Jacking device capable of being finely adjusted up and down

Abstract

The utility model belongs to the technical field of jacking devices, and particularly relates to a jacking device capable of being finely adjusted up and down, which comprises a fixed part and a lifting part, the fixed part comprises a base and a guide rod arranged on the base, and the lifting part is provided with a lifting plate, a climbing mechanism and an adjusting grip for controlling the climbing mechanism. The adjusting grip is pressed to drive the climbing mechanism so as to control the lifting part and the lifting plate to move upwards along the guide rod, the lifting part is further provided with a locking mechanism clamped with the guide rod, the locking mechanism limits the lifting part to move downwards, the lifting plate is arranged on the lifting part in a sliding mode, and an adjusting mechanism is arranged between the lifting part and the lifting plate. The lifting plate can be controlled to move up and down relative to the lifting part by driving the adjusting mechanism, so that downward or upward fine adjustment of the lifting part by the lifting plate is realized, and the jacking device can select fine adjustment of the ascending distance or the descending distance of an object according to actual requirements of a user; and therefore, the user can accurately and finely adjust the lifting height of the article conveniently, and the user can conveniently use the lifting device to work.

Description

Technical Field

[0001] The utility model belongs to the technical field of jacking devices, in particular to a jacking device which can be fine-tuned up and down. Background Art

[0002] When renovating a building indoors or outdoors, it's often necessary to lift objects like security doors and wall tiles to a certain height before securing them. Currently, a variety of lifters are available on the market to help secure objects during installation, making the installation of security doors, wall tiles, and other items more convenient and accurate.

[0003] The Chinese patent with patent number CN202322485531.1 provides a fine-adjustable lifting device, including a fixing part and a lifting part arranged on the fixing part, the fixing part includes a base and a guide rod arranged on the base, the lifting part is provided with a lifting plate, a climbing mechanism and an adjusting handle for controlling the climbing mechanism, the lifting part is also provided with a locking mechanism engaged with the guide rod, a fine-tuning piece is provided on the locking mechanism, one end of the fine-tuning piece is abutted against the lifting part, and the other end of the fine-tuning piece is hingedly provided with an adjusting piece, and the adjusting piece is provided with an adjusting rod abutting against the upper surface of the locking mechanism; the above-mentioned lifting device can only realize the downward fine-tuning of the lifting height of the article in one direction by pressing the adjusting piece, and the function is single. When the lifting height of the article is slightly lower than the actual required height, the user needs to press the adjusting handle again to move the article upward for a distance, and then press the adjusting piece to realize the downward fine-tuning of the article, so that after the lifting height of the article reaches the corresponding position, the operation steps are numerous, which is not conducive to user use. Summary of the Invention

[0004] The purpose of the utility model is to provide a lifter with a simple structure, which can fine-tune the rising distance or the falling distance of the object according to the actual needs of the user, so that the user can accurately fine-tune the lifting height of the object, which is beneficial for the user to use the lifter.

[0005] The purpose of this utility model is achieved in this way:

[0006] The lifting device can be fine-tuned up and down, including a fixed part and a lifting part arranged on the fixed part, the fixed part including a base and a guide rod arranged on the base, the lifting part is provided with a lifting plate, a climbing mechanism and an adjusting handle for controlling the climbing mechanism, pressing the adjusting handle drives the climbing mechanism to control the lifting part and the lifting plate to move upward along the guide rod, the lifting part is also provided with a locking mechanism engaged with the guide rod, the locking mechanism limits the lifting part from moving downward, the lifting plate is slidably arranged on the lifting part, and an adjusting mechanism is provided between the lifting part and the lifting plate, driving the adjusting mechanism can control the lifting plate to move up and down relative to the lifting part, thereby realizing fine-tuning of the lifting plate relative to the lifting part downward or upward.

[0007] Furthermore, the adjustment mechanism includes a threaded rod and a drive assembly, the lifting plate is threadedly connected to the threaded rod, and when the drive assembly drives the threaded rod to rotate forward or reverse, the lifting plate threadedly connected to the threaded rod will move up and down along the threaded rod.

[0008] Furthermore, a connecting portion is provided on the lifting plate, a threaded hole is provided on the connecting portion, and the threaded rod is arranged in the threaded hole and is threadedly connected to the connecting portion.

[0009] Furthermore, the driving assembly includes a connecting bevel gear, a driving bevel gear and a driving rod arranged on the driving bevel gear. The connecting bevel gear is arranged on the threaded rod. The driving bevel gear and the connecting bevel gear are engaged with each other. Driving the driving rod to rotate can drive the driving bevel gear to rotate. The rotation of the driving bevel gear drives the connecting bevel gear and the threaded rod to rotate synchronously, so that the lifting plate can move up and down along the threaded rod.

[0010] Furthermore, the driving assembly also includes a driven gear and a driving gear rotatably arranged on the lifting part, the two ends of the driving rod are respectively connected to the driven gear and the driving bevel gear, the driving gear is meshed with the driven gear, and the driving gear is connected to a driving member.

[0011] Furthermore, a fixing hole is provided on the lifting part, a driving hole is provided on the driving gear, a rotating rod is provided in the driving hole and the fixing hole, a connecting hole is provided at the inner end of the driving member, a gear hole is provided on the driving gear, and a fixing rod is provided in the gear hole and the connecting hole.

[0012] Furthermore, a limiting hole is provided on the lifting part, a limiting sleeve is installed in the limiting hole, the driving rod is arranged in the limiting sleeve, a dust cover is provided on one side of the lifting part, a transmission space is formed between the dust cover and the limiting sleeve, the driven gear and the driving gear are arranged in the transmission space, a rotating hole corresponding to the position of the driving gear is provided on the dust cover, and the inner end of the driving member is arranged in the rotating hole.

[0013] Furthermore, a mounting hole is provided on the lifting portion, an adjusting slide is provided on the lifting plate, and a mounting rod is provided in the mounting hole and the adjusting slide.

[0014] Furthermore, a mounting block is provided at the bottom of the lifting part, and the mounting block is fixedly connected to the lifting part. An installation space is formed in the lifting part. A mounting part is provided in the middle of the mounting block, and the mounting part is located in the installation space. A lower bearing is provided in the mounting part, and a bearing groove is provided at the top of the installation space. An upper bearing is provided in the bearing groove. The threaded rod is arranged in the installation space, and an upper rotating part and a lower rotating part are respectively provided at the upper and lower ends of the threaded rod. The upper rotating part is connected to the upper bearing, and the lower rotating part is connected to the lower upper bearing.

[0015] Furthermore, the lifting part is provided with a climbing space, the climbing mechanism is arranged in the climbing space, the lifting part is sleeved on the guide rod, and the guide rod passes through the climbing space, the climbing mechanism includes a climbing spring and a climbing block sleeved on the guide rod, and the two ends of the climbing spring respectively abut against the lower surface of the climbing block and the bottom of the installation space; the lifting part is provided with a fixed handle, the adjusting handle is hinged to the fixed handle, the inner end of the adjusting handle is exposed in the climbing space, the inner end of the adjusting handle abuts against the upper surface of the climbing block, and the top end of the lifting part is provided with a clamping platform, the locking mechanism includes a locking plate sleeved on the guide rod and a locking spring, one end of the locking plate is clamped with the clamping platform, and the two ends of the locking spring respectively abut against the top end of the lifting part and the lower surface of the locking plate.

[0016] Compared with the prior art, the present invention has the following outstanding and beneficial technical effects:

[0017] The lifting device can be fine-tuned up and down, including a fixed part and a lifting part arranged on the fixed part, the fixed part including a base and a guide rod arranged on the base, the lifting part is provided with a lifting plate, a climbing mechanism and an adjusting handle for controlling the climbing mechanism, pressing the adjusting handle drives the climbing mechanism to control the lifting part and the lifting plate to move upward along the guide rod, the lifting part is also provided with a locking mechanism engaged with the guide rod, the locking mechanism limits the lifting part from moving downward, the lifting plate is slidably arranged on the lifting part, and an adjusting mechanism is provided between the lifting part and the lifting plate, driving the adjusting mechanism can control the lifting plate to move up and down relative to the lifting part, thereby realizing the lifting plate When the lifting device is in a state of being lifted or lowered, the lifting plate is moved upward along the guide rod, and the lifting device is moved upward along the guide rod to prevent the lifting device from moving downward or upward, thereby preventing the lifting device from moving downward or upward. Move upward. When the lifting height of the item is slightly higher than the actual required height, the user can control the adjustment mechanism to control the lifting plate to move downward relative to the lifting part, so that the items on the lifting plate can move downward with the lifting part, thereby achieving fine-tuning of the lowering height of the item. When the lifting height of the item is slightly lower than the actual required height, the user can also control the lifting plate to move upward relative to the lifting part through the adjustment mechanism, so that the items on the lifting plate can move upward with the lifting part, thereby achieving fine-tuning of the rising height of the item, so that the user can accurately control the lifting height of the item, compared with the existing lifters on the market that can only achieve downward lifting height of the item. Fine-tuning: This type of lift has a single function. When the user needs to fine-tune the lifting height of the item upwards, it cannot quickly meet the user's needs. A series of steps are required to make the lifting height of the item reach the actual required height. The operation is complicated and not conducive to user use. The lifter of the utility model can control the lifting plate to move upward or downward relative to the lifting part by directly controlling the adjustment mechanism according to the different needs of the user, so that the lifting height of the item on the lifting plate can be fine-tuned upward or downward without the need for unnecessary steps. The operation is simple, fast and convenient, which is conducive to the user using the lifter and enables the user to fine-tune the lifting height of the item more accurately. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional diagram of the present utility model.

[0019] Figure 2 It is a structural diagram of the present utility model.

[0020] Figure 3 It is a structural diagram of the present utility model.

[0021] Figure 4 It is an exploded view of the lifting part and the guide rod of the utility model.

[0022] Figure 5 It is an exploded view of the lifting plate and the lifting part of the utility model.

[0023] Figure 6 It is a structural diagram of the lifting part of the utility model.

[0024] Figure 7 It is a three-dimensional diagram of the lifting plate of the utility model.

[0025] Figure 8 It is an exploded view of the lifting part and the dust cover of the utility model.

[0026] Figure 9 It is an exploded view of the lifting part and the adjusting mechanism of the utility model.

[0027] Figure 10 It is a three-dimensional diagram of the lifting part and the fixed handle of the utility model.

[0028] Figure 11 This is one of the structural diagrams of the threaded rod and the drive assembly of the utility model.

[0029] Figure 12 This is the second structural diagram of the threaded rod and the drive assembly of the utility model.

[0030] Figure 13 It is an exploded view of the threaded rod and the mounting block of the utility model.

[0031] Figure 14 It is an exploded view of the threaded rod, the upper bearing and the lower bearing of the utility model.

[0032] Figure 15 It is an exploded view of the driving member and the active gear of the utility model.

[0033] The meaning of the numbers in the figure:

[0034] 1-lifting part; 2-base; 3-guide rod; 4-lifting plate; 5-climbing mechanism; 6-adjustable handle;

[0035] 7-locking mechanism; 8-adjusting mechanism; 9-threaded rod; 10-connecting part; 11-threaded hole;

[0036] 12-connecting helical gear; 13-driving helical gear; 14-driving rod; 15-driven gear;

[0037] 16- driving gear; 17- driving member; 18- fixing hole; 19- driving hole; 20- rotating rod;

[0038] 21-connecting hole; 22-gear hole; 23-fixing rod; 24-limiting hole; 25-limiting sleeve;

[0039] 26-dust cover; 27-rotation hole; 28-mounting hole; 29-adjustment slot; 30-mounting rod;

[0040] 31-mounting block; 32-mounting space; 33-mounting portion; 34-lower bearing; 35-bearing slot;

[0041] 36-upper bearing; 37-upper rotating part; 38-lower rotating part; 39-climbing space; 40-climbing spring;

[0042] 41-climbing block; 42-fixed grip; 43-clamping platform; 44-locking plate; 45-locking spring. DETAILED DESCRIPTION

[0043] The present invention will be further described below in conjunction with specific embodiments:

[0044] A jacking device that can be fine-tuned up and down, comprising a fixed part and a lifting part 1 arranged on the fixed part, the fixed part comprising a base 2 and a guide rod 3 arranged on the base 2, the lifting part 1 is provided with a lifting plate 4, a climbing mechanism 5 and an adjustment handle 6 for controlling the climbing mechanism 5, pressing the adjustment handle 6 to drive the climbing mechanism 5 to control the lifting part 1 and the lifting plate 4 to move upward along the guide rod 3, the lifting part 1 is also provided with a locking mechanism 7 that is engaged with the guide rod 3, the locking mechanism 7 limits the lifting part 1 from moving downward, the lifting plate 4 is slidably arranged on the lifting part 1, and an adjustment mechanism 8 is provided between the lifting part 1 and the lifting plate 4 to drive The adjusting mechanism 8 can control the lifting plate 4 to move up and down relative to the lifting part 1, thereby realizing fine adjustment of the lifting plate 4 with respect to the lifting part 1 downward or upward; when in use, the user needs to first place the lifting plate 4 on the lifting part 1 under the object to be lifted, and then press the adjusting handle 6 to drive the climbing mechanism 5 to control the lifting part 1 to move upward along the guide rod 3, so that the lifting plate 4 on the lifting part 1 moves upward with the lifting part 1, and then the objects on the lifting plate 4 can be lifted for installation, and the locking mechanism 7 on the lifting part 1 is engaged with the guide rod 3, so that when the lifting part 1 completes the upward movement, the locking mechanism 7 will be engaged with the guide rod 3, thereby limiting the automatic downward movement of the lifting part 1, so that the objects on the lifting plate 4 can be stably The installation is carried out in a fixed manner. Since the adjustment mechanism 8 on the lifting part 1 can control the lifting plate 4 to move downward or upward on the lifting part 1, when the lifting height of the object is slightly higher than the actual required height, the user can control the adjustment mechanism 8 to control the lifting plate 4 to move downward relative to the lifting part 1, so that the object on the lifting plate 4 can move downward together with the lifting part 1, thereby achieving fine adjustment of the lowering height of the object. When the lifting height of the object is slightly lower than the actual required height, the user can also control the lifting plate 4 to move upward relative to the lifting part 1 through the adjustment mechanism 8, so that the object on the lifting plate 4 can move upward together with the lifting part 1, thereby achieving fine adjustment of the rising height of the object, so that the user can accurately control the lifting height of the object. The lifters currently on the market can only achieve downward fine-tuning of the lifting height of items. Such lifters have a single function. When the user needs to fine-tune the lifting height of items upward, it cannot quickly meet the user's needs. A series of steps are required to make the lifting height of the items reach the actual required height. The operation is complicated and not conducive to user use. The lifter of the utility model can control the lifting plate 4 to move upward or downward relative to the lifting part 1 by directly controlling the adjustment mechanism 8 according to the different needs of the user, so that the lifting height of the items on the lifting plate 4 can be fine-tuned upward or downward without the need for unnecessary steps. The operation is simple, fast and convenient, which is conducive to the user using the lifter and enables the user to fine-tune the lifting height of the items more accurately.

[0045] Preferably, the adjusting mechanism 8 includes a threaded rod 9 and a driving assembly, and the lifting plate 4 is threadedly connected to the threaded rod 9. When the driving assembly drives the threaded rod 9 to rotate forward or reverse, the lifting plate 4 threadedly connected to the threaded rod 9 will move up and down along the threaded rod 9; since the lifting plate 4 is threadedly connected to the threaded rod 9, when the user wants to control the lifting plate 4 to move upward or downward relative to the lifting part 1, the user can control the threaded rod 9 to rotate forward or reverse through the driving assembly to make the lifting plate 4 on the threaded rod 9 move up or down along the threaded rod 9, so that the user can smoothly control the fine adjustment of the lifting height of the objects on the lifting plate 4.

[0046] Preferably, the lifting plate 4 is provided with a connecting portion 10, the connecting portion 10 is provided with a threaded hole 11, and the threaded rod 9 is arranged in the threaded hole 11 and is threadedly connected to the connecting portion 10; the threaded rod 9 is threadedly connected to the lifting plate 4 through the threaded hole 11 on the connecting portion 10 of the lifting plate 4, thereby making the threaded connection between the lifting plate 4 and the threaded rod 9 more stable and firm.

[0047] Preferably, the driving assembly includes a linked bevel gear 12, a driving bevel gear 13 and a driving rod 14 provided on the driving bevel gear 13, the linked bevel gear 12 is provided on the threaded rod 9, the driving bevel gear 13 and the linked bevel gear 12 are meshed with each other, driving the driving rod 14 to rotate can drive the driving bevel gear 13 to rotate, the driving bevel gear 13 rotates to drive the linked bevel gear 12 and the threaded rod 9 to rotate synchronously, so that the lifting plate 4 can move up and down along the threaded rod 9; because the driving bevel gear 13 and the linked bevel gear 12 are meshed with each other, and the driving bevel gear 13 is connected to the driving rod 14, when the user wants to fine-tune the lifting distance of the object, the user can rotate the driving rod 14 clockwise, so that the driving rod 14 drives the driving bevel gear 13 to rotate clockwise, and the driving bevel gear 13 drives the linked bevel gear 12 to rotate clockwise, The linked bevel gear 12 is arranged on the threaded rod 9 and is fixedly connected to the threaded rod 9. When the linked bevel gear rotates clockwise, the threaded rod 9 will also rotate clockwise with the linked bevel gear, so that the lifting plate 4 on the threaded rod 9 moves upward through the connecting part 10, completing the fine adjustment of the rising distance of the object. When the user wants to fine-tune the descending distance of the object, the user can rotate the driving rod 14 counterclockwise at this time, so that the driving rod 14 drives the driving bevel gear 13 to rotate counterclockwise, and the driving bevel gear 13 drives the linked bevel gear 12 to rotate counterclockwise. After the linked bevel gear rotates counterclockwise, the threaded rod 9 will also rotate counterclockwise with the linked bevel gear, so that the lifting plate 4 on the threaded rod 9 moves upward through the connecting part 10, completing the fine adjustment of the descending distance of the object. The user can control the threaded rod 9 to rotate clockwise or counterclockwise by controlling the driving rod 14. The operation is simple, fast and convenient.

[0048] Preferably, the driving assembly further comprises a driven gear 15 and a driving gear 16 rotatably arranged on the lifting part 1, the two ends of the driving rod 14 are respectively connected to the driven gear 15 and the driving bevel gear 13, the driving gear 16 is meshed with the driven gear 15, and a driving member 17 is connected to the driving gear 16; the driving member 17 is a common polygonal knob on the market, and the user can rotate it by holding it with his fingers when rotating. Since the driving gear 16 is rotatably arranged on the lifting part 1, and the driving member 17 is connected to the driving gear 16, when the driving member 17 rotates, it can smoothly drive the driving gear 16 to rotate on the lifting part 1, and the rotation of the driving gear 16 can drive the driven gear 15 meshed with the driving gear 16 to rotate together. Since the two ends of the driving rod 14 are respectively connected to the driven gear 15 and the driving bevel gear The wheels 13 are connected. When the driven gear 15 rotates, it will drive the driving rod 14 and the driving bevel gear 13 at one end of the driving rod 14 to rotate together, so that the driving bevel gear 13 can drive the linked bevel gear to rotate, and finally the lifting plate 4 on the threaded rod 9 can move up and down along the threaded rod 9, and the user can control the lifting plate 4 to move up or down by selecting the driving member 17 to rotate clockwise or counterclockwise, and the setting of the driving member 17 enables the user to accurately raise or lower the height of the lifting plate 4 through the driving member 17. Since the driving gear 16 is a large gear and the driving bevel gear 13 is a small gear, when the driving gear 16 rotates one circle, it can drive the driving gear to rotate several circles, so that the user only needs to rotate the driving member 17 at a small angle to control the lifting plate 4 to move up and down, making the movement of the lifting plate 4 faster and more convenient, and convenient for the user to fine-tune.

[0049] Preferably, a fixing hole 18 is provided on the lifting part 1, a driving hole 19 is provided on the driving gear 16, a rotating rod 20 is provided in the driving hole 19 and the fixing hole 18, a connecting hole 21 is provided on the inner end of the driving member 17, a gear hole 22 is provided on the driving gear 16, and a fixing rod 23 is provided in the gear hole 22 and the connecting hole 21; the driving gear 16 is arranged in the fixing hole 18 of the lifting part 1 and the driving hole 19 of the driving gear 16 through the rotating rod 20 and is rotatably arranged on the lifting part 1, and the setting of the rotating rod 20 enables the driving gear 16 to rotate smoothly and will not detach from the lifting part 1, and the driving member 17 is fixedly connected to the driving gear 16 through the connecting hole 21 at the inner end and the fixing rod 23 in the gear hole 22 of the driving gear 16, so that when the user rotates the driving member 17, the driving gear 16 can be smoothly driven to rotate, and the number of the gear hole 22, the connecting hole 21 and the fixing rod 23 are all two, which can make the connection between the driving member 17 and the driving gear 16 more stable and firm.

[0050] Preferably, a limiting hole 24 is provided on the lifting part 1, a limiting sleeve 25 is installed in the limiting hole 24, the driving rod 14 is arranged in the limiting sleeve 25, and a dust cover 26 is provided on one side of the lifting part 1. A transmission space is formed between the dust cover 26 and the limiting sleeve 25, the driven gear 15 and the driving gear 16 are arranged in the transmission space, and a rotating hole 27 corresponding to the position of the driving gear 16 is provided on the dust cover 26, and the inner end of the driving member 17 is arranged in the rotating hole 27; the limiting sleeve 25 is fixedly installed in the limiting hole 24 of the lifting part 1, and the driving rod 14 is arranged in the limiting sleeve 25 and will not contact the inner wall of the limiting hole 24, which can effectively reduce the friction generated when the driving rod 14 rotates, reduce wear, and extend the service life of the driving rod 14, and the setting of the limiting sleeve 25 can prevent the driving rod 14 from moving arbitrarily in the limiting hole 24, so that the user can normally control the lifting plate 4 to fine-tune up and down relative to the lifting part 1 by rotating the driving rod 14.

[0051] Preferably, a mounting hole 28 is provided on the lifting part 1, and an adjusting slot 29 is provided on the lifting plate 4, and a mounting rod 30 is provided in the mounting hole 28 and the adjusting slot 29; since there is a mounting rod 30 in the mounting hole 28 of the lifting part 1 and the adjusting slot 29 of the lifting plate 4, there is no fixed connection between the lifting plate 4 and the lifting part 1. When the threaded rod 9 rotates, the lifting plate 4 can only move up and down along the adjusting slot 29, and when the user wants to increase the distance for fine-tuning the lifting plate 4 upward, the manufacturer can increase the length of the threaded rod 9 and the adjusting slot 29, so that the distance that the lifting plate 4 can move upward is increased.

[0052] Preferably, a mounting block 31 is provided at the bottom of the lifting part 1, and the mounting block 31 is fixedly connected to the lifting part 1. An installation space 32 is formed in the lifting part 1. A mounting portion 33 is provided in the middle of the mounting block 31. The mounting portion 33 is located in the installation space 32. A lower bearing 34 is provided in the mounting portion 33. A bearing groove 35 is provided at the top of the installation space 32. An upper bearing 36 is provided in the bearing groove 35. The threaded rod 9 is arranged in the installation space 32. An upper rotating portion 37 and a lower rotating portion 38 are provided at the upper and lower ends of the threaded rod 9, respectively. The moving part 37 is connected to the upper bearing 36, and the lower rotating part 38 is connected to the lower upper bearing 36; since the mounting block 31 is fixedly connected to the bottom of the lifting part 1, the mounting part 33 in the middle of the mounting block 31 is located in the mounting space 32, and the threaded rod 9 is in the mounting space 32, and the upper rotating part 37 at the top of the threaded rod 9 is connected to the upper bearing 36, and the lower rotating part 38 at the bottom end of the threaded rod 9 is connected to the lower bearing 34, so that the threaded rod 9 can be smoothly rotated and installed in the mounting space 32, so that the driving bevel gear 13 can drive the threaded rod 9 to rotate together through the linked bevel gear 12.

[0053] Preferably, the lifting part 1 is provided with a climbing space 39, the climbing mechanism 5 is arranged in the climbing space 39, the lifting part 1 is sleeved on the guide rod 3, and the guide rod 3 passes through the climbing space 39, the climbing mechanism 5 includes a climbing spring 40 and a climbing block 41 sleeved on the guide rod 3, the two ends of the climbing spring 40 respectively abut against the lower surface of the climbing block 41 and the bottom of the installation space 32, the lifting part 1 is provided with a fixed handle 42, the adjusting handle 6 is hinged to the fixed handle 42, the inner end of the adjusting handle 6 is exposed in the climbing space 39, the inner end of the adjusting handle 6 abuts against the upper surface of the climbing block 41, the top end of the lifting part 1 is provided with a clamping platform 43, the locking mechanism 7 includes a locking piece 44 sleeved on the guide rod 3 and a locking spring 45, one end of the locking piece 44 is clamped with the clamping platform 43, and the two ends of the locking spring 45 are respectively abutted with the top end of the lifting part 1 and the locking piece 4 When the lifting unit 1 is lifted up, the locking plate 44 is released from the guide rod 3 and the lifting plate 4 is lifted up.

[0054] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A lifting device capable of fine-tuning upward and downward movement, comprising a fixing portion and a lifting portion (1) arranged on the fixing portion, characterized in that: The fixing part comprises a base (2) and a guide rod (3) arranged on the base (2); a lifting plate (4), a climbing mechanism (5) and an adjusting handle (6) for controlling the climbing mechanism (5) are provided on the lifting part (1); pressing the adjusting handle (6) drives the climbing mechanism (5) to control the lifting part (1) and the lifting plate (4) to move upward along the guide rod (3); the lifting part (1) is also provided with a locking mechanism (7) engaged with the guide rod (3); the locking mechanism (7) limits the lifting part (1) from moving downward; the lifting plate (4) is slidably arranged on the lifting part (1); an adjusting mechanism (8) is provided between the lifting part (1) and the lifting plate (4); driving the adjusting mechanism (8) can control the lifting plate (4) to move up and down relative to the lifting part (1), thereby realizing the lifting plate (4) to fine-tune the lifting part (1) downward or upward.

2. The vertically adjustable lift device according to claim 1, characterized in that: The adjusting mechanism (8) comprises a threaded rod (9) and a driving assembly, the lifting plate (4) is threadedly connected to the threaded rod (9), and when the driving assembly drives the threaded rod (9) to rotate forward or reverse, the lifting plate (4) threadedly connected to the threaded rod (9) moves up and down along the threaded rod (9).

3. The vertically adjustable lift device according to claim 2, characterized in that: The lifting plate (4) is provided with a connecting portion (10), a threaded hole (11) is provided on the connecting portion (10), and the threaded rod (9) is arranged in the threaded hole (11) and is threadedly connected to the connecting portion (10).

4. A vertically adjustable lift according to any one of claims 2-3, characterized in that: The driving assembly comprises a linked helical gear (12), a driving helical gear (13), and a driving rod (14) arranged on the driving helical gear (13); the linked helical gear (12) is arranged on the threaded rod (9); the driving helical gear (13) and the linked helical gear (12) are meshed with each other; driving the driving rod (14) to rotate can drive the driving helical gear (13) to rotate; the driving helical gear (13) rotates to drive the linked helical gear (12) and the threaded rod (9) to rotate synchronously, thereby enabling the lifting plate (4) to move up and down along the threaded rod (9).

5. The vertically adjustable lift device according to claim 4, characterized in that: The driving assembly further comprises a driven gear (15) and a driving gear (16) rotatably arranged on the lifting part (1); the two ends of the driving rod (14) are respectively connected to the driven gear (15) and the driving bevel gear (13); the driving gear (16) is meshed with the driven gear (15); and a driving member (17) is connected to the driving gear (16).

6. The vertically adjustable lift device according to claim 5, characterized in that: The lifting part (1) is provided with a fixing hole (18), the driving gear (16) is provided with a driving hole (19), a rotating rod (20) is provided in the driving hole (19) and the fixing hole (18), a connecting hole (21) is provided at the inner end of the driving member (17), a gear hole (22) is provided in the driving gear (16), and a fixing rod (23) is provided in the gear hole (22) and the connecting hole (21).

7. The vertically adjustable lift device according to claim 6, characterized in that: The lifting part (1) is provided with a limiting hole (24), a limiting sleeve (25) is installed in the limiting hole (24), the driving rod (14) is arranged in the limiting sleeve (25), a dust cover (26) is provided on one side of the lifting part (1), a transmission space is formed between the dust cover (26) and the limiting sleeve (25), the driven gear (15) and the driving gear (16) are arranged in the transmission space, a rotating hole (27) corresponding to the position of the driving gear (16) is provided on the dust cover (26), and the inner end of the driving member (17) is arranged in the rotating hole (27).

8. The vertically adjustable lift device according to claim 1, characterized in that: The lifting part (1) is provided with a mounting hole (28), the lifting plate (4) is provided with an adjusting slide groove (29), and a guide rod (3) is provided in the mounting hole (28) and the adjusting slide groove (29).

9. The vertically adjustable lift according to any one of claims 2-3, characterized in that: The bottom of the lifting part (1) is provided with a mounting block (31), the mounting block (31) is fixedly connected to the lifting part (1), and an installation space (32) is formed in the lifting part (1). The middle part of the mounting block (31) is provided with a mounting part (33), the mounting part (33) is located in the installation space (32), a lower bearing (34) is provided in the mounting part (33), a bearing groove (35) is provided at the top of the installation space (32), an upper bearing (36) is provided in the bearing groove (35), the threaded rod (9) is arranged in the installation space (32), and an upper rotating part (37) and a lower rotating part (38) are provided at the upper and lower ends of the threaded rod (9), respectively, the upper rotating part (37) is connected to the upper bearing (36), and the lower rotating part (38) is connected to the lower upper bearing (36).

10. The vertically adjustable lift according to any one of claims 1 to 3, characterized in that: The lifting part (1) is provided with a climbing space (39), the climbing mechanism (5) is arranged in the climbing space (39), the lifting part (1) is sleeved on the guide rod (3), the guide rod (3) passes through the climbing space (39), the climbing mechanism (5) includes a climbing spring (40) and a climbing block (41) sleeved on the guide rod (3), the two ends of the climbing spring (40) respectively abut against the lower surface of the climbing block (41) and the bottom of the installation space (32), the lifting part (1) is provided with a fixed handle (42), the adjusting handle (6) The adjusting handle (6) is hinged to the fixed handle (42), and the inner end of the adjusting handle (6) is exposed in the climbing space (39). The inner end of the adjusting handle (6) is in contact with the upper surface of the climbing block (41). The top of the lifting part (1) is provided with a clamping platform (43). The locking mechanism (7) includes a locking plate (44) and a locking spring (45) which are sleeved on the guide rod (3). One end of the locking plate (44) is clamped with the clamping platform (43), and the two ends of the locking spring (45) are respectively in contact with the top of the lifting part (1) and the lower surface of the locking plate (44).

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