CN215051645U - Rail transit height adjustment support - Google Patents
Rail transit height adjustment support Download PDFInfo
- Publication number
- CN215051645U CN215051645U CN202120151113.7U CN202120151113U CN215051645U CN 215051645 U CN215051645 U CN 215051645U CN 202120151113 U CN202120151113 U CN 202120151113U CN 215051645 U CN215051645 U CN 215051645U
- Authority
- CN
- China
- Prior art keywords
- stud
- plate
- threaded sleeve
- height
- fulcrum
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Connection Of Plates (AREA)
Abstract
The utility model relates to a track traffic height adjustment support. The vertical adjustment of the support is realized through the worm gear and the height adjusting plate thereof, and the height adjustment with high precision and large range can be realized. The utility model adopts the technical scheme that the device comprises a box body, a screw sleeve is arranged in the box body, a double-screw bolt extending out of the box body is arranged in the screw sleeve, the upper end of the double-screw bolt is fixedly connected with a support, a locking eccentric nut with the lower end extending into the screw sleeve is arranged at the upper end of the screw sleeve, the locking eccentric nut and the trapezoidal thread on the screw sleeve are matched with the trapezoidal thread on the circumference of the double-screw bolt, a guide post is arranged in the double-screw bolt, a small cylinder at the lower end of the guide post is fixedly connected with a box bottom plate, a large cylinder at the upper end is in clearance fit with the inner wall of the double-screw bolt, a worm wheel and a worm which are meshed with each other are arranged between the screw sleeve and the inner wall of the box body, and the worm wheel is arranged on the circumference of the upper part of the screw sleeve; the bottom of the box bottom plate is provided with a plurality of heightening plates, the peripheries of two adjacent heightening plates are connected through a clamping seat, and the end part of the clamping seat is locked with the heightening plates through a locking screw rod.
Description
Technical Field
The utility model relates to a track traffic technical field especially relates to a track traffic height adjustment support.
Background
With the development of economy and the acceleration of urbanization progress in China, the scale of urban population is increased explosively, in order to relieve the problem of traffic congestion caused by the increase of population, the urban rail transit industry in China is rapidly developed, and subways become the key for relieving the problem of traffic congestion with the advantages of rapidness, safety, convenience, punctuality and the like.
Due to the complexity of geological conditions and the particularity of subway line selection, some sections inevitably pass through a crushing area and a ground crack deformation zone, so that the subway line deforms to different degrees during operation, the deformed line needs to be adjusted quickly in order to ensure the safety of subway operation and quick recovery of operation, the height of the deformed line is adjusted through a fastener system in the current main way of adjusting the height of the rail surface, namely the height is adjusted by changing the thickness of a pad under the rail or filling a height-adjusting pad under an iron pad, but the general height adjustment is only 30-40mm due to structural limitation, and the requirements of severe working conditions such as large deformation of the ground crack cannot be met; and the adjustment work is complicated, and the requirement of quick adjustment cannot be met in time.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem that faces at present, the utility model provides a track traffic height adjustment support.
Compared with the prior art, the utility model discloses a technical scheme be: the utility model provides a track traffic height adjustment support, includes hollow box, and the box sets up on the bottom plate of the case, its characterized in that: a threaded sleeve is arranged in the box body, a threaded stud extending out of the box body is arranged in the threaded sleeve, the upper end of the threaded stud is fixedly connected with the support, a locking eccentric nut with the lower end extending into the threaded sleeve is arranged on the inner wall of the upper end of the threaded sleeve, and the contact surface of the threaded sleeve and the locking eccentric nut is a conical surface;
trapezoidal threads are arranged on the inner walls of the locking eccentric nut and the screw sleeve and matched with the trapezoidal threads on the circumference of the stud, and the thread lead angle of the trapezoidal threads of the stud is smaller than the equivalent friction angle;
the symmetric center line of the trapezoidal thread of the locking eccentric nut is eccentric 0.5mm from the symmetric center line of the conical surface;
the stud is internally provided with a guide post, the guide post is two integrally formed cylinders with different diameters, a small cylinder at the lower end is fixedly connected with the box bottom plate, a large cylinder at the upper end is in clearance fit with the inner wall of the stud, and the circumference of the large cylinder is provided with a key groove;
the inner surface of the stud is longitudinally provided with a strip-shaped guide notch, and the guide notch is matched with a key in a key groove at the large-diameter end of the guide column;
a worm wheel and a worm which are meshed with each other are arranged between the threaded sleeve and the inner wall of the box body, the worm wheel is arranged on the circumference of the upper part of the threaded sleeve, and the expansion helical angle of the worm is smaller than the contact friction angle of the worm wheel and the worm;
the bottom of the box bottom plate is provided with a plurality of heightening plates, the peripheries of two adjacent heightening plates are connected through a U-shaped clamping seat, and the end part of the clamping seat is locked with the heightening plates through locking screws.
Furthermore, the inner wall of the box body is provided with a bearing bush.
Furthermore, a rectangular notch convenient to mount is formed in the circumference of the locking eccentric nut.
Furthermore, the bottom is provided with the antifriction plate, and the antifriction plate sets up on the bottom plate of the case.
Furthermore, the upper surface of the box bottom plate is provided with a stainless steel plate which is attached to the wear-resistant plate.
Furthermore, a corresponding groove is formed between every two adjacent heightening plates, a connecting pin used for connecting the two adjacent heightening plates is arranged in the groove, and the upper end of the connecting pin in the groove of the first heightening plate extends into the inner hole in the bottom of the guide column through the box bottom plate.
Compared with the prior art, the beneficial effects of the utility model are that:
1) the utility model realizes the first heavy self-locking by the trapezoidal thread matching of the stud and the screw sleeve; the conical surface of the locking eccentric nut and the conical surface of the screw sleeve are mutually extruded, so that the second self-locking of the mechanism is realized; the worm is meshed with the worm wheel to realize the third self-locking of the support; the stud is more accurately ensured not to descend when being subjected to vertical load;
2) the installation and the disassembly of the height-adjusting base plate of the utility model are quick and simple, and the clamping and the loosening of the height-adjusting base plate can be controlled by directly fastening and loosening the locking screw and the nut;
3) the utility model can realize the height adjustment with high precision and large range by combining the trapezoidal thread transmission of the stud and the screw sleeve and the increase and decrease of the number of the height adjusting plates;
4) the utility model is provided with the support, which can evenly apply the output force on the track slab;
5) the utility model realizes the guiding of the stud by the matching of the guide post and the key with the guide groove on the inner surface of the stud, prevents the stud from rotating in the ascending or descending process, and simultaneously can align the trapezoidal thread matching of the stud and the screw sleeve, prevents the support from being influenced by transverse force, and increases the friction resistance due to the eccentric wear of the trapezoidal threads of the stud and the screw sleeve;
6) the friction pair between the wear-resisting plate below the threaded sleeve and the stainless steel plate on the box bottom plate and the friction pair between the bearing bush and the threaded sleeve are arranged, so that the friction loss during rotation of the threaded sleeve can be reduced, and the transmission efficiency of the support is improved;
7) the utility model is simple in operation, can realize the manual or automatic adjustment to the track board height through connecting specialized tool or motor at the input of worm, it is efficient, can accomplish the adjustment to the circuit elevation in the short time.
Drawings
Fig. 1 is a front view of the present invention;
fig. 2 is an enlarged view of the present invention at Z;
FIG. 3 is a view from A-A of the present invention;
FIG. 4 is a schematic structural view of the threaded sleeve and the wear-resisting plate of the present invention;
FIG. 5 is a schematic structural view of the bottom plate and the stainless steel plate of the present invention;
FIG. 6 is a schematic view of the utility model after the track deformation and adjustment;
FIG. 7 is a schematic view of the height adjustment support of the present invention;
fig. 8 is an installation diagram of the lower panel area when n is 4 according to the present invention;
fig. 9 is an installation diagram of the upper disc area when n is 4 according to the present invention;
the steel plate comprises a support 1, a stud 2, a locking eccentric nut 3, a thread sleeve 4, a worm wheel 5, a worm 6, a guide post 7, a box 8, a box bottom plate 9, a key 10, a bearing bush 11, a height adjusting plate 12, a clamping seat 13, a locking screw 14, a connecting pin 15, a track plate 20, an embedded steel plate 20.1, an abrasion-resistant plate 21, a stainless steel plate 22, a steel rail 30, foundation concrete 40, an embedded steel plate 40.1 and a concrete cushion block 40.2.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The embodiment provides a height adjusting support for rail transit, which comprises a support 1, a stud 2, a locking eccentric nut 3, a threaded sleeve 4, a worm wheel 5, a worm 6, a guide post 7, a box body 8, a box bottom plate 9, a height adjusting plate 12 and a clamping seat 13, as shown in fig. 1;
the box body 8 is arranged on the box bottom plate 9 and welded into a whole, the box body 8 is internally provided with a threaded sleeve 4, the threaded sleeve 4 is internally provided with a threaded stud 2 extending out of the box body 8, the upper end of the threaded stud 2 is assembled and welded with the support 1 or connected into a whole through a screw, the inner wall of the upper end of the threaded sleeve 4 is provided with a locking eccentric nut 3 of which the lower end extends into the threaded sleeve 4, and the contact surface of the threaded sleeve 4 and the locking eccentric nut 3 is a conical surface;
trapezoidal threads are arranged on the inner walls of the locking eccentric nut 3 and the threaded sleeve 4 and are matched with the trapezoidal threads on the circumference of the stud 2, and the thread lead angle of the trapezoidal threads of the stud 2 is smaller than the equivalent friction angle, so that the first heavy self-locking of the support is realized;
the symmetric center line of the trapezoidal thread of the locking eccentric nut 3 is eccentric 0.5mm from the symmetric center line of the conical surface, and after the height of the support is adjusted, the locking eccentric nut 3 is screwed down to extrude the conical surface of the locking eccentric nut 3 and the conical surface of the inner wall of the screw sleeve 4, so that the second self-locking of the support is realized; when the height needs to be adjusted, the locking eccentric screw 3 is loosened; meanwhile, a rectangular notch convenient to install is formed in the circumference of the locking eccentric nut 3;
a guide post 7 is arranged in the stud 2, the guide post 7 is two integrally formed cylinders with different diameters, a small cylinder at the lower end is fixedly connected with a box bottom plate 9, a large cylinder at the upper end is in clearance fit with the inner wall of the stud 2, and a key groove is arranged on the circumference of the large cylinder;
the inner surface of the stud 2 is longitudinally provided with a strip-shaped guide notch, the guide notch is matched with a key 10 in a key groove at the large-diameter end of a guide post 7, so that the stud 2 is guided, the stud 2 is prevented from rotating in the ascending or descending process, meanwhile, the stud 2 can be aligned with the trapezoidal threads of the screw sleeve 4 to be matched, the support is prevented from being influenced by transverse force, and the trapezoidal threads of the stud 2 and the screw sleeve 4 are eccentrically worn, so that the friction resistance is increased;
a worm wheel 5 and a worm 6 which are meshed with each other are arranged between the threaded sleeve 4 and the inner wall of the box body 8, the worm wheel 5 is arranged on the circumference of the upper end of the threaded sleeve 4, and the expansion spiral angle of the worm 6 is smaller than the friction angle of the worm wheel 5 and the worm 6 in contact, so that the third self-locking of the support is realized; one end of the worm 6 is an input end, a square shaft for inputting torque is arranged, manual operation can be performed through a special tool, and automatic operation can also be performed by connecting a motor at the input end.
The bottom of the box bottom plate 9 is provided with 4 height-adjusting plates 12, two adjacent height-adjusting plates 12 are connected through a U-shaped clamping seat 13, the end part of the clamping seat 13 is provided with a locking screw 14, the locking screw 14 is locked with the height-adjusting plates 12, the clamping seat 13 is of a groove-shaped structure, and a groove opening is wedge-shaped, so that the connection strength can be increased through fastening the locking screw 14 and a nut; the adjacent two heightening plates 12 are respectively and correspondingly provided with a groove, a connecting pin 15 is arranged in the corresponding groove for connecting and positioning, and the upper end of the connecting pin in the groove of the first heightening plate extends into the inner hole at the bottom of the guide column 7 through the box bottom plate 9.
The height-adjusting plate 12 is formed by assembling and welding a cover plate and a web plate; the outer surface of the cover plate is provided with a rectangular groove for mounting a locking screw 14, the central position of the cover plate is provided with a circular groove for mounting a connecting pin 15, and the inner surface of the cover plate is provided with a wedge-shaped surface matched with the clamping seat 13; the installation and the dismantlement of heightening backing plate 12 are quick, simple, can directly realize through the fastening and the loosening of locking screw 14 and nut to control the chucking and the loosening of the heightening backing plate 12 of chucking seat 13, as shown in figure 3.
A groove is formed in the inner wall of the box body 8, a bearing bush 11 is arranged in the groove, and as shown in fig. 2, the friction coefficient of the bearing bush 11 is small, and a friction pair with a small friction coefficient is formed between the bearing bush 11 and the threaded sleeve 4, so that the friction loss when the threaded sleeve 4 rotates is reduced, and the transmission efficiency of the support is improved;
the wear-resistant plate 21 is disposed at the bottom of the threaded sleeve 4, and as shown in fig. 4, the wear-resistant plate 21 has the characteristics of small friction coefficient and wear resistance, and is disposed on the box bottom plate 9.
The screw sleeve 4 is of a cylindrical structure, the inner diameter of the screw sleeve is provided with a trapezoidal thread, and the upper end of the screw sleeve is provided with a wedge-shaped notch;
the upper surface of the box bottom plate 9 is provided with a stainless steel plate 22, as shown in fig. 5, the stainless steel plate 22 is attached to a wear-resistant plate 21, the upper surface of the box bottom plate 9 is provided with a circular groove, the lower surface is provided with a rectangular notch, and the middle part is provided with a threaded through hole; the stainless steel plate 22 is a mirror surface stainless steel plate, is assembled and welded on the groove of the box bottom plate 9, and the mirror surface of the stainless steel plate 22 is upward after the assembly and welding; the wear-resisting plate 21 at the bottom of the threaded sleeve 4 is in contact fit with the stainless steel plate 22 on the box bottom plate 9 to form a friction pair with a small friction coefficient, so that the friction loss of the threaded sleeve 4 during rotation is reduced, and the transmission efficiency of the support is improved;
a use method of a rail transit height adjusting support comprises the following steps:
the rail surface is deformed due to dislocation of the ground fissure, when the height of the rail is adjusted, the maximum gradient requirement of the adjusted rail is met according to the dislocation amount of the actual lower disc, and the height adjustment amount of each height adjustment support are determined, so that the upper disc area rail is subjected to height adjustment treatment, and the lower disc area rail is subjected to height adjustment treatment, as shown in fig. 6;
the height adjusting module is formed by symmetrically arranging 8 height adjusting supports below each track slab, each two height adjusting supports are in one group, the height adjusting amount of each group is the same, and the height adjusting supports are respectively defined as a first fulcrum, a second fulcrum, a third fulcrum and a fourth fulcrum from left to right, as shown in fig. 7;
firstly, determining the installation modes of a lower disc area and an upper disc area according to a predicted value H of the maximum vertical dislocation quantity of the cracks in a subway design period; setting the height of the height-adjusting plate to be H0, setting the working stroke of the stud to be H1, and then setting the number n of the height-adjusting plate to be (H/2-H1)/H0, and when the value is a decimal, counting the decimal into 1 bit to obtain an integer;
a method of using the height adjustment holder will be described when the height adjustment plate height H0 is 100mm and the working stroke H1 of the stud is 100 mm.
Fig. 8 is an installation diagram of the lower panel area when n is 4 according to the present invention;
when the disc is lowered, the height adjusting support is provided with 4 height adjusting plates 12, meanwhile, the stud 2 is lifted to the working stroke of 100mm by controlling the input end, and then the locking eccentric nut 3 is screwed; the height adjusting support is fixed by connecting the height adjusting plate 12 at the lowest end with a lower embedded steel plate 40.1 of the foundation concrete 40 through bolts; connecting the embedded steel plate 20.1 in the track plate 20 with the support 1 through the mounting hole on the track plate 20 by using an inner hexagonal socket head cap screw to realize the connection of the height adjusting support and the track plate 20; then laying a steel rail 30 on the rail plate 20;
fig. 9 is an installation diagram of the upper disc area when n is 4 according to the present invention;
when the upper plate is hung, the height adjusting support does not need the height adjusting plate 12, the clamping seat 13, the locking screw 14 and the connecting pin 15, the stud 2 is completely retracted by controlling the input end, the locking eccentric nut 3 is screwed, the lower embedded steel plate 40.1 and the concrete cushion block 40.2 with the height of 500mm are arranged on the foundation concrete 40, and the lower embedded steel plate 40.1 is connected with the lower embedded steel plate 40.1 through the box bottom plate 9, so that the height adjusting support is fixed; connecting the embedded steel plate 20.1 in the track plate 20 with the support 1 through the mounting hole on the track plate 20 by using an inner hexagonal socket head cap screw to realize the connection of the height adjusting support and the track plate 20; then laying a steel rail 30 on the rail plate 20;
the adjustment method of the lower disk area is divided into two cases: the accumulated adjustment amount is less than or equal to 100mm and the accumulated adjustment amount is greater than 100 mm;
(1) when the accumulated adjustment amount is less than or equal to 100mm, firstly loosening the locking eccentric nut 3 to the uppermost end of the stud 2, directly controlling the input end of the height adjusting support at each fulcrum under the height adjusting module to reach the required reduction amount of each fulcrum, and then screwing the locking eccentric nut 3;
(2) when the accumulated adjustment amount is greater than 100mm, the input end of the height adjusting support at each branch point under the control height adjusting module is combined with the height reducing plate 12 to realize the height adjustment of the track: the reduction number of the height-adjustment plates 12 is determined according to a specific adjustment amount; the specific adjustment method is as follows:
1) loosening the locking eccentric nut 3 of the height adjusting support at each supporting point to the uppermost end of the stud 2;
2) loosening the bolts of the height adjusting supports and the lower embedded steel plates 40.1 at each supporting point;
3) loosening and detaching a clamping seat 13, a locking screw 14 and a nut which are used for clamping the bottommost elevation plate 12;
4) controlling the input ends of the height adjusting supports at the second fulcrum and the fourth fulcrum, increasing the extension amount of the stud 2, jacking the track plate 20 to a certain height, separating the height adjusting supports at the first fulcrum and the third fulcrum from the lowest height adjusting plate 12, and drawing out the lowest height adjusting plate 12 and the connecting pin 15;
5) controlling the input ends of the height adjusting supports at the first fulcrum and the third fulcrum, increasing the extension amount of the stud 2, enabling the height adjusting supports at the first fulcrum and the third fulcrum to be in contact with the lower embedded steel plate 40.1, and enabling the height adjusting supports at the first fulcrum, the second fulcrum, the third fulcrum and the fourth fulcrum to jointly support the track plate 20;
6) controlling the input ends of the height adjusting supports at the second fulcrum and the fourth fulcrum, completely retracting the stud 2, separating the height adjusting plates 12 of the height adjusting supports at the second fulcrum and the fourth fulcrum from the height adjusting plate 12 at the lowest end, and drawing out the height adjusting plate 12 at the lowest end and the connecting pin 15;
7) the input ends of the support are adjusted by controlling the height of the first fulcrum and the third fulcrum, so that the extending amount of the stud 2 is reduced, and the track plate 20 is lowered to the original position;
8) controlling the input ends of the height adjusting supports at the second fulcrum and the fourth fulcrum, increasing the extension amount of the stud 2, enabling the height adjusting supports at the second fulcrum and the fourth fulcrum to be in contact with the lower embedded steel plate 40.1, and enabling the height adjusting supports at the first fulcrum, the second fulcrum, the third fulcrum and the fourth fulcrum to jointly support the track plate;
9) then, fine adjustment is carried out by controlling the input end of the height adjusting support at each supporting point to achieve the adjustment amount required by each supporting point, and the locking eccentric nut 3 is screwed down;
10) finally, fixing the height adjusting support with the lower embedded steel plate 40.1 through bolts;
the adjustment method of the upper disk area is divided into two cases: the accumulated adjustment amount is less than or equal to 100mm and the accumulated adjustment amount is greater than 100 mm;
(1) when the accumulated adjustment amount is less than or equal to 100mm, firstly loosening the locking eccentric nut 3 to the uppermost end of the stud 2, directly controlling the input end of the height adjusting support at each fulcrum under the height adjusting module to reach the height adjusting amount required by each fulcrum, and then screwing down the locking eccentric nut 3;
(2) when the accumulated adjustment amount is greater than 100mm, the height of the track needs to be adjusted by controlling the input end of the height adjusting support at each fulcrum under the height adjusting module and increasing the height adjusting plate 12: the number of the height-adjusting plates 12 is determined according to a specific adjustment amount; the specific adjustment method is as follows:
1) loosening the locking eccentric nut 3 of the height adjusting support at each supporting point to the uppermost end of the stud 2;
2) loosening the bolts of the height adjusting supports and the lower embedded steel plates 40.1 at each supporting point;
3) controlling the input ends of the height adjusting supports at the second fulcrum and the fourth fulcrum, and completely retracting the stud 2 to separate the height adjusting supports at the second fulcrum and the fourth fulcrum from the lower embedded steel plate 40.1;
4) controlling the input ends of the height adjusting supports at the first fulcrum and the third fulcrum, increasing the extension amount of the stud 2, jacking the track plate 20 to a certain height, and enabling the height adjusting supports at the second fulcrum and the fourth fulcrum to be separated from the lower embedded steel plate 40.1 by more than 100 mm;
5) putting the height adjusting plate 12 and the connecting pin 15 under the height adjusting support at the second fulcrum and the fourth fulcrum, then controlling the input ends of the height adjusting support at the second fulcrum and the fourth fulcrum, increasing the extending amount of the stud 2, enabling the height adjusting support at the second fulcrum and the fourth fulcrum to be in contact with the newly put height adjusting plate 12, and enabling the height adjusting support at the first fulcrum, the second fulcrum, the third fulcrum and the fourth fulcrum to jointly support the track plate 20;
6) controlling the input ends of the height adjusting supports at the first fulcrum and the third fulcrum, and completely retracting the stud 2 to separate the height adjusting supports at the first fulcrum and the third fulcrum from the lower embedded steel plate by 40.1, wherein the separation height is more than 100 mm;
7) putting the height adjusting plate 12 and the connecting pin 15 under the height adjusting support at the first fulcrum and the third fulcrum, then controlling the input ends of the height adjusting support at the second fulcrum and the fourth fulcrum, completely retracting the stud 2, lowering the track plate 20 to the original position, contacting the height adjusting support at the first fulcrum and the third fulcrum with the newly-put height adjusting plate 12, and enabling the height adjusting support at the first fulcrum, the second fulcrum, the third fulcrum and the fourth fulcrum to jointly support the track plate 20;
8) the height adjusting support is connected with a newly-placed height adjusting plate 12 in a locking way through a clamping seat 13, a locking screw 14 and a nut;
9) then, fine adjustment is carried out by controlling the input end of the height adjusting support at each supporting point to achieve the adjustment quantity required by each supporting point, and the locking eccentric nut 3 is screwed down;
10) and finally, fixing the newly-placed heightening plate 12 and the lower embedded steel plate 40.1 through bolts.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (6)
1. The utility model provides a track traffic height adjustment support, includes hollow box (8), and box (8) set up on bottom of the case board (9), its characterized in that: a threaded sleeve (4) is arranged in the box body (8), a threaded stud (2) extending out of the box body (8) is arranged in the threaded sleeve (4), the upper end of the threaded stud (2) is fixedly connected with the support (1), a locking eccentric nut (3) with the lower end extending into the threaded sleeve (4) is arranged on the inner wall of the upper end of the threaded sleeve (4), and the contact surface of the threaded sleeve (4) and the locking eccentric nut (3) is a conical surface;
trapezoidal threads are arranged on the inner walls of the locking eccentric nut (3) and the threaded sleeve (4) and matched with the trapezoidal threads on the circumference of the stud (2), and the thread lead angle of the trapezoidal threads of the stud (2) is smaller than the equivalent friction angle;
the symmetric center line of the trapezoidal thread of the locking eccentric nut (3) is eccentric 0.5mm from the symmetric center line of the conical surface;
a guide post (7) is arranged in the stud (2), the guide post (7) is two integrally formed cylinders with different diameters, a small cylinder at the lower end is fixedly connected with a box bottom plate (9), a large cylinder at the upper end is in clearance fit with the inner wall of the stud (2), and a key groove is arranged on the circumference of the large cylinder;
the inner surface of the stud (2) is longitudinally provided with a strip-shaped guide notch which is matched with a key (10) in a key groove at the large-diameter end of the guide column (7);
a worm wheel (5) and a worm (6) which are meshed with each other are arranged between the threaded sleeve (4) and the inner wall of the box body (8), the worm wheel (5) is arranged on the circumference of the upper part of the threaded sleeve (4), and the expansion helical angle of the worm (6) is smaller than the friction angle of the worm wheel (5) and the worm (6) in contact;
the bottom of the box bottom plate (9) is provided with a plurality of heightening plates (12), the peripheries of two adjacent heightening plates (12) are connected through a U-shaped clamping seat (13), and the end parts of the clamping seats (13) are locked with the heightening plates (12) through locking screws (14).
2. The rail transit height-adjusting support according to claim 1, characterized in that: and bearing bushes (11) are arranged on the inner wall of the box body (8).
3. The rail transit height-adjusting support according to claim 1 or 2, wherein: the circumference of the locking eccentric nut (3) is provided with a rectangular notch convenient to mount.
4. The rail transit height-adjusting support according to claim 3, characterized in that: the bottom of the threaded sleeve (4) is provided with a wear-resisting plate (21), and the wear-resisting plate (21) is arranged on the box bottom plate (9).
5. The rail transit height adjusting support according to claim 4, wherein: the upper surface of the box bottom plate (9) is provided with a stainless steel plate (22), and the stainless steel plate (22) is attached to the wear-resisting plate (21).
6. The rail transit height-adjusting support according to claim 5, characterized in that: a corresponding groove is formed between every two adjacent heightening plates (12), a connecting pin (15) used for connecting the two adjacent heightening plates (12) is arranged in the groove, and the upper end of the connecting pin in the groove of the first heightening plate extends into an inner hole at the bottom of the guide column (7) through the box bottom plate (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120151113.7U CN215051645U (en) | 2021-01-20 | 2021-01-20 | Rail transit height adjustment support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120151113.7U CN215051645U (en) | 2021-01-20 | 2021-01-20 | Rail transit height adjustment support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215051645U true CN215051645U (en) | 2021-12-07 |
Family
ID=79251434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120151113.7U Active CN215051645U (en) | 2021-01-20 | 2021-01-20 | Rail transit height adjustment support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215051645U (en) |
-
2021
- 2021-01-20 CN CN202120151113.7U patent/CN215051645U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111648472B (en) | Assembled building beam column steel construction connecting elements | |
| CN202320242U (en) | Landing leg gap adjusting device and engineering machinery | |
| CN215051645U (en) | Rail transit height adjustment support | |
| CN112941981A (en) | Rail transit height adjusting support and using method | |
| CN215051644U (en) | Rail transit height adjustment support | |
| CN107812976A (en) | Low-loss the maching of Al wheel device effectively drops in one kind | |
| CN109267476B (en) | Sliding supporting device for bottom of support of bent and inclined bridge and transverse displacement adjusting method | |
| CN112941980A (en) | Height adjusting support for rail transit | |
| CN206940344U (en) | A kind of cold rolling mill hydraulic cylinder changing device | |
| CN204238148U (en) | Truncated cone-shaped adjustment height guardrail locking cap | |
| CN104452624A (en) | Truncated-cone-shaped height-adjustable guardrail fixing cap and application method thereof | |
| CN209910649U (en) | Dynamic inclination angle sensor | |
| CN209853576U (en) | Multi-direction adjustable track fixing device | |
| CN2653271Y (en) | Lifting platform for heavy load | |
| CN216238190U (en) | Culvert supports reinforcing apparatus | |
| CN106223641B (en) | A kind of the power direction adjusting apparatus and its installation and construction method of the translation of building integral-rotation | |
| CN217978053U (en) | Leveling mechanism of rotating equipment installation bedplate | |
| CN218927664U (en) | Ball mill shell assembly device | |
| CN215928863U (en) | Adjustable sizing block structure | |
| CN215092922U (en) | Vertical mill support | |
| CN218508681U (en) | Steel structure supporting beam for building | |
| CN215717510U (en) | Stabilize effectual steel construction workshop horizontal strutting arrangement | |
| CN219753030U (en) | Auxiliary safety device for hanging basket steel suspender | |
| CN218508231U (en) | Bridge supporting seat | |
| CN218341400U (en) | Building structure welding auxiliary fixtures |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |