooperates with the shaft shoulder; a retaining ring is provided on the lower fixed sleeve of the locking shaft section, and the lower end of the locking sleeve contacts and cooperates with the retaining ring.

[0019] Preferably, an operating portion is provided on the outer sleeve.

[0020] Preferably, the operating part includes a clamp fixedly mounted on the outside of the outer sleeve, and a handle is hinged on the clamp, and the handle can rotate along the hinge point;

[0021] A handle clip is also fixedly arranged on the outer sleeve, and when the handle is not in use, the handle can be embedded in the handle clip.

[0022] Preferably, the sliding portion is a support end cover fixedly arranged on the upper end of the screw rod, and the support end cover is arranged inside the inner sleeve.

[0023] Preferably, a ball head is fixedly provided at the lower end of the support rod, and the ball head is limited on the base by a base cover plate to achieve a rotational connection between the lower end of the support rod and the base.

[0024] Preferably, it also includes a fixed hinge arranged on the vehicle body, one end of which is fixedly provided with a rotating shaft; the upper end of the inner sleeve is fixedly connected with a support hinge, one end of which is a through hole, and is rotatably connected to the rotating shaft through the through hole, so as to realize the switching of the lifting support leg between the vertical supporting state and the horizontal retracted state;

[0025] A first locking pin hole is provided at the other end of the fixed hinge, and a first latch is provided in the first locking pin hole, and the first latch is used to lock the position of the lifting support leg in the vertical supporting state;

[0026] A fixed latch seat is also provided on the vehicle body, and two groups of second locking pin holes are provided on the fixed latch seat. The two groups of second locking pin holes correspond to the two sides of the lifting support leg respectively. A second latch is provided in the second locking pin hole, and the second latch realizes locking the position of the lifting support leg in the horizontal retracted state.

[0027] Preferably, the locking pin hole includes a circular hole of the main body and a notch arranged laterally of the circular hole; and the first latch and the second latch are both provided with a protrusion that matches the notch.

[0028] Beneficial effects of the utility model:

[0029] 1. The utility model proposes a new supporting leg lifting structure, which is convenient for lifting and adjusting, and is also provided with a locking mechanism, which has a locking state and an unlocking state; in the locked state, the supporting leg can be lifted and adjusted; in the unlocking state, the supporting leg cannot be lifted and adjusted, and the operation is simple and the adaptability is strong.

[0030] 2. The utility model is also provided with a support hinge in cooperation with the lifting support leg, and the lifting support leg is rotatably connected with the support hinge, so as to realize the switching of the lifting support leg between the vertical supporting state and the horizontal retracted state.

[0031] And the position locking of the lifting support leg in the vertical supporting state is realized through the first locking pin hole on the support hinge and the matching first latch pin; the position locking of the lifting support leg in the horizontal retracted state is realized through the second locking pin hole on the fixed latch pin seat and the matching second latch pin;

[0032] Through the above-mentioned matching arrangement, the lifting support legs of the utility model can be switched and stabilized in corresponding states, so as to adapt to different working occasions.

[0033] 3. In the utility model, the support rod and the base are rotatably connected through a ball head. When the base is placed on an uneven ground, the support rod can adjust its angle automatically to adapt to different terrains.

[0034] 4. The utility model has an operating part on the outer sleeve, and the operating part is a retractable handle, so that the handle follows the supporting leg, and no additional wrench is required when in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the lifting support leg in the first embodiment;

[0036] Figure 2 for Figure 1 An enlarged view of the middle locking mechanism;

[0037] Figure 3 It is a front view of the fixed hinge in the first embodiment;

[0038] Figure 4 for Figure 3 Bottom view of

[0039] Figure 5 This is a schematic diagram of the installation position of the lifting support legs in the second embodiment;

[0040] Figure 6 This is a schematic diagram of the installation position of the lifting support legs in the second embodiment.

[0041] The drawings are only used for illustrative purposes and should not be construed as limitations on this patent. In order to better illustrate this embodiment, some parts of the drawings may be omitted, enlarged, or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0043] Embodiment 1:

[0044] like Figure 1 and Figure 2As shown, this embodiment provides a convenient vehicle lifting support leg, including a lifting support leg, the lifting support leg includes an inner sleeve 1 that is fixed and extends downward, a screw rod 2 coaxial with the inner sleeve 1 is arranged inside the inner sleeve 1, a gap is left between the screw rod 2 and the inner sleeve 1 in the circumferential direction, a threaded sleeve 3 is coaxially arranged at the gap, and the threaded sleeve 3 is a copper sleeve. The inner ring of the threaded sleeve 3 is provided with an internal thread (the thread is a self-locking thread) and is threadedly connected with the screw rod 1. The threaded sleeve 3 is also fixedly connected with the inner sleeve 1 by a set screw 4.

[0045] The upper end of the screw rod 2 is fixedly connected with a support end cover 5 by a screw, and the support end cover 5 is arranged inside the inner sleeve 1 to form a sliding fit therewith. The lower end of the screw rod 2 extends downward from the inner sleeve 1, and is coaxially fixedly connected with a locking shaft section 6 and a ball head support rod 7 in sequence downward.

[0046] The lower end of the ball head support rod 7 is a ball head, and the ball head is limited on the base 8 through the base cover plate 9 to realize the rotational connection between the ball head support rod 7 and the base 8. When the base 8 is placed on an uneven ground, the ball head support rod 7 can adjust its angle by itself to adapt to different terrains.

[0047] An outer sleeve 10 is slidably sleeved outside the inner sleeve 1, and an operating part is also provided on the outer sleeve.

[0048] Specifically, the operating part includes a clamp 11 fixedly mounted on the outside of the outer sleeve 10, and a handle 12 is hinged on the clamp 11. The handle 12 can rotate along the hinge point. When the handle 12 is rotated to a state perpendicular to the outer sleeve 10, the outer sleeve 10 can be easily driven to rotate by the handle 12.

[0049] In order to prevent the handle from swinging and affecting driving when the supporting legs are in the retracted state, a handle clamp 13 is fixedly provided at a corresponding position of the outer sleeve. When the handle 12 is not in use, the handle 12 can be embedded in the handle clamp 13.

[0050] The outer sleeve 10 is connected to the locking shaft segment 6 via a locking mechanism, which has a locked state and an unlocked state. In the locked state, the rotation of the outer sleeve 10 will drive the locking shaft segment 6 to rotate; in the unlocked state, the rotation of the outer sleeve 10 will not drive the locking shaft segment 6 to rotate.

[0051] Specifically, the locking mechanism includes a plurality of claw grooves 14 evenly distributed in a circular pattern on the outer circumference of the locking shaft segment 6, and a locking sleeve 15 rotatably sleeved on the locking shaft segment 6, the locking sleeve 15 includes a horizontal section 16, the horizontal section 16 has a horizontal channel, and the horizontal channel is partially connected to the claw groove 14.

[0052] A slider is provided in the horizontal channel and is slidably matched therewith. A claw 17 is fixed to the side of the slider facing the claw groove 14, and a horizontally extending claw shaft 18 is fixed to the other side of the slider. The claw shaft 18 extends out of the horizontal section 16 of the locking sleeve 15 and is connected to a locking and unlocking switching device.

[0053] A compression spring 27 is sleeved on the claw shaft 18, and a baffle 19 is fixedly provided at the end of the horizontal section 16 to prevent the compression spring 27 from falling out; the two ends of the compression spring 27 are respectively connected to the baffle 19 and the slider.

[0054] A connecting sleeve 20 is fixedly provided on the outside of the locking sleeve 15 , and the upper end of the connecting sleeve 20 extends upward into the outer sleeve 10 and is fixedly connected to the outer sleeve 10 .

[0055] In this embodiment, the locking and unlocking switching device includes a knob 21 fixedly connected to the outer end of the claw shaft 18. As for the fixing method between the horizontal section 16 of the locking sleeve 15 and the baffle 19, it is preferred to use two symmetrically distributed screws 22 for connection, and the head height of the screw 22 is higher than the depth of the claw groove 14.

[0056] In the locked state, the knob 21 is located at a position where the line connecting the two screws 22 is perpendicular. At this time, the claw shaft 18 moves to the side of the claw groove 14 under the action of the compression spring 27 until the claw 17 extends into the claw groove 14. At this time, the locking mechanism and the locking shaft section 6 are locked; the outer sleeve 10 is rotated, and the outer sleeve 10 drives the locking sleeve 15 to rotate through the connecting sleeve 20. The locking sleeve 15 drives the locking shaft section 6 to rotate through the claw 17 and the claw groove 14, thereby realizing the rotation of the screw 2. The rotation of the screw 2 realizes its lifting and lowering relative to the threaded sleeve 3 and the inner sleeve 1, thereby realizing the lifting and lowering adjustment of the lifting support leg.

[0057] In the unlocked state, turn the knob 21 to the line connecting the two screws 22, that is, the knob 21 directly contacts the two screws 22. At this time, the claw shaft 18 moves outward and causes the claw 17 to disengage from the claw groove 14. At the same time, the compression spring 27 is compressed. At this time, the locking mechanism and the locking shaft section 6 are unlocked; rotate the outer sleeve 10, and the outer sleeve 10 drives the locking sleeve 15 to rotate through the connecting sleeve 20. The rotation of the locking sleeve 15 will not drive the locking shaft section 6 to rotate, and the screw 2 will not rotate.

[0058] In order to prevent the locking sleeve 15 from moving in the axial direction, in this embodiment, the diameter of the locking shaft section 6 is smaller than the screw 2 and forms a shaft shoulder, and the upper end of the locking sleeve 15 contacts and cooperates with the shaft shoulder; a retaining ring 23 is provided at the lower fixed sleeve of the locking shaft section 6, and the lower end of the locking sleeve 15 contacts and cooperates with the retaining ring 23.

[0059] The utility model forms a new lifting support leg structure through the above arrangement, which is convenient for lifting and adjusting, and is also provided with a locking mechanism, which has a locking state and an unlocking state; in the locked state, the supporting leg can be lifted and adjusted; in the unlocking state, the supporting leg cannot be lifted and adjusted, and the operation is simple and the adaptability is strong.

[0060] Embodiment 2:

[0061] like Figures 1 to 5 As shown, this embodiment provides a connection method between the lifting support leg and the vehicle body based on the first embodiment, specifically:

[0062] A fixed hinge 25 is welded at a corresponding position on the vehicle chassis, one end of the fixed hinge 25 is two symmetrical bolt holes 28, and the other end is two symmetrical first locking pin holes 31, and a first latch 41 can be inserted into the first locking pin hole 31. The fixed hinge 25 is matched with a support hinge 24 (the support hinge 24 is welded to the upper end of the inner sleeve 1, and a through hole is provided in the middle of the support hinge 24 at a position corresponding to the support end cover 5, for installing screws and hiding the screw cap), the support hinge 24 is placed in the middle of the fixed hinge, one end of the support hinge 24 is a through hole, the fixed hinge 25 and the support hinge 24 are connected by a rotating shaft, the two ends of the rotating shaft are threaded sections, the middle is a smooth axis end, and passes through a bolt hole of the fixed hinge 25, the through hole of the support hinge 24, and the other bolt hole of the fixed hinge 25 in sequence, that is, the rotating shaft is threadedly connected to the fixed hinge, but is rotatably connected to the support hinge.

[0063] Through the above-mentioned rotational connection, the switching between the vertical supporting state and the horizontal retracted state of the lifting support legs can be achieved.

[0064] The vehicle chassis is also provided with a fixed latch seat 26 , on which are provided two sets of upper and lower second locking pin holes 32 , which correspond to the two sides of the lifting support respectively, and into which the second latch pins 42 can be inserted.

[0065] The first locking pin hole 31 and the second locking pin hole 32 include a circular hole of the main body and notches arranged on both sides of the circular hole; the first latch 41 and the second latch 42 are both provided with protrusions matching with the notches, and the protrusions can only enter and exit from the notches.

[0066] When the lifting support leg is not working and is in a horizontally retracted state, the lifting support leg is rotated with the bolt hole of the fixed hinge 25 as the axis, and the lower end of the lifting support leg is rotated between the two groups of second locking pin holes of the fixed pin seat 26 and fixed by two second pins 42 respectively, thereby locking the lifting support leg in the horizontally retracted state.

[0067] When using the lifting support leg, pull out the two second pins 42, and rotate the lifting support leg with the bolt hole of the fixed hinge 25 as the axis, so that the support hinge 24 fits the fixed hinge 25, and insert the first pin 41 into the first locking pin hole of the support hinge 24. At this time, the support hinge 24 is restricted by the first pin 41 and cannot rotate, thereby fixing the position relationship between the lifting support leg and the vehicle chassis, thereby realizing the position locking of the lifting support leg in the vertical supporting state.

[0068] The first latch 41 and the second latch 42 are not limited to being connected to the vehicle chassis using a chain or a wire rope to prevent loss.

[0069] In this embodiment, the fixed hinge 25 and the fixed latch seat 26 are arranged at the longitudinal beam 50 .

[0070] Embodiment three:

[0071] like Figure 6 As shown, the difference between this embodiment and the second embodiment is that the position where the lifting support legs are installed on the vehicle chassis is different. Specifically, in this embodiment, the fixed hinge 25 and the fixed latch seat 26 are arranged at the position of the crossbeam 60.

[0072] The above embodiments are only used to illustrate rather than limit the technical solutions of the present invention. Although the present invention is described in detail with reference to the above embodiments, those skilled in the art should understand that the present invention can still be modified or replaced by equivalents. Any modification or partial replacement that does not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.

[0073] If the words "first", "second" and so on are used in this document to limit components, those skilled in the art should know that the use of "first" and "second" is only for the convenience of describing the utility model and simplifying the description. Unless otherwise stated, the above words have no special meaning.

[0074] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0075] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A convenient vehicle lifting support leg, characterized by: The lifting support leg comprises an inner sleeve which is fixed in position and extends downward, a screw rod coaxial with the inner sleeve is arranged in the inner sleeve, a gap is left between the screw rod and the inner sleeve in the circumferential direction, a threaded sleeve is coaxially arranged at the gap; the inner ring of the threaded sleeve is provided with an internal thread and is threadedly connected with the screw rod, and the threaded sleeve is fixedly connected with the inner sleeve at the same time; The upper end of the screw rod is provided with a sliding part, and the sliding part forms a sliding fit with the inner sleeve; the lower end of the screw rod extends downward from the inner sleeve, and is coaxially fixedly connected with a locking shaft section and a support rod in sequence downward, and the lower end of the support rod is connected with a base; An outer sleeve is provided on the outer sliding sleeve of the inner sleeve, and the outer sleeve is connected to the locking shaft section by a locking mechanism, and the locking mechanism has a locking state and an unlocking state; in the locked state, the rotation of the outer sleeve will drive the locking shaft section to rotate; in the unlocked state, the rotation of the outer sleeve will not drive the locking shaft section to rotate.

2. The convenient vehicle lifting support leg according to claim 1, characterized in that: The locking mechanism includes a plurality of claw grooves evenly distributed on the outer circumference of the locking shaft section, and a locking sleeve rotatably sleeved on the locking shaft section, the locking sleeve includes a horizontal section, a horizontal channel is provided in the horizontal section, and the horizontal channel is partially connected to the claw groove; A slider is provided in the horizontal channel and is slidably matched with the slider. A claw is fixed on one side of the slider facing the claw groove. A horizontally extending claw shaft is fixed on the other side of the slider. The claw shaft extends out of the horizontal section of the locking sleeve and is connected to a locking and unlocking switching device. An elastic member is sleeved on the claw shaft, and a baffle is fixedly provided at the end of the horizontal section; the two ends of the elastic member are respectively connected to the baffle and the slider; A connecting sleeve is fixedly provided on the outside of the locking sleeve, and the upper end of the connecting sleeve extends upward into the outer sleeve and is fixedly connected with the outer sleeve.

3. The convenient vehicle lifting support leg according to claim 2, characterized in that: The locking and unlocking switching device includes a knob fixedly connected to the outer end of the claw shaft; The horizontal section of the locking sleeve is connected to the baffle plate by two symmetrically distributed screws, and the head height of the screw is higher than the depth of the claw groove; In the locked state, the knob is located at a position where the line connecting the two screws is perpendicular. At this time, the claw shaft moves to one side of the claw groove under the action of the elastic member until the claw extends into the claw groove. At this time, the locking mechanism and the locking shaft section are locked; the outer sleeve is rotated, and the outer sleeve drives the locking sleeve to rotate through the connecting sleeve. The locking sleeve drives the locking shaft section to rotate through the claw and the claw groove, thereby realizing the rotation of the screw. The rotation of the screw realizes the lifting and lowering of the screw relative to the threaded sleeve and the inner sleeve, thereby realizing the lifting and lowering adjustment of the support leg; In the unlocked state, turn the knob to the line connecting the two screws, that is, the knob directly contacts the two screws. At this time, the claw axis moves outward and the claw is out of the claw groove. At the same time, the elastic part is compressed. At this time, the locking mechanism and the locking shaft section are unlocked; rotate the outer sleeve, and the outer sleeve drives the locking sleeve to rotate through the connecting sleeve. The rotation of the locking sleeve will not drive the locking shaft section to rotate, and will not drive the screw to rotate.

4. The convenient vehicle lifting support leg according to claim 2, characterized in that: The locking shaft section has a smaller diameter than the screw and forms a shaft shoulder, and the upper end of the locking sleeve contacts and cooperates with the shaft shoulder; a retaining ring is provided under the fixing sleeve of the locking shaft section, and the lower end of the locking sleeve contacts and cooperates with the retaining ring.

5. The convenient vehicle lifting support leg according to any one of claims 1 to 4, characterized in that: An operating part is arranged on the outer sleeve.

6. The convenient vehicle lifting support leg according to claim 5, characterized in that: The operating part includes a clamp fixedly mounted on the outside of the outer sleeve, and a handle is hinged on the clamp, and the handle can rotate along the hinge point; A handle clip is also fixedly arranged on the outer sleeve, and when the handle is not in use, the handle can be embedded in the handle clip.

7. The convenient vehicle lifting support leg according to any one of claims 1 to 4, characterized in that: The sliding part is a support end cover fixedly arranged on the upper end of the screw rod, and the support end cover is arranged inside the inner sleeve.

8. The convenient vehicle lifting support leg according to any one of claims 1 to 4, characterized in that: A ball head is fixedly provided at the lower end of the support rod, and the ball head is limited on the base through the base cover plate to achieve a rotational connection between the lower end of the support rod and the base.

9. The convenient vehicle lifting support leg according to any one of claims 1 to 4, characterized in that: It also includes a fixed hinge arranged on the vehicle body, one end of which is fixedly provided with a rotating shaft; the upper end of the inner sleeve is fixedly connected with a support hinge, one end of the support hinge is a through hole, and is rotatably connected to the rotating shaft through the through hole to realize the switching of the lifting support leg between the vertical supporting state and the horizontal retracted state; A first locking pin hole is provided at the other end of the fixed hinge, and a first latch is provided in the first locking pin hole, and the first latch is used to lock the position of the lifting support leg in the vertical supporting state; A fixed latch seat is also provided on the vehicle body, and two groups of second locking pin holes are provided on the fixed latch seat. The two groups of second locking pin holes correspond to the two sides of the lifting support leg respectively. A second latch is provided in the second locking pin hole, and the second latch realizes locking the position of the lifting support leg in the horizontal retracted state.

10. The convenient vehicle lifting support leg according to claim 9, characterized in that: The locking pin hole comprises a circular hole of the main body and a notch arranged on the side of the circular hole; the first latch pin and the second latch pin are both provided with a protrusion matched with the notch.

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