CN215793795U - Floating wedge block device - Google Patents
Floating wedge block device Download PDFInfo
- Publication number
- CN215793795U CN215793795U CN202120020542.0U CN202120020542U CN215793795U CN 215793795 U CN215793795 U CN 215793795U CN 202120020542 U CN202120020542 U CN 202120020542U CN 215793795 U CN215793795 U CN 215793795U
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- wedge block
- wedge
- fixing base
- floating
- pin
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Abstract
The utility model provides a floating voussoir blocking device, adopts the stop gear of floating voussoir, uses the contact of wedge face, can fix the slide in accurate position during voussoir operating condition, does not produce and slides, when the voussoir is out of work, can descend to the locking position, does not hinder the slide and pass through, and slide or mechanism position are injectd to the accuracy, have promoted the stability of operation equipment to can with the interactive signal of electrical system, so as to avoid the maloperation, have advantages such as manufacturing and maintenance cost are low.
Description
Technical Field
The utility model relates to the field of machinery, in particular to a rail transit vehicle technology, specifically relates to a pressing sleeve device for a rail transit vehicle brake accessory, and particularly relates to a floating wedge block device.
Background
The conventional common rail transit vehicle brake fittings use a pneumatic guide rail clamp to fix a sliding plate, when the sliding plate is suddenly acted by an external force, the guide rail clamp cannot completely fix the sliding plate, the sliding plate has a release phenomenon, and the clamping force is insufficient and the sliding plate cannot be subjected to impact load; external force can be transmitted to the servo driving mechanism, so that the servo driving mechanism is easily damaged; the position of the sliding plate cannot be accurately positioned; thereby reducing the service life of each mechanism and causing the defects that the equipment can not work stably for a long time and can not be positioned accurately, and the like.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects in the prior art and provide a blocking mechanism adopting floating type wedge blocks, which uses wedge surface contact, can fix a sliding plate at a precise position without sliding when the wedge blocks are in a working state, and can descend to a locking position without blocking the sliding plate when the wedge blocks do not work.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a floating wedge block device comprises a sliding plate, a wedge block fixing base, a wedge block and an upper wedge block, wherein the upper wedge block is installed on the side surface of the sliding plate, a cavity for accommodating the wedge block is arranged in the wedge block fixing base, the top of the cavity is provided with a guide hole, the side surface of the cavity is provided with a vertical guide groove, the side surface of the wedge block facing the guide groove is provided with a positioning pin, the other side of the wedge block is provided with a positioning hole, the positioning pin extends into the guide groove to prevent the wedge block from falling off the wedge block fixing base when moving up and down, the wedge block fixing base is provided with an elastic indexing pin at the position corresponding to the positioning hole, the front end of the elastic indexing pin penetrates through the side wall of the wedge block fixing base and is inserted into the positioning hole to lock the wedge block at a low position, the bottom of the wedge block is provided with a compression spring, and when the elastic indexing pin is separated from the positioning hole, the compression spring has the elastic force effect that the wedge block is ejected out of the wedge block fixing base through the guide hole and is attached to the upper wedge block, and the attaching surfaces of the wedge block and the upper wedge block are inclined surfaces.
Furthermore, the inclined plane angle of the wedge block binding surface and the upper wedge block binding surface is smaller than the mechanical self-locking angle.
Further, the wedge block is a square wedge block, and the guide hole is a square guide hole.
Furthermore, a proximity switch is arranged on the outer side of the wedge block fixing base corresponding to the position of the positioning pin, and the installation height of the proximity switch is consistent with the height of the positioning pin when the wedge block is at a low position.
Compared with the prior art, the utility model has the advantages of positive and obvious effect, accurate limitation of the position of the sliding plate or the mechanism, improvement of the stability of the operation equipment, signal interaction with an electric control system to avoid misoperation, low manufacturing and maintenance cost and the like.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a top view of the present invention.
Figure 3 is a side view of the wedge in the wedge operating condition of the present invention.
Detailed Description
Example (b):
as shown in fig. 1, 2 and 3, a floating wedge block device comprises a sliding plate 2, a wedge fixing base 1, a wedge 3 and an upper wedge 8, wherein the upper wedge 8 is mounted on a side surface of the sliding plate 2, a cavity for accommodating the wedge 3 is arranged in the wedge fixing base 1, a guide hole 12 is arranged at the top of the cavity, a vertical guide groove 4 is arranged on a side surface of the cavity, a positioning pin 5 is arranged on a side surface of the wedge 3 facing the guide groove 4, a positioning hole 6 is arranged on the other side of the wedge 3, the positioning pin 5 extends into the guide groove 4 to prevent the wedge 3 from being separated from the wedge fixing base 1 when moving up and down, an elastic index pin 11 is arranged on the wedge fixing base 1 at a position corresponding to the positioning hole 6, the front end of the elastic index pin 11 penetrates through a side wall of the wedge fixing base and is inserted into the positioning hole 6, the wedge block 3 is locked at a low position, concave-convex structures at the front end of the elastic indexing pin 11 and the positioning hole 6 can be mutually embedded to realize locking, a compression spring 7 is installed at the bottom of the wedge block 3, when the elastic indexing pin 11 is separated from the positioning hole 6, the wedge block 3 is ejected out of the wedge block fixing base 1 through the guide hole 12 and is attached to the upper wedge block 8 under the elastic action of the compression spring 7, the attachment surfaces of the wedge block 3 and the upper wedge block 8 are inclined surfaces, after the wedge block 3 is manually pressed down, the wedge block 3 is automatically clamped by the elastic indexing pin 11, the sliding plate 2 can freely move, and after the elastic indexing pin 11 is manually pulled out, the wedge block 3 automatically pops up under the action of the compression spring 7 and contacts with the upper wedge block 8 to block the sliding plate 2 from displacing.
Further, as shown in fig. 1 and 3, an inclined plane angle between the wedge block attachment surface 10 and the upper wedge block attachment surface is smaller than a mechanical self-locking angle, so that the wedge block attachment surface has a self-locking effect.
Further, as shown in fig. 1 and 2, the wedge 3 is a square wedge and the guide hole 12 is a square guide hole, the square wedge 3 is installed in the wedge fixing base 1, and the square wedge 3 can be guided by the square guide hole 12 with a matching tolerance, so that the square wedge 3 does not shake during the lifting movement in the wedge fixing base 1.
Further, as shown in fig. 1, a proximity switch 9 is arranged on the outer side of the wedge block fixing base 1 corresponding to the position of the positioning pin 5, the installation height of the proximity switch 9 is consistent with the height of the positioning pin 5 when the wedge block 3 is at a low position, when the wedge block 3 is pressed down to a locking position, the positioning pin 5 can trigger the proximity switch 9 to signal the electronic control system, the electronic control system can control the sliding plate 2 to restore to move, when the wedge block 3 leaves the locking position, the positioning pin 5 can trigger the proximity switch 9 to signal the electronic control system, and the electronic control system can control the sliding plate 2 to exit from a normal moving state.
Claims (4)
1. A floating wedge block device comprises a sliding plate, a wedge block fixing base and is characterized by further comprising a wedge block and an upper wedge block, wherein the upper wedge block is installed on the side face of the sliding plate, a cavity for accommodating the wedge block is arranged in the wedge block fixing base, a guide hole is formed in the top of the cavity, a guide groove in the vertical direction is formed in the side face of the cavity, a positioning pin is arranged on the side face of the wedge block facing the guide groove, a positioning hole is formed in the other side of the wedge block, the positioning pin extends into the guide groove, an elastic indexing pin is arranged on the wedge block fixing base in a position corresponding to the positioning hole, the front end of the elastic indexing pin penetrates through the side wall of the wedge block fixing base and is inserted into the positioning hole to lock the wedge block at a low position, a compression spring is installed at the bottom of the wedge block, and when the elastic indexing pin is separated from the positioning hole, the compression spring ejects the wedge block out of the wedge block fixing base through the guide hole and is attached to the upper wedge block, and the attaching surfaces of the wedge block and the upper wedge block are inclined surfaces.
2. A floating wedge stop as claimed in claim 1, wherein the angle of the slope of the wedge abutment surface and the upper wedge abutment surface is less than the mechanical self-locking angle.
3. A floating wedge block as claimed in claim 1, wherein said wedge is a square wedge and said guide hole is a square guide hole.
4. A floating wedge block as claimed in claim 1, wherein a proximity switch is provided on the outside of the wedge mount base corresponding to the location of said locating pin, said proximity switch being mounted at a height corresponding to the height of said locating pin when said wedge is in the lowered position.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2020111894427 | 2020-10-30 | ||
| CN202011189442.7A CN112172861A (en) | 2020-10-30 | 2020-10-30 | Floating voussoir blocking device |
| CN202022465003 | 2020-10-30 | ||
| CN2020224650036 | 2020-10-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215793795U true CN215793795U (en) | 2022-02-11 |
Family
ID=75413142
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120020542.0U Active CN215793795U (en) | 2020-10-30 | 2021-01-06 | Floating wedge block device |
| CN202110011535.9A Pending CN112660198A (en) | 2020-10-30 | 2021-01-06 | Floating voussoir blocking device |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110011535.9A Pending CN112660198A (en) | 2020-10-30 | 2021-01-06 | Floating voussoir blocking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN215793795U (en) |
-
2021
- 2021-01-06 CN CN202120020542.0U patent/CN215793795U/en active Active
- 2021-01-06 CN CN202110011535.9A patent/CN112660198A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CN112660198A (en) | 2021-04-16 |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |