A height self - adaptive adjustment device

Abstract

The present invention provides a height self - adaptive adjustment device for supporting two supported surfaces that are spaced apart vertically to form a gap, including a first support body, a height - limiting component, and a second support body; a cavity extending downward is provided on the top wall of the first support body, and the cavity has two opposite first inclined - plane walls; the height - limiting component is arranged on the first support body and includes a horizontal axis and two positioning blocks arranged at intervals on the horizontal axis; both ends of the horizontal axis are respectively connected to the first support body in a vertically - sliding manner, and the two positioning blocks can approach or move away from each other along the axial direction of the horizontal axis under the driving of the rotation of the horizontal axis, and the side walls of the two positioning blocks facing away from each other respectively abut against the two first inclined - plane walls; the second support body is connected to the first support body in a vertically - sliding manner and has two support parts respectively pressing against the two positioning blocks. The height self - adaptive adjustment device provided by the present invention has a wide application range, high support reliability, and is simple and fast to operate.

Description

Technical Field

[0001] The present invention belongs to the technical field of maintenance of rail vehicles, and particularly relates to a height self-adaptive adjusting device. Background Art

[0002] After the operating mileage or the test of a rail vehicle is completed, it is necessary to return to the main factory to replace several wheel sets of a single bogie. At this time, the rail vehicle needs to be placed on a pit position, and the car body is lifted by a car lift and the relevant wheel sets are disassembled. During the wheel set replacement process, the bogie is in a suspended state, and relatively high requirements are imposed on the overall stiffness of the bogie. If excessive deformation occurs, it will cause damage to the bogie itself or related components of the car body. In severe cases, it may even lead to scrapping. Currently, in order to effectively increase the stiffness of the bogie itself and the stiffness relative to the car body, the commonly used means during the disassembly of the bogie wheel set are as follows: before the wheel set is disassembled, the gaps between the frame cap cylinders and the car body steel plates, the gaps between the bogie traction rods and the frame stops, and the gaps between the wheel set lifting and positioning swivel arms are filled with support bodies.

[0003] In the actual operation process, this working condition has a large demand for support bodies, the height requirements of the support bodies cannot be determined in advance before on-site confirmation, and high requirements are imposed on the strength of the support bodies. Currently, the commonly used support bodies are generally wooden blocks or iron blocks. The main problems with choosing wooden blocks are that the wooden blocks are soft and have excessive deformation and cracks during use, and there is a great risk of crushing. The main problems with choosing iron blocks are that it is difficult to find steel plates with just the right thickness, and due to the uncertainty of the height requirements of the support bodies, whether it is a wooden block or an iron block, there are problems of poor applicability, and a large number of support bodies of different sizes need to be prefabricated, resulting in waste of materials. Summary of the Invention

[0004] An embodiment of the present invention provides a height self-adaptive adjusting device, aiming to solve the problems of poor applicability and poor reliability of the support body when filling the gaps between various positions of the bogie and the corresponding components with the support body during the replacement of the bogie wheel set, improve the applicable range and reliability of the adopted support body, thereby improving work efficiency and reducing operation costs.

[0005] To achieve the above object, the technical solution adopted by the present invention is: to provide a height self-adaptive adjusting device for supporting two supported surfaces that are spaced apart vertically to form a gap, including:

[0006] A first support body, the top wall of which is provided with a cavity extending downward, the bottom wall of which abuts against the supported surface below, and the cavity has two opposite first inclined walls, and the two first inclined walls are inclined away from each other from bottom to top;

[0007] The height-limiting component is arranged on the first support body and includes a horizontal shaft and two positioning blocks arranged at intervals on the horizontal shaft; wherein, both ends of the horizontal shaft are respectively connected with the first support body in a vertically sliding manner, and the two positioning blocks can approach or move away from each other along the axial direction of the horizontal shaft under the action of rotational driving of the horizontal shaft, and the side walls of the two positioning blocks facing away from each other are both second inclined plane walls, and the two second inclined plane walls respectively abut against the two first inclined plane walls;

[0008] The second support body is connected with the first support body in a vertically sliding manner and has two support parts respectively pressing against the two positioning blocks, and the top wall of the second support body abuts against the supported surface above.

[0009] In a possible implementation manner, the horizontal shaft includes a right-handed thread section and a left-handed thread section. The right-handed thread section extends from the center of the horizontal shaft towards one end of the horizontal shaft, and the left-handed thread section extends from the center of the horizontal shaft towards the other end of the horizontal shaft; wherein, the right-handed thread section passes through one of the positioning blocks and is in threaded connection and cooperation, and the left-handed thread section passes through the other positioning block and is in threaded connection and cooperation.

[0010] In some embodiments, sliders are respectively rotatably connected to both ends of the horizontal shaft, and sliding grooves extending in the vertical direction are respectively arranged on two opposite outer walls of the first support body, and the two sliders are respectively slidably connected in the two sliding grooves.

[0011] Exemplarily, a locking component is arranged on the first support body. The locking component is respectively connected with the two positioning blocks and is used for restricting the upward movement of the two positioning blocks.

[0012] In a possible implementation manner, the locking component includes:

[0013] Two first wedge blocks, the wedge surfaces of the two first wedge blocks face away from each other and respectively abut against the opposite side walls of the two positioning blocks;

[0014] A telescopic support rod extends along the axial direction of the horizontal shaft, and both ends are respectively connected with the two first wedge blocks;

[0015] A locking rod is axially arranged on the first support body through the first support body. The locking rod has a locking state of being firmly connected with the first support body and also has an adjustment state of sliding up and down along the height direction of the first support body;

[0016] Wherein, two pressing blocks are sleeved on the locking rod at intervals, and the two pressing blocks respectively press against the two first wedge blocks.

[0017] In some embodiments, the opposite side walls of the two positioning blocks are both third inclined plane walls. The third inclined plane walls of the same positioning block are parallel to its second inclined plane wall and are in close contact with the wedge surfaces of the corresponding first wedge blocks.

[0018] Exemplarily, the telescopic support rod includes:

[0019] A guide rod is located between the two first wedge blocks and extends axially along the transverse axis, and a positioning ring is provided at the axial middle position of the guide rod;

[0020] Two hollow push rods are respectively slidably sleeved on the guide rod at both ends of the guide rod;

[0021] A plurality of adjustment pads are sleeved on the guide rod and are respectively located on both sides of the positioning ring;

[0022] The end walls of the two hollow push rods that are close to each other are respectively in contact with the adjustment pads on both sides of the positioning ring, and the ends of the two hollow push rods that are far away from each other are respectively connected to the two first wedge blocks.

[0023] By way of example, the locking lever comprises:

[0024] A screw rod is passed through the first support body and is located directly above the horizontal axis. The nut end of the screw rod abuts against one side wall of the first support body, and the threaded end of the screw rod extends out of the other side wall of the first support body and is screwed with a nut. Both pressure blocks are slidably sleeved on the screw rod.

[0025] An open gasket is sleeved on the screw and is located between the nut and the side wall of the first support body facing the nut;

[0026] Wherein, the two first inclined walls are each provided with a long hole suitable for the horizontal axis and the screw rod to pass through, and the long hole extends in the vertical direction.

[0027] In some embodiments, a group of support bars are provided on the outer wall surfaces of the two first inclined walls on the sides of the long holes, and the wall surfaces of the two groups of support bars facing away from the first support body are fourth inclined walls. The two fourth inclined walls are inclined away from each other from bottom to top, and two second wedge blocks are provided on the screw rod at intervals, and the wedge-shaped surfaces of the two wedge blocks are respectively in contact with the two fourth inclined walls.

[0028] In some embodiments, the second support body is slidably sleeved on the first support body up and down, and the support portion is a support plate disposed inside the second support body and extending downward into the cavity.

[0029] The beneficial effects of a height self - adaptive adjustment device provided by the present invention are as follows: Compared with the prior art, for the height self - adaptive adjustment device of the present invention, after confirming the gap size between two supported surfaces through a measuring tool, by rotating the horizontal axis to drive the two positioning blocks to approach or move away from each other, the second inclined - plane walls of the two positioning blocks slide up and down relative to the first inclined - plane wall of the first support body, so that the height of the top wall of the second support body relative to the bottom wall of the first support body matches the gap size obtained by measurement. Then, the bottom wall of the first support body is abutted against the lower supported surface, and the top wall of the second support body is abutted against the upper supported surface, thus forming a supporting effect between the two supported surfaces. On the one hand, since the two positioning blocks are in an inclined - plane abutting manner with the first support body, the support of the two positioning blocks for the second support body is stable and reliable, and the risk of crushing can be avoided. Moreover, by rotating the horizontal axis to drive the distance between the two positioning blocks, the support height can be adjusted. Therefore, it can adapt to support two supported surfaces with different - sized gaps. Compared with the prior art method of using wooden blocks or iron blocks for support, it has strong flexibility, high reliability, and a wide application range. Thus, it can save the materials and costs of manufacturing support blocks of different sizes, reduce waste, and at the same time save the time for preparing support bodies of different heights and improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 FIG. 6 is a three - dimensional structural schematic diagram of a height self - adaptive adjustment device provided by an embodiment of the present invention;

[0031] Figure 2 FIG. 10 is an internal structural schematic diagram of a height self - adaptive adjustment device provided by an embodiment of the present invention;

[0032] Figure 3 FIG. 14 is an exploded structural schematic diagram of a height self - adaptive adjustment device provided by an embodiment of the present invention;

[0033] Figure 4 FIG. 18 is a schematic diagram of the cooperation structure of a height - limiting component and a locking component adopted in an embodiment of the present invention.

[0034] In the figure: 10. First support body; 101. First inclined - plane wall; 102. Slideway; 103. Long strip hole; 11. Support strip; 111. Fourth inclined - plane wall; 20. Height - limiting component; 21. Horizontal axis; 211. Positive - rotation thread section; 212. Reverse - rotation thread section; 213. Slide block; 22. Positioning block; 221. Second inclined - plane wall; 222. Third inclined - plane wall; 30. Second support body; 31. Support part; 40. Locking component; 41. First wedge block; 42. Telescopic support rod; 421. Hollow top rod; 422. Guide rod; 4221. Positioning ring; 423. Adjusting pad; 43. Locking rod; 430. Pressing block; 431. Screw; 432. Nut; 433. Opening pad; 434. Second wedge block. Detailed implementation manners

[0035] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0036] It should be noted that when an element is referred to as being "disposed on" another element, it can be directly on the other element or indirectly on the other element. It should be understood that the orientation or positional relationship indicated by terms such as "length", "width", "upper", "lower", "front", "rear", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present invention. The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or several of such features. In the description of the present invention, the meaning of "a plurality of" and "several" is two or more, unless otherwise specifically defined.

[0037] It should be understood that the two supported surfaces can be understood as the two surfaces of the gaps that need to be filled and supported, such as the gaps between each frame cap cylinder and the car body steel plate, the gaps between the bogie traction tie rods and the frame stoppers, and the gaps between the wheel pair lifting and positioning arms before disassembling the wheel set. Usually, the two surfaces of these gaps are vertically spaced or spaced close to the vertical direction.

[0038] Please refer to Figures 1 to 4, a height adaptive adjustment device provided by the present invention will now be described. The height adaptive adjustment device is used to support two supported surfaces that are spaced apart vertically to form a gap, and includes a first support body 10, a height limiting component 20, and a second support body 30; wherein, a cavity extending downward is provided on the top wall of the first support body 10, the bottom wall abuts against the supported surface below, and the cavity has two opposite first inclined walls 101, and the two first inclined walls 101 are inclined away from each other from bottom to top; the height limiting component 20 is arranged on the first support body 10 and includes a horizontal shaft 21 and two positioning blocks 22 arranged at intervals on the horizontal shaft 21; wherein, both ends of the horizontal shaft 21 are slidably connected to the first support body 10 up and down, and the two positioning blocks 22 can approach or move away from each other along the axial direction of the horizontal shaft 21 under the driving action of the rotation of the horizontal shaft 21, and the side walls of the two positioning blocks 22 facing away from each other are both second inclined walls 221, and the two second inclined walls 221 respectively abut against the two first inclined walls 101; the second support body 30 is slidably connected to the first support body 10 up and down and has two support parts 31 respectively pressing against the two positioning blocks 22, and the top wall of the second support body 30 abuts against the supported surface above.

[0039] In this embodiment, the limiting component is a transitional structure for mutual support and connection between the first support body 10 and the second support body 30. The distance between the top wall of the first support body 10 and the bottom wall of the second support body 30 is mainly determined by the relative height position of the two positioning blocks 22 and the first support body 10. On this basis, the relative height position between the two positioning blocks 22 and the first support body 10 depends on the cooperation between the first inclined wall 101 and the second inclined wall 221. On the basis that the interval distance between the two positioning blocks 22 on the horizontal shaft 21 is adjusted in place, the two positioning blocks 22 can and can only abut downward against specific heights of the two first inclined walls 101. Since the first support body 10 and the second support body 30 bear mutual pressing forces during actual use, although this cooperation does not restrict the overall upward detachment of the height limiting component 20 from the two first inclined walls 101, it does not affect the stability and reliability of actual use; of course, after the height adjustment is in place, some limiting structures can also be used to restrict the overall upward movement of the height limiting component 20 to improve the integrity of the entire device.

[0040] It should be explained here that the horizontal axis 21 can slide up and down on the first support 10 and can be locked when it slides to the target position. At the same time, the horizontal axis 21 also needs to be able to rotate to drive the two positioning blocks 22 to approach or move away from each other. Based on this movement requirement, the two ends of the horizontal axis 21 can be indirectly connected to the first support 10 through a sliding pair. For example, slide rails are respectively arranged on the two side walls of the first support 10, and a slide seat is arranged on each of the two slide rails. A rotary adjusting screw can be arranged on the slide seat, and the lock is achieved by the abutment of the screw and the slide rail after sliding in place. Of course, the lock can also not be provided, and the two ends of the horizontal axis 21 can be rotatably matched with the two slide seats respectively.

[0041] Compared with the prior art, a height adaptive adjustment device provided in this embodiment, after measuring the gap size between the two supported surfaces through a measuring tool, drives the two positioning blocks 22 to approach or move away from each other by rotating the horizontal axis 21, so that the second inclined plane walls 221 of the two positioning blocks 22 slide up and down relative to the first inclined plane wall 101 of the first support 10, so that the height of the top wall of the second support 30 relative to the bottom wall of the first support 10 matches the measured gap size, and then the bottom wall of the first support 10 is abutted against the lower supported surface, and the top wall of the second support 30 is abutted against the upper supported surface, so as to form a supporting effect between the two supported surfaces. On the one hand, since the two positioning blocks 22 are in an inclined abutment with the first support 10, the support of the two positioning blocks 22 for the second support 30 is stable and reliable, the risk of crushing can be avoided, and the support height can be adjusted by driving the distance between the two positioning blocks 22 by rotating the horizontal axis 21. Therefore, it can adapt to the support of two supported surfaces with different size gaps. Compared with the prior art method of using wooden blocks or iron blocks for support, it has strong flexibility, high reliability, and a wide range of applications, so that the materials and costs for making support blocks of different sizes can be saved, waste can be reduced, and at the same time, the time for preparing support bodies of different heights can be saved, and the work efficiency can be improved.

[0042] In some embodiments, referring to Figure 2 , the horizontal axis 21 includes a positive rotation thread section 211 and a reverse rotation thread section 212. The positive rotation thread section 211 extends from the center of the horizontal axis 21 towards one end of the horizontal axis 21, and the reverse rotation thread section 212 extends from the center of the horizontal axis 21 towards the other end of the horizontal axis 21; wherein, the positive rotation thread section 211 passes through one of the positioning blocks 22 and is in threaded connection and cooperation, and the reverse rotation thread section 212 passes through the other positioning block 22 and is in threaded connection and cooperation. By respectively cooperating the positive rotation thread section 211 and the reverse rotation thread section 212 with the two positioning blocks 22, the synchronous approach or separation of the two positioning blocks 22 is realized when the horizontal axis 21 rotates. The structure is simple and practical, and the stability is strong.

[0043] It should be noted that in combination with Figures 2 to 4It is understood that sliders 213 are rotatably connected to both ends of the horizontal shaft 21 respectively. Slideways 102 extending in the vertical direction are respectively provided on two opposite outer walls of the first support 10, and the two sliders 213 are respectively slidably connected in the two slideways 102. Specifically, the slideway 102 can be a vertical groove type suitable for the slider 213 to be slidably embedded, or a vertical rail type that slidably cooperates with the slider 213. By using the up-and-down sliding cooperation between the slider 213 and the slideway 102 and the rotational cooperation between the horizontal shaft 21 and the slider 213, when the horizontal shaft 21 rotates to drive the two positioning blocks 22 to approach each other, the two second inclined plane walls 221 slide down relative to the two first inclined plane walls 101. Similarly, when the horizontal shaft 21 rotates to drive the two positioning blocks 22 to move away from each other, the two second inclined plane walls 221 slide up relative to the two first inclined plane walls 101, thereby realizing height adjustment. The adjustment process is flexible and convenient, with strong applicability, and the support state after adjustment is stable and reliable.

[0044] In some possible implementation manners, such as Figure 2 shown, a locking assembly 40 is provided on the first support 10. The locking assembly 40 is respectively connected to the two positioning blocks 22 and is used to limit the upward movement of the two positioning blocks 22. Since the two first inclined plane walls 101 respectively abut against the two second inclined plane walls 221, the two first inclined plane walls 101 can be directly used to limit the downward sliding of the two positioning blocks 22, which is also the key to realizing stable support. On this basis, the locking assembly 40 can be used to limit the upward movement of the two positioning blocks 22, such as respectively abutting against the two positioning blocks 22 through a pressing structure, so as to avoid the overall upward detachment of the height limiting assembly 20 from the first support 10, and improve the integrity of the device and the stability of the overall state during the transfer process.

[0045] As a specific implementation manner of the above locking assembly 40, please refer to Figures 2 to 4 , the locking assembly 40 includes two first wedges 41, a telescopic support rod 42, and a locking rod 43; the wedge surfaces of the two first wedges 41 face away from each other and respectively abut against the opposite side walls of the two positioning blocks 22; the telescopic support rod 42 extends along the axial direction of the horizontal shaft 21, and both ends are respectively connected to the two first wedges 41; the locking rod 43 is axially inserted through the first support 10 along the horizontal shaft 21. The locking rod 43 has a locking state of being firmly connected to the first support 10 and also has an adjustment state of sliding up and down along the height direction of the first support 10; wherein, two pressing blocks 430 are spacedly sleeved on the locking rod 43, and the two pressing blocks 430 respectively press on the two first wedges 41. Specifically, the opposite side walls of the two positioning blocks 22 are both third inclined plane walls 222. The third inclined plane walls 222 of the same positioning block 22 are parallel to its second inclined plane wall 221 and are in close contact and abut against the wedge surfaces of the corresponding first wedges 41.

[0046] It should be understood that the function of the locking assembly 40 is to prevent the height-limiting assembly 20 from freely moving upward and detaching from the first support body 10. However, generally, setting a simple pressing structure to limit the upward movement of the height-limiting assembly 20 will affect the convenience of height adjustment to a certain extent. Here, in order to avoid or minimize the impact of the locking action on the operation convenience or efficiency, the locking assembly 40 is developed. Its specific working process can be generally divided into two cases according to the requirements of the height adjustment range:

[0047] In the first case, when the height adjustment amplitude is small (less than the height value of the first wedge block 41), the support distance of the telescopic support rod 42 for the two first wedge blocks 41 does not need to be changed, and the locking state of the locking rod 43 does not need to be changed either. Relying on the mutually parallel first inclined plane wall 101, the second inclined plane wall 221, and the third inclined plane wall 222, therefore, only by rotating the cross shaft 21 can the two positioning blocks 22 be made to approach or move away from each other, so that the second inclined plane wall 221 descends or rises relative to the first inclined plane wall 101, and at the same time the third inclined plane wall 222 descends or rises relative to the wedge-shaped surface of the first wedge block 41, thereby realizing fine adjustment of the height of the two positioning blocks 22 relative to the first support body 10. That is to say, although the locking assembly 40 is used to lock the height-limiting assembly 20, when performing a small-amplitude height adjustment, the locking assembly 40 itself does not affect the adjustment operation, so the rapidity and convenience of the adjustment can be ensured.

[0048] In the second case, when the height adjustment amplitude is relatively large compared to the first case (greater than the height value of the first wedge block 41), when it is necessary to adjust the distance between the bottom wall of the first support body 10 and the top wall of the second support body 30 (i.e., the support height), taking the adjustment to reduce the support height as an example, at this time, the height-limiting assembly 20 can be adjusted in the way of the first case first, that is, by rotating the cross shaft 21 to drive the two positioning blocks 22 to approach each other, and at the same time, the second inclined plane walls 221 of the two positioning blocks 22 slide down relative to the two first inclined plane walls 101 respectively, and the sliding height is close to the target adjustment height (equivalent to rough adjustment). Here, it should be understood that even if the sliding height of the two positioning blocks 22 is large and the second inclined plane wall 221 is separated from the wedge-shaped surface of the corresponding first wedge block 41, it does not affect the normal operation. After the positioning block 22 is roughly adjusted in place, adjust the support length of the telescopic support rod 42 to make the two first wedge blocks 41 approach each other, so that the wedge-shaped surface of the first wedge block 41 slides down along the corresponding second inclined plane wall 221 (if the two are in a separated state, first make the two first wedge blocks 41 approach each other so that the wedge-shaped surfaces of the two first wedge blocks 41 are reattached to the corresponding second inclined plane walls 221), at this time, since the height of the first wedge block 41 drops, the locking rod 43 needs to be adjusted to the adjustment state and re-pressed on the two wedge blocks and then switched to the locking state, and then fine adjustment is carried out again in the way of the first case until the final adjustment is in place.

[0049] It can be seen that the height self - adaptive adjustment device provided in this embodiment can meet various support requirements with large differences in gap sizes, has a wide application range, and for cases with small size differences, the height can be adjusted directly by rotating the horizontal axis 21 without additional operations on the locking component 40. Therefore, the adjustment process is flexible and fast, which is beneficial to improving the operation efficiency.

[0050] Exemplarily, in this embodiment, referring to Figure 3 , the telescopic support rod 42 includes a guide rod 422, two hollow ejector rods 421, and several adjusting pads 423; wherein, the guide rod 422 is located between the two first wedges 41 and extends along the axial direction of the horizontal axis 21. A positioning ring 4221 is provided at the middle position of the axial direction of the guide rod 422; the two hollow ejector rods 421 are respectively sleeved on the guide rod 422 in a sliding manner at both ends of the guide rod 422; the two adjusting pads 423 are sleeved on the guide rod 422 and are respectively located on both sides of the positioning ring 4221; the end walls of the two hollow ejector rods 421 close to each other are respectively abutted against the adjusting pads 423 on both sides of the positioning ring 4221, and the end parts of the two hollow ejector rods 421 away from each other are respectively connected to the two first wedges 41.

[0051] By replacing adjusting pads 423 with different thicknesses or increasing or decreasing the number of adjusting pads 423, the distance between the two hollow ejector rods 421 can be changed, thereby adjusting the support distance of the telescopic support rod 42 for the two first wedges 41. The adjustment method is simple and convenient, and the locked state after adjustment is stable and reliable.

[0052] As another structural form of the telescopic support rod 42, the telescopic support rod 42 can also be a structure in which a stud and a nut are screwed together. The two ends of the stud and the nut are respectively connected to the two first wedges 41. Of course, at least one of their ends should be rotatably connected to the corresponding first wedge 41, so that the support interval of the telescopic support rod 42 can be adjusted by rotating the stud or the nut, and the operation is simple and fast.

[0053] For example, such as Figure 3 and Figure 4As shown in the figure, in this embodiment, the locking rod 43 includes a screw rod 431 and an opening gasket 433. Among them, the screw rod 431 passes through the first support body 10 and is located directly above the horizontal axis 21. The nut end of the screw rod 431 abuts against one side wall of the first support body 10. The threaded end of the screw rod 431 extends out of the other side wall of the first support body 10 and is screwed with a nut 432. Both pressing blocks 430 are slidably sleeved on the screw rod 431. The opening gasket 433 is sleeved on the screw rod 431 and is located between the nut 432 and the side wall of the first support body 10 facing the nut 432. Long strip holes 103 adapted for the horizontal axis 21 and the screw rod 431 to pass through are formed on both first inclined plane walls 101, and the long strip holes 103 extend in the vertical direction. By pulling out the opening gasket 433, the relative height position of the screw rod 431 in the long strip hole 103 can be adjusted up and down. After the adjustment is in place, the opening gasket 433 can be reinserted. The adjustment method is simple and fast, which can improve the operation efficiency.

[0054] It should be understood that in this embodiment, in combination with Figure 1 and Figure 3 Understand that a set of support bars 11 are provided on the outer wall surfaces of both first inclined plane walls 101 on the side of the long strip hole 103. The wall surfaces of the two sets of support bars 11 facing away from the first support body 10 are fourth inclined plane walls 111. The two fourth inclined plane walls 111 are inclined away from each other from bottom to top. Two second wedge blocks 434 are spacedly penetrated on the screw rod 431, and the wedge surfaces of the two wedge blocks are respectively in fit contact with the two fourth inclined plane walls 111.

[0055] It should be understood here that a set of support bars 11 may include two relatively arranged L-shaped plates respectively located on both sides of the long strip hole 103. The two L-shaped plates enclose a chute adapted for sliding cooperation with the end part (provided with a slider 213) of the horizontal axis 21. The wall surface of the support bar 11 facing away from the first support body 10 serves as the fourth inclined plane wall 111 to cooperate with the wedge surfaces of the second wedge blocks 434 penetrated through both ends of the screw rod 431. Since the two second inclined plane walls 221 are far away from each other from bottom to top, the limit height position at which the locked second wedge block 434 can slide upward relative to the fourth inclined plane wall 111 can be locked when the distance between the nut end of the screw rod 431 and the nut 432 is certain. On the one hand, it is to improve the reliability of the locked state. On the other hand, it is to reduce the tightening force between the nut 432 and the screw rod 431. The operator only needs to manually screw and apply the tightening force to meet the requirements. Of course, it should be understood that since the height limiting component 20 has a relatively low restriction or locking requirement for upward slipping, a certain clearance amount is allowed and it will not affect the accurate dimension of the support height. Therefore, even if there is a slight clearance between the wedge surface of the second wedge block 434 and the corresponding fourth inclined plane wall 111, the locking requirement for the height limiting component 20 can be met. At the same time, this slight clearance can also reduce the frictional resistance when the height limiting component 20 adjusts the height, thereby improving the flexibility and lightness of height adjustment.

[0056] Optionally, referring to Figure 2 , in this embodiment, the second support 30 is slidably sleeved on the first support 10 up and down, and the support portion 31 is a support plate disposed inside the second support 30 and extending downward into the cavity. Specifically, the support plate can be directly supported inside the second support 30 or fixedly connected to the second support 30.

[0057] The second support 30 and the first support 10 can be a square shell structure that slidably fits with each other. Among them, long strip holes 103 adapted for the two ends of the horizontal axis 21 and the two ends of the screw 431 to pass through and move up and down are provided on the first support 10. The second support 30 is installed with its mouth facing downward, and the upper and lower sliding fit between the two is realized by the cooperation of its four inner corners and the four outer corners of the first support 10. At the same time, the second support 30 should have avoidance grooves for avoiding the two ends of the horizontal axis 21 and the two ends of the screw 431 structure, so as to avoid interference between the second support 30 and the height limiting component 20 and the locking component 40 during the height adjustment process.

[0058] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A height self - adaptive adjusting device for supporting two supported surfaces that are spaced apart vertically to form a gap, Characterized in that, Comprising: A first support body, the top wall of which is provided with a cavity extending downward, the bottom wall of which abuts against the lower supported surface, and the cavity has two opposite first inclined - plane walls, and the two first inclined - plane walls are inclined away from each other from bottom to top; A height - limiting component, provided on the first support body, comprising a horizontal shaft and two positioning blocks spaced apart on the horizontal shaft; wherein, the two ends of the horizontal shaft are respectively connected to the first support body in a vertically - sliding manner, and the two positioning blocks can approach or move away from each other along the axial direction of the horizontal shaft under the driving of the rotation of the horizontal shaft, and the side walls of the two positioning blocks facing away from each other are both second inclined - plane walls, and the two second inclined - plane walls respectively abut against the two first inclined - plane walls; A second support body, slidably connected to the first support body vertically, having two support portions respectively pressing against the two positioning blocks, and the top wall of the second support body abuts against the upper supported surface; A locking component is provided on the first support body, and the locking component is respectively connected to the two positioning blocks for restricting the upward movement of the two positioning blocks; the locking component comprises: Two first wedge blocks, the wedge - shaped surfaces of the two first wedge blocks face away from each other and respectively abut against the opposite side walls of the two positioning blocks; A telescopic support rod, extending along the axial direction of the horizontal shaft, and the two ends of which are respectively connected to the two first wedge blocks; A locking rod, axially penetrating through the first support body along the axial direction of the horizontal shaft, the locking rod has a locking state of being firmly connected to the first support body, and also has an adjusting state of sliding up and down along the height direction of the first support body; Wherein, two pressing blocks are sleeved on the locking rod at intervals, and the two pressing blocks respectively press against the two first wedge blocks.

2. A height self - adaptive adjusting device as claimed in claim 1, Characterized in that, The horizontal shaft comprises a right - hand thread section and a left - hand thread section, the right - hand thread section extends from the center of the horizontal shaft towards one end of the horizontal shaft, and the left - hand thread section extends from the center of the horizontal shaft towards the other end of the horizontal shaft; wherein, the right - hand thread section passes through one of the positioning blocks and is in threaded engagement, and the left - hand thread section passes through the other positioning block and is in threaded engagement.

3. A height self - adaptive adjusting device as claimed in claim 2, Characterized in that, Sliders are respectively rotatably connected to the two ends of the horizontal shaft, and sliding grooves extending in the vertical direction are respectively provided on the two opposite outer walls of the first support body, and the two sliders are respectively slidably connected in the two sliding grooves.

4. A height self - adaptive adjusting device as claimed in claim 1, Characterized in that, The opposite side walls of the two positioning blocks are both third inclined - plane walls, the third inclined - plane walls of the same positioning block are parallel to its second inclined - plane walls, and are in abutting contact with the wedge - shaped surfaces of the corresponding first wedge blocks.

5. A height self - adaptive adjusting device as claimed in claim 1, Characterized in that, The telescopic support rod comprises: The guide rod is located between the two first wedges and extends along the axial direction of the horizontal axis. A positioning ring is provided at the axial middle position of the guide rod; Two hollow ejector rods are respectively sleeved on the guide rod in a sliding manner at both ends of the guide rod; A plurality of adjusting pads are sleeved on the guide rod and are respectively located on both sides of the positioning ring; Wherein, the end walls of the two hollow ejector rods close to each other are respectively abutted against the adjusting pads on both sides of the positioning ring, and the end parts of the two hollow ejector rods away from each other are respectively connected to the two first wedges.

6. The height adaptive adjustment device according to claim 1, characterized in that, The locking rod includes: A screw rod is inserted through the first support body and is located directly above the horizontal axis. The nut end of the screw rod abuts against one side wall of the first support body. The threaded end of the screw rod extends out of the other side wall of the first support body and is screwed with a nut. Both of the pressing blocks are slidably sleeved on the screw rod; An opening pad is sleeved on the screw rod and is located between the nut and the side wall of the first support body facing the nut; Wherein, long holes adapted for the horizontal axis and the screw rod to pass through are formed on both of the first inclined surfaces, and the long holes extend in the vertical direction.

7. The height adaptive adjustment device according to claim 6, characterized in that, A set of support bars are provided on the outer wall surfaces of the two first inclined surfaces on the side of the long hole. The wall surfaces of the two sets of support bars away from the first support body are fourth inclined surfaces. The two fourth inclined surfaces are inclined away from each other from bottom to top. Two second wedges are spacedly inserted through the screw rod, and the wedge surfaces of the two wedges are respectively abutted against the two fourth inclined surfaces in a fitting manner.

8. The height adaptive adjustment device according to any one of claims 1-7, characterized in that, The second support body is slidably sleeved on the first support body up and down, and the support part is a support plate provided inside the second support body and extending downward into the cavity.

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