Lifting machine

Abstract

The utility model discloses a lifting machine, which relates to the technical field of lifting devices and comprises a supporting seat, a supporting rod, a lifting mechanism and a locking mechanism. The supporting rod is mounted at the top of the supporting seat, an inlet is formed in the top of the supporting rod, and an opening is formed in the supporting rod; the lifting mechanism is arranged at the top of the supporting rod and comprises a lifting rod, a shell and an input shaft, the shell is arranged at the top of the supporting rod, and the input shaft penetrates through the shell; the lifting rod penetrates through the shell and is in transmission connection with the input shaft through a transmission piece. The locking mechanism comprises a sliding ring and a locking assembly arranged on the sliding ring, a limiting block is arranged at the bottom end of the lifting rod, the limiting block is connected with the sliding ring, a locking structure is further arranged on the peripheral side of the supporting rod, and the locking structure comprises a plurality of locking grooves formed in the supporting rod in the vertical direction at intervals; a spring bolt capable of stretching into or out of any locking groove is arranged on the side, facing the locking grooves, of the locking assembly. The lifting machine disclosed by the utility model is better in durability.

Description

TECHNICAL FIELD

[0001] The utility model relates to lifting device technical field, especially lift machine. BACKGROUND

[0002] The lifting machine is used for lifting the supporting piece in daily life, such as in the vehicle maintenance process, adopts the lifting machine and lifts the vehicle to a certain height, so as to carry out the maintenance operation.For the lifting machine of current, one kind is screw rod lifting machine, it is through lifting rod and input shaft and is connected through transmission part, drives lifting rod to go up and down through rotating input shaft, thereby the supporting piece to be lifted to a certain height, but due to the weight of vehicle is larger, and the pressure from the supporting piece to be lifted that lifting rod bears mainly distributes in the position of the mutual connection of transmission part and lifting rod, is easy to cause transmission part damage, thereby influence the fluency of lifting piece lifting or cause lifting rod unexpected instability and drop, and the durability and safety are poor. SUMMARY

[0003] The utility model discloses a lifting machine, which aims to solve the technical problem of poor durability and safety of the existing lifting machine.

[0004] To achieve the above object, the utility model provides a lifting machine, which comprises:

[0005] A support seat is provided with a walking mechanism.

[0006] A support rod is hollow, and is installed on the top of the support seat.

[0007] A lifting mechanism is arranged on the top of the support rod, and comprises a lifting rod, a shell and an input shaft. The input shaft is arranged in the shell in a horizontal direction. The bottom end of the lifting rod can extend into the inner cavity from the entrance, and the top end of the lifting rod is used for supporting the supporting piece. The input shaft is used for driving the lifting rod to ascend and descend relative to the shell through the transmission part when rotating around the axial direction.

[0008] The locking mechanism comprises a sliding ring and a locking assembly arranged on the sliding ring. A limiting block is arranged at the bottom end of the lifting rod corresponding to the opening. The limiting block extends out of the opening from the inner cavity and is connected with the sliding ring. When the lifting rod is lifted relative to the shell, the limiting block and the sliding ring are lifted along the opening. A locking structure is further arranged on the outer circumferential side of the supporting rod and away from the opening. The locking structure comprises a plurality of locking grooves arranged on the supporting rod in vertical direction. The locking assembly is arranged on the side of the locking grooves and is provided with a locking tongue capable of extending into or out of any of the locking grooves, so as to correspondingly lock or unlock the sliding ring on the supporting rod.

[0009] In an embodiment, the locking assembly comprises a sliding block and a wrench. The sliding ring is provided with a sliding channel corresponding to the position of the locking grooves. The sliding channel extends from the outer circumferential side of the sliding ring to the inner circumferential side of the sliding ring in horizontal direction. The sliding block is slidingly connected in the sliding channel. The end of the sliding block away from the wrench forms the locking tongue. The wrench is rotationally connected to the outer circumferential side of the sliding ring and corresponds to the position of the sliding channel. The wrench is used to rotate to drive the sliding block to slide in the sliding channel in horizontal direction, so that the locking tongue extends into or out of any of the locking grooves.

[0010] In an embodiment, a connecting seat is arranged on the outer circumferential side of the sliding ring and corresponds to the position of the sliding channel. The connecting seat is provided with a rotating shaft.

[0011] The wrench comprises a handle and a cam connected with each other. The cam is rotationally arranged on the rotating shaft. When the handle is downwardly pulled, the cam is driven to rotate around the rotating shaft, so that the cam abuts against the sliding block and drives the sliding block to slide in the sliding channel towards the locking grooves until the locking tongue extends into the locking grooves.

[0012] In an embodiment, the inner wall of the sliding channel is provided with a mounting groove extending in horizontal direction from the outer circumferential side of the sliding ring to the inner circumferential side of the sliding ring. Each mounting groove is provided with an elastic member. One end of the elastic member abuts against the side wall of the mounting groove away from the wrench. The other end of the elastic member abuts against the sliding block. When the handle is upwardly pulled, the elastic member pushes the sliding block to slide in the sliding channel away from the locking grooves until the locking tongue extends out of the locking grooves.

[0013] In an embodiment, a plurality of locking protrusions are arranged on the outer circumferential side of the supporting rod and away from the opening. The plurality of locking protrusions are uniformly arranged in vertical direction. Any two adjacent locking protrusions form a locking groove. The top surface of each locking protrusion and the bottom surface of the locking tongue are parallel planes.

[0014] In an embodiment, two openings are formed on the support rod, and the two openings are oppositely arranged, and the bottom end of the lifting rod is provided with a limiting block corresponding to the position of the two openings, respectively.

[0015] The number of the locking mechanisms is two, and the two locking mechanisms are oppositely arranged, and the support rod is provided with a locking structure corresponding to each locking mechanism.

[0016] In an embodiment, an installation space is formed in the shell, the lifting rod penetrates the installation space in the vertical direction, the input shaft penetrates the installation space in the horizontal direction, and the two ends of the input shaft are connected with the shell through bearings, respectively, the lifting rod is a lead screw, the transmission member is a worm gear, and the worm gear is located in the installation space.

[0017] The input shaft comprises a transmission section located in the installation space, the transmission section is threadedly matched with the worm gear, and the worm gear is sleeved on the outside of the lifting rod and is threadedly connected with the lifting rod.

[0018] In an embodiment, the opposite ends of the input shaft in the horizontal direction are a first input end and a second input end, respectively, the first input end and the second input end both extend out of the installation space, the first input end is provided with a hand wheel, and the hand wheel is used to drive the input shaft to rotate when the hand wheel rotates.

[0019] The second input end is provided with a connecting head used to be connected with an external driving member.

[0020] In an embodiment, the top end of the lifting rod is provided with a support disc used to support the to-be-supported member.

[0021] In an embodiment, the support rod is further provided with a handle, and the handle is located below the lifting mechanism.

[0022] The walking mechanism comprises two walking wheels, and the two walking wheels are connected to one side of the support seat through a connecting shaft.

[0023] The lifting machine of the utility model, through setting the supporting rod on the supporting seat, it is favorable to the vertical stability of the supporting rod, the lifting mechanism includes lifting rod, shell and input shaft, the input shaft is placed along the horizontal direction, the lifting rod is vertically arranged for lifting the external supporting part, through rotating the input shaft, the lifting rod can be driven to lift, the transmission efficiency is high and easy to operate, wherein, through setting the locking mechanism, the bottom end of the lifting rod can be inserted into the inner cavity from the inlet, and the opening is arranged on the supporting rod, the bottom of the lifting rod is provided with the limiting block, the limiting block is inserted into the opening and is connected with the slip ring outside the supporting rod, when the lifting rod lifts, the slip ring can be lifted on the supporting rod, the locking assembly is arranged on the slip ring, the locking assembly includes the lock tongue, and the locking groove is arranged outside the supporting rod, through inserting the lock tongue into the locking groove, the relative stability of the slip ring relative to the supporting rod can be realized, and the relative stability between the lifting rod and the supporting rod is realized, and the lock tongue and the locking groove can further share the pressure borne by the lifting rod, avoid the pressure concentration in the lifting mechanism, reduce the risk of damage of the transmission part, better durability, and the lifting rod can be prevented from accidental falling, and the safety of use is improved.

[0024] And through inserting the lock tongue into the locking groove, the slip ring is unlocked from the supporting rod, the height of the lifting rod is adjusted conveniently, and the operation is very flexible. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to the structure shown in the drawings without the creative labor for the ordinary skilled in the art.

[0026] Figure 1 It is the front view schematic diagram of the lifting machine of an embodiment of the utility model;

[0027] Figure 2 It is the side view schematic diagram of the lifting machine of an embodiment of the utility model;

[0028] Figure 3 It is the partial structure section view schematic diagram of the lifting machine of an embodiment of the utility model;

[0029] Figure 4 It is Figure 3 The enlarged view of A in the figure;

[0030] Figure 5 The section view schematic diagram of the lifting machine of an embodiment of the utility model is provided.

[0031] EXPLANATION OF DRAWINGS:

[0032] 100, lifting machine; 1, support seat; 11, walking mechanism; 111, walking wheel; 112, connecting shaft; 2, support rod; 21, inner cavity; 22, opening; 23, locking structure; 231, locking groove; 232, locking protrusion; 24, handle; 3, lifting mechanism; 31, lifting rod; 311, limiting block; 32, shell; 33, input shaft; 34, hand wheel; 35, connecting head; 36, support disc; 4, locking mechanism; 41, sliding ring; 411, sliding channel; 4111, mounting groove; 4112, elastic piece; 4113, guide column; 412, connecting seat; 413, rotating shaft; 42, locking assembly; 421, sliding block; 422, wrench; 4221, handle; 4222, cam; 423, locking tongue.

[0033] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0035] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0036] In addition, if the embodiments of the present application involve descriptions of "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In addition, "and / or" or "and / or" appearing throughout the text means that the three parallel solutions are included, for example, "A and / or B" includes A solution, or B solution, or A and B solutions. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist and is not within the scope of protection required by the present application.

[0037] The present application provides a lifting machine 100.

[0038] Referring to Figures 1-5 In an embodiment of the utility model, the lifting machine 100 includes support seat 1, support rod 2, lifting mechanism 3 and locking mechanism 4, support seat 1 is provided with travelling mechanism 11, support rod 2 is hollow, support rod 2 is installed on the top of support seat 1, the top of support rod 2 is provided with the entrance that communicates with its inner chamber 21, the opening 22 that is communicated with inner chamber 21 is set up on support rod 2, and opening 22 extends along the vertical direction, lifting mechanism 3 is set up on the top of support rod 2, lifting mechanism 3 includes lifting rod 31, shell 32 and input shaft 33, shell 32 is set up on the top of support rod 2, and input shaft 33 is along the horizontal direction and is arranged in shell 32, lifting rod 31 is along the vertical direction and is penetrated through shell 32 and is drivenly connected with input shaft 33 through transmission part, and the bottom end of lifting rod 31 can be from the entrance and is stretched into inner chamber 21, and the top end of lifting rod 31 is used to support the support piece to be supported, input shaft 33 is used to drive lifting rod 31 to lift relative to shell 32 through transmission part when rotating around its axial direction, locking mechanism 4, locking mechanism 4 includes sliding ring 41 and locking assembly 42 that is set up on sliding ring 41, the bottom end of lifting rod 31 is correspondingly provided with limiting block 311 of opening 22, and limiting block 311 is from inner chamber 21 and is stretched out of opening 22 and is connected with sliding ring 41, lifting rod 31 drives limiting block 311 and sliding ring 41 to lift along opening 22 when lifting relative to shell 32, and locking structure 23 is also set up on the position of the outer circumferential side of support rod 2 and avoids opening 22, locking structure 23 includes a plurality of locking grooves 231 that are set up on support rod 2 and are spaced apart along the vertical direction, and locking assembly 42 is provided with lock tongue 423 that can be stretched into or stretched out of any locking groove 231 on the side towards locking groove 231, to correspond to lock sliding ring 41 or unlock on support rod 2.

[0039] The lifting machine 100 of the utility model, through setting up the support rod 2 on the support base 1, it is favorable to the support rod 2 to keep vertical stability, the lifting mechanism 3 includes lifting rod 31, shell 32 and input shaft 33, input shaft 33 is placed along the horizontal direction, lifting rod 31 is vertically set for lifting the external support piece, by rotating input shaft 33, lifting rod 31 can be driven to lift, and transmission efficiency is high and easy to operate, wherein, by setting locking mechanism 4, the bottom end of lifting rod 31 can be inserted into inner cavity 21 from the inlet, and opening 22 is set up on support rod 2, the bottom of lifting rod 31 is provided with limit block 311, limit block 311 is stretched out from opening 22 and is connected with the slip ring 41 outside support rod 2, when lifting rod 31 lifts, it can drive slip ring 41 to lift on support rod 2, locking assembly 42 is set up on slip ring 41, locking assembly 42 includes lock tongue 423, and locking groove 231 is set up outside support rod 2, by inserting lock tongue 423 into locking groove 231, it can keep relative stability of slip ring 41 relative to support rod 2, and the relative stability between lifting rod 31 and support rod 2 is realized, and lock tongue 423 and locking groove 231 can further share the pressure borne by lifting rod 31 from the support piece, avoid the pressure concentration on the transmission part, reduce the risk of transmission part damage, better durability, and can prevent lifting rod 31 from accidental drop, improve the security of use.

[0040] And by inserting lock tongue 423 into locking groove 231, slip ring 41 is unlocked from support rod 2, the height of lifting rod 31 is adjusted conveniently, and the operation is very flexible.

[0041] Wherein, by setting walking mechanism 11 on support base 1, it is convenient to move the lifting machine 100, and the position of the lifting machine 100 is more flexible and convenient to transfer.

[0042] It should be noted that, since the precision requirement of height during lifting is lower, when lifting rod 31 moves to a certain height, the height of lifting rod 31 is adjusted, so that lock tongue 423 can be accurately inserted into one of locking grooves 231, thereby being locked.

[0043] Please continue to read Figure 3 And Figure 4In an embodiment, the locking assembly 42 comprises a sliding block 421 and a wrench 422, the sliding ring 41 is provided with a sliding channel 411 corresponding to the position of the locking groove 231, the sliding channel 411 extends from the outer circumferential side of the sliding ring 41 to the inner circumferential side of the sliding ring 41 in the horizontal direction, the sliding block 421 is slidingly connected in the sliding channel 411, and the end of the sliding block 421 away from the wrench 422 is formed with a locking tongue 423, and the wrench 422 is rotationally connected to the outer circumferential side of the sliding ring 41 and corresponds to the position of the sliding channel 411, and the wrench 422 is used to rotate to drive the sliding block 421 to slide in the sliding channel 411 in the horizontal direction, so that the locking tongue 423 extends into or out of any locking groove 231.

[0044] It can be understood that the sliding block 421 is driven to slide in the sliding channel 411 in the horizontal direction by rotating the wrench 422, so that the locking tongue 423 extends into or out of the locking groove 231, and this design not only simplifies the locking and unlocking process, but also enables the operator to conveniently and quickly adjust without the need for complex tools or steps.

[0045] In an embodiment, the outer circumferential side of the sliding ring 41 and the position corresponding to the sliding channel 411 are provided with a connecting seat 412, and the connecting seat 412 is provided with a rotating shaft 413; the wrench 422 comprises a handle 4221 and a cam 4222 connected to each other, the cam 4222 is rotationally sleeved on the rotating shaft 413, and the handle 4221 can drive the cam 4222 to rotate around the rotating shaft 413 when it is pulled downward, so that the cam 4222 abuts against the sliding block 421 and drives the sliding block 421 to slide in the sliding channel 411 towards the locking groove 231 to make the locking tongue 423 extend into the locking groove 231.

[0046] It can be understood that the design of the cam 4222 enables different positions of the cam 4222 to abut against the sliding block 421 when the handle 4221 is pulled downward, so that the sliding block 421 slides in the sliding channel 411, and the operator only needs to pull the handle 4221 downward to push the locking tongue 423 into the locking groove 231, which is simple and efficient.

[0047] The cam 4222 can adopt the cam 4222 in the prior art, and the distance between the outer circumferential side of the cam 4222 and the rotating shaft 413 is different at different positions.

[0048] Please continue to refer to Figure 4In an embodiment, the inner wall of the sliding channel 411 is provided with a mounting groove 4111 extending horizontally from the outer circumferential side of the sliding ring 41 to the inner circumferential side of the sliding ring 41, and an elastic member 4112 is arranged in each mounting groove 4111. One end of the elastic member 4112 abuts against the side wall of the mounting groove 4111 away from the wrench 422, and the other end of the elastic member 4112 abuts against the sliding block 421. The elastic member 4112 is used to push the sliding block 421 to slide in the sliding channel 411 away from the locking slot 231 when the handle 4221 is pulled upward, so that the locking tongue 423 is withdrawn from the locking slot 231.

[0049] Understandably, the elastic member 4112 is compressed when the cam 4222 pushes the sliding block 421 to slide towards the locking slot 231. The elastic member 4112 enables the sliding block 421 to move in the direction away from the locking slot 231 automatically by the elastic restoring force of the elastic member 4112 when the handle 4221 is pulled upward, so that the locking tongue 423 is withdrawn from the locking slot 231, thereby achieving automatic resetting of the sliding block 421, which is simple and reliable.

[0050] Further, the elastic member 4112 is a compression spring, and a guide column 4113 is further arranged in the sliding groove. One end of the guide column 4113 is connected to the side wall of the mounting groove 4111 away from the wrench 422, and a guide hole is arranged on the sliding block 421 corresponding to the position of the guide column 4113. The guide column 4113 extends into the guide hole and is in sliding cooperation with the guide hole, and the elastic member 4112 is sleeved outside the guide column 4113.

[0051] By arranging the guide column 4113, the sliding process of the sliding block 421 in the sliding channel 411 is more stable, which also helps to keep the correct position of the spring, prevent it from bending or deviating during use, and ensure that the spring can recover smoothly after each compression, improve the working efficiency and service life of the spring, and reduce the maintenance frequency.

[0052] In an embodiment, a plurality of locking protrusions 232 are arranged on the outer circumferential side of the support rod 2 and away from the opening 22. The plurality of locking protrusions 232 are uniformly arranged vertically, and a locking slot 231 is formed between any two adjacent locking protrusions 232. The top surface of each locking protrusion 232 and the bottom surface of the locking tongue 423 are mutually parallel planes.

[0053] Understandably, the design of the locking protrusion 232 makes the structure between the locking slots 231 more solid and capable of bearing greater pressure and impact force. Since the top surface of each locking protrusion 232 and the bottom surface of the locking tongue 423 are mutually parallel planes, it ensures that the locking tongue 423 can provide stable support and smooth contact when entering the locking slot 231, thereby enhancing the stability and safety in the locked state.

[0054] Please refer to Figure 5 In an embodiment, two openings 22 are formed on the support rod 2, and the two openings 22 are oppositely arranged. The bottom end of the lifting rod 31 is provided with a limiting block 311 corresponding to the position of the two openings 22. The number of the locking mechanisms 4 is two, and the two locking mechanisms 4 are oppositely arranged. The support rod 2 is provided with a locking structure 23 corresponding to each locking mechanism 4.

[0055] It can be understood that by forming two oppositely arranged openings 22 on the support rod 2 and respectively arranging the limiting blocks 311 at the corresponding positions of the bottom end of the lifting rod 31, balanced support can be provided to the lifting rod 31 on both sides. The two oppositely arranged locking mechanisms 4 and the corresponding locking structures 23 can more evenly distribute the load pressure applied to the support rod 2, and the durability is better.

[0056] In an embodiment, an installation space (not shown in the figure) is formed in the shell 32. The lifting rod 31 penetrates the installation space vertically, and the input shaft 33 penetrates the installation space horizontally. The two ends of the input shaft 33 are connected to the shell 32 through bearings, respectively. The lifting rod 31 is a lead screw, the transmission member (not shown in the figure) is a worm gear, and the worm gear is located in the installation space. The input shaft 33 includes a transmission section located in the installation space. The transmission section is threadedly connected with the worm gear. The worm gear is sleeved on the outside of the lifting rod 31 and is threadedly connected with the lifting rod 31.

[0057] It can be understood that by using the worm gear as the transmission member, and threadedly connecting the transmission section of the input shaft 33 with the worm gear, and sleeving the worm gear on the outside of the lifting rod 31 and threadedly connecting it with the lifting rod 31, this design can provide efficient and accurate force transmission. The thread connection between the worm gear and the lead screw enables small-amplitude rotational input to be converted into linear motion with a larger stroke, thereby improving the working efficiency and position control accuracy of the entire lifting mechanism 3.

[0058] In addition, the limiting block 311 at the bottom of the lifting rod 31 can further limit the rotation of the lifting rod 31, so that the lifting rod 31 can be quickly lifted and lowered by rotating the worm gear.

[0059] It should be noted that the transmission section of the input rod can be regarded as a worm. The transmission cooperation between the worm and the worm gear can be achieved by using existing technologies. The transmission between the worm gear and the lead screw can also be achieved by using existing technologies, and thus no further description is given here.

[0060] It can be understood that the worm, the lead screw, and the worm gear are all connected by threads. In this embodiment, by arranging the locking mechanism, the pressure of the to-be-supported member can be shared to avoid the risk of deformation of the threads on the worm, the lead screw, and the worm gear due to excessive pressure, and the reliability and safety are better.

[0061] Please continue to refer to Figure 1 and Figure 2In an embodiment, the input shaft 33 has a first input end and a second input end at opposite ends in a horizontal direction, and the first input end and the second input end both extend out of the mounting space, the first input end is provided with a hand wheel 34, and the hand wheel 34 is used to drive the input shaft 33 to rotate when rotating; and the second input end is provided with a connecting head 35 used to be connected with an external driving member.

[0062] It can be understood that, by arranging the hand wheel 34 and the connecting head 35 at the two ends of the input shaft 33, two operation modes of manual and automatic are realized. The input shaft 33 is driven to rotate by manually rotating the hand wheel 34, so that manual operation is realized, and various fine adjustment operations are facilitated; and the connecting head 35 is connected with an external driving member, such as a driving motor, so that the lifting rod 31 is quickly driven to ascend and descend. This design provides greater flexibility, and the most suitable working mode can be selected according to actual conditions.

[0063] In an embodiment, the top end of the lifting rod 31 is provided with a support disc 36 used to support a to-be-supported member.

[0064] It can be understood that, the support disc 36 increases the contact area between the to-be-supported member (such as a vehicle chassis), so as to disperse the pressure applied to the to-be-supported member, and also improves the support stability, and avoids damage to the to-be-supported member.

[0065] In an embodiment, the support rod 2 is further provided with a handle 24, and the handle 24 is located below the lifting mechanism 3; and the traveling mechanism 11 includes two traveling wheels 111 connected to one side of the support base 1 through a connecting shaft 112.

[0066] By arranging the handle 24, an operator can hold the handle 24 during the movement of the lifting machine 100, so as to increase convenience, and by arranging the two traveling wheels 111 on one side of the support base 1, the support base 1 can be stably placed on the ground during the use of the lifting machine 100, so as to avoid the sliding of the support base 1 relative to the ground, and during the movement of the lifting machine 100, the lifting machine 100 is inclined at a certain angle relative to the traveling wheels 111 by holding the handle 24, so as to drag the lifting machine 100, and the portability is increased.

[0067] The above only describes exemplary embodiments of the present application, and does not limit the patent scope of the present application, and any equivalent structural transformation made by using the content of the present application specification and drawings, or direct / indirect application in other related technical fields is included in the patent protection scope of the present application.

Claims

1. A lifting machine, characterized in that, include: Support base, wherein the support base is provided with a walking mechanism; A support rod, which is hollow, is installed on the top of the support base. The top of the support rod has an inlet communicating with its inner cavity, and the support rod has an opening communicating with the inner cavity, and the opening extends vertically. A lifting mechanism is disposed at the top of the support rod. The lifting mechanism includes a lifting rod, a housing, and an input shaft. The housing is disposed at the top of the support rod, and the input shaft passes through the housing horizontally. The lifting rod passes vertically through the housing and is connected to the input shaft via a transmission component. The bottom end of the lifting rod can extend into the inner cavity from the inlet, and the top end of the lifting rod is used to support the component to be supported. The input shaft is used to drive the lifting rod to move up and down relative to the housing via the transmission component when rotating about its axial direction. A locking mechanism is provided, comprising a slip ring and a locking assembly disposed on the slip ring. A limit block is provided at the bottom end of the lifting rod corresponding to the opening, and the limit block extends out of the opening from the inner cavity and is connected to the slip ring. When the lifting rod moves up and down relative to the outer shell, it drives the limit block and the slip ring to move up and down along the opening. A locking structure is also provided on the outer periphery of the support rod, away from the opening. The locking structure includes a plurality of locking grooves that are vertically spaced on the support rod. The locking assembly is provided with a locking tongue on the side facing the locking groove that can extend into or out of any of the locking grooves, so as to lock or unlock the slip ring from the support rod.

2. The lift as described in claim 1, characterized in that, The locking assembly includes a slider and a wrench. The slip ring has a sliding channel corresponding to the position of the locking groove. The sliding channel extends horizontally from the outer periphery of the slip ring to the inner periphery of the slip ring. The slider is slidably connected in the sliding channel, and the end of the slider away from the wrench forms the locking tongue. The wrench is rotatably connected to the outer periphery of the slip ring and corresponds to the position of the sliding channel. The wrench is used to rotate to drive the slider to slide horizontally in the sliding channel, so that the locking tongue extends into or out of any of the locking grooves.

3. The lift as described in claim 2, characterized in that, A connecting seat is provided on the outer periphery of the slip ring and at the position corresponding to the sliding channel, and a rotating shaft is provided on the connecting seat; The wrench includes a handle and a cam connected to each other. The cam is rotatably mounted on the rotating shaft. When the handle is pulled down, it can drive the cam to rotate around the rotating shaft, so that the cam abuts against the slider and drives the slider to slide toward the locking groove in the sliding channel until the locking tongue extends into the locking groove.

4. The lift as described in claim 3, characterized in that, The inner wall of the sliding channel is provided with a mounting groove, and the mounting groove extends horizontally from the outer periphery of the slip ring toward the inner periphery of the slip ring. Each mounting groove is provided with an elastic element. One end of the elastic element abuts against the side wall of the mounting groove away from the wrench, and the other end of the elastic element abuts against the slider. The elastic element is used to push the slider in the sliding channel away from the locking groove when the wrench is pulled upward until the locking tongue extends out of the locking groove.

5. The lift as described in claim 4, characterized in that, Multiple locking protrusions are provided on the outer periphery of the support rod, away from the opening. The multiple locking protrusions are evenly spaced vertically, and a locking groove is formed between any two adjacent locking protrusions. The top surface of each locking protrusion and the bottom surface of the locking tongue are parallel planes to each other.

6. The lift as described in any one of claims 1 to 5, characterized in that, The support rod has two openings, which are arranged opposite to each other, and a limiting block is provided at the bottom of the lifting rod corresponding to the positions of the two openings respectively; The number of locking mechanisms is two, and the two locking mechanisms are arranged opposite to each other. Each locking mechanism is provided with a locking structure on the support rod.

7. The lift as described in any one of claims 1 to 5, characterized in that, An installation space is formed inside the housing. The lifting rod extends vertically through the installation space. The input shaft extends horizontally through the installation space, and both ends of the input shaft are connected to the housing via bearings. The lifting rod is a lead screw, and the transmission component is a worm gear, which is located within the installation space. The input shaft includes a transmission section located within the installation space, the transmission section being threadedly engaged with the worm gear, the worm gear being sleeved outside the lifting rod and threadedly connected to the lifting rod.

8. The lift as described in claim 7, characterized in that, The two opposite ends of the input shaft along the horizontal direction are a first input end and a second input end, both of which extend out of the mounting space. The first input end is provided with a handwheel, which is used to drive the input shaft to rotate when rotated. The second input terminal is provided with a connector for connecting to an external driving device.

9. The lift as described in any one of claims 1 to 5, characterized in that, The top of the lifting rod is provided with a support plate for supporting the component to be supported.

10. The lift as described in any one of claims 1 to 5, characterized in that, The support rod is also provided with a handle, and the handle is located below the lifting mechanism; The walking mechanism includes two walking wheels, which are connected to one side of the support base via a connecting shaft.

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