CN212609254U - Multifunctional portable frame lifting device for motorcycle - Google Patents

Abstract

The utility model discloses a multifunctional portable carriage lifting device for motorcycles, which comprises a vertical mechanism and a top stick, wherein the vertical mechanism comprises a lifting screw, a lifting nut, a pulling mechanism and a universal base, the lifting nut is sleeved on the lifting screw, the lifting nut moves up and down on the lifting screw through the pulling mechanism, and the lifting screw is connected with the universal base through an extension nut; the inside cavity of top rod to the head detachable of top rod is provided with supporting mechanism, and the lower part cover of top rod is located on the screw rod of getting up the car. The utility model adopts the modularized combination mode to be suitable for motorcycles with different structures, realizes the start function of motorcycles (single rocker arm or double rocker arms) with different structures through three support structures which can be disassembled and combined, and effectively saves the use cost of users; the utility model discloses a frame device that plays car extensive applicability, structure are reliable, reasonable in design, it is convenient to use, and the key is conveniently carried.

Description

Multifunctional portable frame lifting device for motorcycle

Technical Field

The utility model relates to a multi-functional portable frame device that plays for motorcycle.

Background

The motorcycle is used as a motor vehicle, has small volume, high speed and convenient travel, and is widely popular with consumers due to the convenience. However, such motorcycles require regular cleaning and lubrication of the transmission parts of the motorcycle, such as the chain, the large and small sprockets, etc., and if the transmission parts of the motorcycle are not regularly maintained, abnormal wear of the transmission parts will be caused, which will greatly reduce the service life of the transmission parts and generate great frictional noise, and if the cleaning effect and efficiency when the rear wheel hub is rotated during the process of cleaning the motorcycle wheel hub are greatly improved compared with the case where the rear wheel hub cannot be rotated. In general, maintenance and cleaning of transmission parts of a motorcycle require auxiliary equipment to lift a rear wheel of the motorcycle, and a lifting frame is auxiliary equipment capable of lifting a front wheel or a rear wheel of the motorcycle during simple maintenance of the motorcycle. The traditional frame of getting off all adopts integral type structural design to form, and is bulky, though solid structure, inconvenient vehicle-mounted carries, this has just caused the transmission part of the unable convenient maintenance motorcycle of ground and has washd the whole car of motorcycle, especially when going out the long-distance motorcycle of riding.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a multifunctional portable frame lifting device for motorcycle.

To achieve the above object, the present invention adopts the following:

a multifunctional portable lifting frame device for motorcycles, comprising: the vertical mechanism comprises a lifting screw rod, a lifting nut, a pulling mechanism and a universal base, the lifting nut is sleeved on the lifting screw rod and is in threaded connection with the lifting screw rod, a planar thrust ball bearing is further arranged above the lifting nut and is sleeved on the lifting screw rod, the lifting nut moves up and down on the lifting screw rod through the pulling mechanism, and the lifting screw rod is connected with the universal base through an extension nut; the inside cavity of top rod to the head detachable of top rod is provided with supporting mechanism, and the lower part cover of top rod is located on the screw rod of getting up the car.

The utility model designs the lifting frame device into a structure which can be disassembled and disassembled, when the lifting frame is not needed, all parts of the lifting frame can be disassembled for storage, thereby saving the storage space and facilitating the carrying of the motorcycle; when needs use the frame of getting up, for example when rinsing the transmission part of lubricated maintenance motorcycle or rinsing the whole motorcycle, can assemble into the frame fast each part, and then conveniently get up the maintenance transmission part with the rear wheel carrier of motorcycle, the utility model discloses a frame of getting up device reliable in structure, reasonable in design, it is convenient to use, and the key is conveniently carried.

Preferably, the supporting mechanism includes horizontal screw rod, a bearing, No. two bearings and ring type connector, ring type connector includes locking screw rod and sets up the ring type body on locking screw rod, locking screw rod sets up in the head of top rod to with top rod threaded connection, one side of horizontal screw rod is located to the ring type body cover, and the both ends of ring type body are screwed up through the nut respectively, a bearing and No. two bearings set up in the opposite side of horizontal screw rod, are provided with the clamping piece between a bearing and No. two bearings, press from both sides the fastening of a bearing and No. two bearings on horizontal screw rod through two nuts.

The utility model discloses supporting mechanism in the carriage lifting device is the back chain stay or the hollow rear axle that need act on the motorcycle, the back chain stay is motorcycle major structure's important component, install in the lower rear of motorcycle, play the effect of connecting and supporting frame and rear wheel, bear the load between rear wheel and the frame and keep the stability of vehicle, and the back chain stay of motorcycle can divide into single rocking arm and two rocking arms, and the motorcycle of single rocking arm all has hollow rear axle, be single rocking arm motorcycle when the motorcycle, can adopt this supporting mechanism, only need be provided with that head of horizontal screw rod of a bearing and No. two bearings from hollow rear axle right side insert can.

Preferably, the surfaces of the first bearing and the second bearing are wrapped with a layer of heat-shrinkable rubber sleeve. The thermal shrinkage rubber sleeve has good elasticity and compression deformation resistance, can be effectively wrapped on the outer surfaces of the first bearing and the second bearing, and reduces the clearance between the first bearing and the second bearing and the inner diameter of the hollow rear wheel shaft, so that the rear wheel can better rotate after being erected.

Preferably, the supporting mechanism comprises a shaft rod and a ring-shaped connecting piece, the ring-shaped connecting piece comprises a locking screw rod and a ring-shaped body arranged on the locking screw rod, the locking screw rod is arranged at the head of the ejector rod and is in threaded connection with the ejector rod, and the ring-shaped body is sleeved on the shaft rod. When the motorcycle is a single-rocker motorcycle and the diameter of the hollow rear wheel axle is smaller, the supporting mechanism can be adopted only by inserting the shaft rods into the hollow rear wheel axle.

Preferably, the supporting mechanism is L type connector, L type connector includes locking screw and sets up the L type supporting seat on locking screw, locking screw sets up in the head of top rod to with top rod threaded connection, L type supporting seat includes diaphragm and the riser that mutually perpendicular set up, diaphragm fixed connection is on locking screw, be provided with U type recess on the riser. When the motorcycle is a double-rocker motorcycle, the supporting mechanism can be adopted to act on the rocker of the rear bottom fork of the motorcycle or the lifting nail.

Preferably, the start nut comprises a rotating nut and a lantern ring, the rotating nut is sleeved on the start screw and connected with the start screw through the screw, and the lantern ring is arranged on the side part of the rotating nut; the pulling mechanism comprises a rod body and a limiting ring, the limiting ring is arranged on one side of the rod body, the rod body is inserted into the sleeve ring in a penetrating mode, and the pulling mechanism is used for twisting the starting nut to move up and down on the starting screw rod. Utilize lever principle, can be more light twist the rotation with the nut that gets off, practiced thrift time and manpower.

Preferably, the start nut is a rotating nut, and the rotating nut is sleeved on the start screw and connected with the start screw through a screw; the pulling mechanism is a wrench, the wrench is matched with the rotating nut, and the pulling mechanism is used for twisting the lifting nut to move up and down on the lifting screw rod. The spanner is a common mounting and dismounting tool, is used for screwing and rotating a rotating nut by utilizing a lever principle, and has relatively simple structure and low cost.

Compared with the prior art, the utility model has the advantages of: the utility model designs the lifting frame device into a structure which can be disassembled and disassembled, when the lifting frame is not needed, all parts of the lifting frame can be disassembled for storage, thereby saving the storage space and facilitating the carrying of the motorcycle; when the lifting frame is needed, such as cleaning and lubricating transmission parts of a maintenance motorcycle or cleaning the whole motorcycle, all the parts can be quickly assembled into the lifting frame, so that the rear wheel frame of the motorcycle can be conveniently lifted up to maintain the transmission parts; the utility model adopts the modularized combination mode to be suitable for motorcycles with different structures, realizes the start function of motorcycles (single rocker arm or double rocker arms) with different structures through three support structures which can be disassembled and combined, and effectively saves the use cost of users; the utility model discloses a frame device that plays car extensive applicability, structure are reliable, reasonable in design, it is convenient to use, and the key is conveniently carried.

Drawings

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of a first embodiment of the present invention;

FIG. 2 is an exploded view of FIG. 1;

fig. 3 is a schematic structural diagram of a second embodiment of the present invention;

FIG. 4 is an exploded view of FIG. 3;

fig. 5 is a schematic structural diagram of a third embodiment of the present invention;

FIG. 6 is an exploded view of FIG. 5;

in the figures, the various reference numbers are:

100-vertical mechanism, 110-lifting screw rod, 120-lifting nut, 121-rotating nut, 122-lantern ring, 130-universal base, 140-pulling mechanism, 141-limiting ring, 142-rod body, 150-extension nut, 160-plane thrust ball bearing, 200-top rod, 300-supporting mechanism I, 310-transverse screw rod, 320-first bearing, 330-second bearing, 340-ring-shaped connecting piece, 341-ring-shaped body I, 342-locking screw rod I, 350-clamping piece, 360-nut, 400-supporting mechanism II, 410-transverse plate, 420-vertical plate, 430-U-shaped groove, 440-locking screw rod II, 500-supporting mechanism III, 510-shaft rod, 520-ring-shaped body II and 530-locking screw rod III.

Detailed Description

In order to illustrate the invention more clearly, the invention is further described below with reference to preferred embodiments. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and is not to be taken as limiting the scope of the invention.

The first embodiment is as follows:

as shown in fig. 1 and 2, for the first embodiment of the present invention, a multifunctional portable frame device for motorcycle comprises: vertical mechanism 100 and top rod 200, vertical mechanism 100 includes the screw rod 110 of getting up, the nut 120 of getting up, pull mechanism 140 and universal base 130, the nut 120 of getting up is located on the screw rod 110 of getting up, and threaded connection between the nut 120 of getting up and the screw rod 110 of getting up, still be provided with plane thrust ball bearing 160 in the top of the nut 120 of getting up, and plane thrust ball bearing 160 covers on the screw rod 110 of getting up, the nut 120 of getting up reciprocates on the screw rod 110 of getting up through pulling mechanism 140, be connected through an extension nut 150 between screw rod 110 of getting up and the universal base 130, the inside cavity of top rod 200, and the head detachable of top rod 200 is provided with supporting mechanism one 300, the lower part cover of top rod 200 is located on the screw rod 110 of getting up.

The first supporting mechanism 300 comprises a transverse screw rod 310, a first bearing 320, a second bearing 330 and an annular connecting piece 340, the annular connecting piece 340 comprises a first locking screw rod 342 and an annular body 341 arranged on the first locking screw rod, the first locking screw rod 342 is arranged at the head of the ejector rod 200 and is in threaded connection with the ejector rod 200, the annular body 341 is sleeved on one side of the transverse screw rod 310, two ends of the annular body 341 are screwed through nuts 360 respectively, one nut is a butterfly nut, for rotation, the first bearing 320 and the second bearing 330 are arranged on the other side of the transverse screw rod 310, the first bearing 320 and the second bearing 330 can rotate relative to the transverse screw rod 310, a clamping piece 350 is arranged between the first bearing and the second bearing, and the first bearing and the second bearing are clamped and fixed on the transverse screw rod through the two nuts. It should be noted that, the first bearing and the second bearing used in this embodiment are rolling bearings, each of which has a structure of an inner ring and an outer ring, and the inner ring of the first bearing and the inner ring of the second bearing are clamped and fixed on the transverse screw rod through two nuts, so that both the outer ring of the first bearing and the outer ring of the second bearing can rotate relative to the transverse screw rod.

The rear wheel of motorcycle all has back chain stay or hollow rear axle, the back chain stay is motorcycle major structure's important component, install in the lower rear of motorcycle, play the effect of connecting and supporting frame and rear wheel, bear the load between rear wheel and the frame and keep the stability of vehicle, the back chain stay is from structural differentiation, mainly divide into single rocking arm and double-rocker arm, and the motorcycle of single rocking arm all has hollow rear axle, the main implementation object of the frame lifting device that this embodiment provided is this kind of single rocking arm motorcycle that has hollow rear axle promptly, it is worth noting, use the utility model provides a when the frame lifting device, the rear foot rest of motorcycle need prop ground, preceding brake handle needs to be fixed.

The specific use mode is as follows: the vertical mechanism 100 is assembled, the planar thrust ball bearing 160 is placed on the lifting nut 120, the lower part of the top rod 200 is sleeved on the lifting screw rod 110, the ring-shaped connector 340 is installed at the head part of the top rod 200, one side of the transverse screw rod 310 is inserted into the ring-shaped body 341, the two ends of the ring-shaped body are screwed and fixed through the two nuts 360, the second bearing 330, the clamping piece 350 and the first bearing 320 are sleeved on the transverse screw rod from the other side of the transverse screw rod in sequence, and the first bearing and the second bearing are clamped and fixed on the transverse screw rod through the two nuts, at this time, the assembly of the lifting frame device is completed. Firstly, the transverse screw rod provided with a first bearing and a second bearing is inserted from the right side of a hollow rear wheel shaft, then the angle of the vertical mechanism 100 is adjusted, the universal base 130 is grounded, at the moment, the pulling mechanism 140 can be used for twisting the vehicle lifting nut 120 to enable the vehicle lifting nut to move upwards on the vehicle lifting screw rod 110, so that the jacking rod 200 sleeved on the vehicle lifting screw rod 110 is jacked to enable the jacking rod to move upwards, further, the transverse screw rod 310 also generates upward displacement, because the rear foot rest of the motorcycle at the other side is grounded, the rear wheel can also move upwards along with the supporting mechanism along with the continuous upward movement of the jacking rod until the rear wheel is grounded, at the moment, the rear wheel can be manually rotated to carry out cleaning, lubricating and maintaining work on the transmission part chain and the large and small flywheels of the motorcycle.

In order to enable the transverse screw rod 310 to be smoothly inserted into the hollow rear wheel shaft, a first bearing and a second bearing with proper sizes are selected according to the size of the inner diameter of the hollow rear wheel shaft of the motorcycle, so that the first bearing and the second bearing can be better attached to the inner structure of the hollow rear wheel shaft. And all wrap up one deck pyrocondensation gum cover (not shown in the figure) in the outer lane of bearing 320 and No. two bearing 330, because the model of motorcycle is numerous, consequently the size of hollow rear wheel axle is also different, and the external diameter of the antifriction bearing of selection is slightly less than the aperture of hollow rear wheel axle, there is about 2 mm's difference, consequently add and establish pyrocondensation gum cover and can reduce certain matching clearance, reach closely matched effect, thereby be favorable to advancing hollow rear wheel axle with the inseparable card of bearing and No. two bearings, guarantee like this that the stull mechanism can be more stable prop up the rear wheel, in addition because pyrocondensation gum cover has good elasticity and resistant compression deformability, also can reduce bearing, No. two bearing friction loss in hollow rear wheel axle inside simultaneously.

It should be noted that the utility model discloses an universal base 130 is universal ball base on the market, can carry out universal range and rotate for satisfy the in-process with the motorcycle rear wheel jack-up, vertical mechanism 200 can adapt to the change of angle. Set up between screw rod 110 and the universal base 130 of getting off and set up extension nut 150's aim at the later stage of being convenient for and maintain the screw rod of getting off, when the screw rod of getting off is by the comparatively serious time of nut wearing and tearing of getting off, can remain original universal base and extension nut, only need change the screw rod of getting off can, make universal base and extension nut can used repeatedly.

When the lower portion of the jack rod 200 is fitted over the jack screw 110, the flat thrust ball bearing 160 is disposed between the jack nut 120 and the jack rod 200, and the flat thrust ball bearing 160 is fitted over the jack screw 110. Because it makes it reciprocate on the screw rod of getting up through twisting the nut of getting up, and the lower part cover of top rod is established on the screw rod of getting up again, and finally the bottom of top rod is with the nut of getting up contact, thereby the motion of the nut of getting up makes the top rod take place the displacement for the screw rod of getting up and remove, the purpose of setting up plane thrust ball bearing is just in order to reduce when twisting rotatory nut of getting up, reduce the nut of getting up and to the friction damage that top rod bottom and screw rod screw thread caused, also can play the effect of province simultaneously.

It should be noted that the start nut 120 includes a rotating nut 121 and a collar 122, the rotating nut 121 is sleeved on the start screw 110 and connected with the start screw 110, the collar 122 is disposed on a side portion of the rotating nut 121 and perpendicular to the rotating nut, and the collar and the rotating nut are welded and fixed; pulling mechanism 140 includes the body of rod 142 and spacing ring 141, spacing ring 141 sets up in the one side of the body of rod 142, a locking piece (not shown in the figure) of opposite side detachable suit of the body of rod 142, the locking piece chooses for use the fitting pin, one kind in lock nut or the break-out, the in-process body of rod from the lantern ring landing is avoided pulling rotatory nut to the purpose of setting up locking piece and spacing ring, the body of rod 142 alternates in the lantern ring 122, the body of rod 142 can be in lantern ring 122 interior left and right round trip motion, twist the nut of starting 120 through pulling mechanism 140 and reciprocate on the screw rod of starting. Of course, the lifting nut 120 may also only include one rotating nut 121, and the pulling mechanism 140 may directly employ a wrench, such as a ratchet wrench, which is a common mounting and dismounting tool, and which utilizes the lever principle to turn the rotating nut, so that the structure is relatively simple and the cost is low.

Example two:

as shown in fig. 3 and 4, the difference between the first embodiment and the second embodiment is the difference of the supporting mechanism, and the structure and the installation manner of the vertical mechanism 100 and the top roller 200 are the same, the supporting mechanism 400 in the present embodiment is an L-shaped coupling member, and includes a second locking screw 440 and an L-shaped supporting seat disposed on the second locking screw 440, the L-shaped supporting seat includes a horizontal plate 410 and a vertical plate 420 disposed perpendicular to each other, the horizontal plate 410 is fixedly connected to the second locking screw 440, and the vertical plate 420 is provided with a U-shaped groove 430.

The rear wheel both sides of two rocking arm motorcycles all are fixed with the suspension support arm, and the main implementation object of the frame device that plays that this embodiment provided is this kind of two rocking arm motorcycles that have suspension support arm promptly, and it is worth noting that, using the utility model provides a when playing the frame device, the collateral branch frame of motorcycle need prop ground, and preceding brake is fixed need.

The specific use mode is as follows: the vertical mechanism 100 is assembled, then the lower part of the jacking rod 200 is sleeved on the lifting screw rod 110, and then the locking screw rod two 440 of the L-shaped connecting piece is arranged at the head part of the jacking rod 200, at this time, the frame lifting device is assembled. Only the supporting mechanism 400 is required to be propped below the rear rocker on one side of the rear wheel, specifically, the rear rocker is erected on an L-shaped supporting seat or a lifting nail on the rear wheel of the motorcycle is clamped in a U-shaped groove, then the angle of the vertical mechanism 100 is adjusted, the universal base 130 is grounded, at this time, the lifting nut 120 can be screwed through the wrenching mechanism 140 to move upwards on the lifting screw 110, so that the lifting rod 200 sleeved on the lifting screw 110 is jacked to move upwards, further, the supporting mechanism 400 also generates upwards displacement, and as the side bracket on the left side of the motorcycle is grounded, along with the continuous upwards movement of the lifting rod, the rear wheel can also move upwards along with the supporting mechanism 400 until the rear wheel is lifted off the ground, at this time, the rear wheel can be manually rotated to perform cleaning, lubricating and maintaining work on the transmission part chain and the large and small flywheel of the motorcycle.

Example three:

as shown in fig. 5 and fig. 6, the difference between the first embodiment and the second embodiment is also the difference of the supporting mechanism, and the structure and the installation manner of the vertical mechanism 100 and the top stick 200 are the same, the supporting mechanism 500 in the present embodiment includes a shaft 510 and a second annular body 520 disposed on a third locking screw 530, the third locking screw 530 is disposed on the head of the top stick 200 and is in threaded connection with the top stick 200, and the second annular body 520 is sleeved on the shaft 510.

The main implementation object of the frame device that gets off that this embodiment provided is the double-rocker motorcycle type that has lower side bearer, and it is worth noting that, using the utility model provides a when getting off the frame device, the side bearer of motorcycle need prop ground, and preceding brake is fixed the needs.

The specific use mode is as follows: the vertical mechanism 100 is assembled, the lower part of the top stick 200 is sleeved on the lifting screw 110, the locking screw III 530 is installed at the head of the top stick 200, the shaft rod 510 is inserted on the annular body II 520, and the assembly of the lifting frame device is completed. The other end of the shaft lever 510 is directly inserted into the hollow rear wheel shaft, then the angle of the vertical mechanism 100 is adjusted, the universal base 130 contacts the ground, at this time, the pulling mechanism 140 can be used for screwing the vehicle lifting nut 120, so that the vehicle lifting nut moves upwards on the vehicle lifting screw 110, the jacking rod 200 sleeved on the vehicle lifting screw 110 is jacked, the jacking rod also moves upwards, further, the supporting mechanism 500 also generates upward displacement, because the rear foot rest of the motorcycle on the other side is grounded, the rear wheel can also move upwards along with the supporting mechanism 500 along with the continuous upward movement of the jacking rod until the rear wheel leaves the ground, at this time, the rear wheel can be manually rotated to clean, lubricate and maintain the transmission part chains and the large and small flywheels of the motorcycle.

Obviously, the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention, and it is obvious for those skilled in the art to make other variations or changes based on the above descriptions, and all the embodiments cannot be exhausted here, and all the obvious variations or changes that belong to the technical solutions of the present invention are still in the protection scope of the present invention.

Claims (7)

1. A multifunctional portable lifting frame device for motorcycles is characterized by comprising: the vertical mechanism comprises a lifting screw rod, a lifting nut, a pulling mechanism and a universal base, the lifting nut is sleeved on the lifting screw rod and is in threaded connection with the lifting screw rod, a planar thrust ball bearing is further arranged above the lifting nut and is sleeved on the lifting screw rod, the lifting nut moves up and down on the lifting screw rod through the pulling mechanism, and the lifting screw rod is connected with the universal base through an extension nut; the inside cavity of top rod to the head detachable of top rod is provided with supporting mechanism, and the lower part cover of top rod is located on the screw rod of getting up the car.

2. The multifunctional portable motorcycle lifting frame device according to claim 1, wherein the supporting mechanism comprises a transverse screw, a first bearing, a second bearing and a ring-shaped connecting member, the ring-shaped connecting member comprises a locking screw and a ring-shaped body arranged on the locking screw, the locking screw is arranged at the head of the top stick and is in threaded connection with the top stick, the ring-shaped body is sleeved on one side of the transverse screw, two ends of the ring-shaped body are screwed through nuts respectively, the first bearing and the second bearing are arranged on the other side of the transverse screw, a clamping member is arranged between the first bearing and the second bearing, and the first bearing and the second bearing are clamped and fixed on the transverse screw through two nuts.

3. The multifunctional portable lifting frame device for motorcycles as claimed in claim 2, wherein the surfaces of said first bearing and said second bearing are wrapped with a layer of heat-shrinkable rubber sleeve.

4. The multifunctional portable rack device for motorcycles as claimed in claim 1, wherein said supporting mechanism comprises a shaft rod and a ring-shaped connecting member, said ring-shaped connecting member comprises a locking screw and a ring-shaped member disposed on said locking screw, said locking screw is disposed on the head portion of said top stick and is in threaded connection with said top stick, said ring-shaped member is sleeved on said shaft rod.

5. The multifunctional portable rack lifting device for motorcycles as claimed in claim 1, wherein said supporting mechanism is an L-shaped coupling member, said L-shaped coupling member comprises a locking screw and an L-shaped supporting seat disposed on said locking screw, said locking screw is disposed on the head of said top stick and is in threaded connection with said top stick, said L-shaped supporting seat comprises a horizontal plate and a vertical plate disposed perpendicular to each other, said horizontal plate is fixedly connected to said locking screw, and said vertical plate is disposed with a U-shaped groove.

6. A multifunctional portable frame lifting device for motorcycles as claimed in any one of claims 1 to 5, wherein said lifting nut comprises a rotary nut and a collar, said rotary nut is sleeved on the lifting screw and connected with the lifting screw by the screw, said collar is arranged on the side of the rotary nut; the pulling mechanism comprises a rod body and a limiting ring, the limiting ring is arranged on one side of the rod body, the rod body is inserted into the sleeve ring in a penetrating mode, and the pulling mechanism is used for twisting the starting nut to move up and down on the starting screw rod.

7. The multifunctional portable motorcycle lifting frame device according to any one of claims 1 to 5, wherein the lifting nut is a rotating nut which is sleeved on the lifting screw and is connected with the lifting screw through a screw; the pulling mechanism is a wrench, the wrench is matched with the rotating nut, and the pulling mechanism is used for twisting the lifting nut to move up and down on the lifting screw rod.

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