CN218177225U

CN218177225U - Rack pin limit structure

Info

Publication number: CN218177225U
Application number: CN202222217622.2U
Authority: CN
Inventors: 高凯全; 张庆中; 王景亮; 汪世君; 郑少全; 付平安; 张慧萍
Original assignee: Zhengzhou Coal Mining Machinery Longwall Equipment Co ltd
Current assignee: Zhengzhou Coal Mining Machinery Longwall Equipment Co ltd
Priority date: 2022-08-23
Filing date: 2022-08-23
Publication date: 2022-12-30
Anticipated expiration: 2032-08-23

Abstract

The utility model discloses a rack round pin limit structure, including fixing the bent plate at baffle ledge top, fixed rack seat on the bent plate sets up the rack round pin that is used for being connected with the rack in the rack seat, set up the installation that supplies the rack round pin to insert the rack seat on the bent plate and dodge the hole, set up the baffle between bent plate and the rack round pin, the round pin cap and the bent plate butt of baffle and rack round pin. The utility model discloses a rack round pin limit structure carries on spacingly through the bent plate to the baffle, and then carries on spacingly to the round pin cap, and the rack seat also carries on spacingly to the round pin cap simultaneously for the axial removal can not take place for the rack round pin. And the baffle can reciprocate, simple to operate. Meanwhile, the replacement and installation of the rack pin are convenient.

Description

Rack pin limit structure

Technical Field

The utility model relates to a middle part groove technical field especially relates to a rack round pin limit structure.

Background

The middle trough is one of basic units formed by the structure of the scraper conveyor and is also a carrier and a channel for the operation of a coal mining machine. The coal mining machine is fixed above the middle groove of the scraper machine through the holding shoes and the sliding shoes. The sliding boots slide on the shovel plate, and the holding boots ride on the middle groove rack. Because the roller of the coal mining machine is provided with cutting teeth, the cutting teeth need to be penetrated into the coal wall, and the cutting teeth are fed to cut coal. In which the forces of the winning machine against the intermediate trough rack and the shovel plate are also great. The rack must therefore be firmly and reliably fixed.

The utility model discloses an applicant proposes in the coal-winning machine rack rail fixing device that 2011.08.23 provided, application number is 201120307043.6, proposes in this application to utilize the stop pin to stop the axial motion of tooth round pin axle. However, this application has the following disadvantages: (1) The stop pin and the toothed rail pin are vertically arranged, the stop pin is easy to deform after being stressed, fixing failure of the toothed rail pin is caused, and the toothed rail pin is not easy to take out after the stop pin deforms. (2) After the tooth rail seat is welded to the middle groove, one step of integral processing is needed to be added, the positioning hole of the pin shaft is processed, and the process is complex.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a be convenient for change the rack round pin with spacing rack round pin limit structure.

The specific scheme is as follows:

a rack pin limiting structure comprises a bent plate fixed at the top of a baffle ledge, a rack seat is fixed on the bent plate, a rack pin used for being connected with a rack is arranged in the rack seat, an installation avoiding hole for the rack pin to be inserted into the rack seat is formed in the bent plate, a baffle is arranged between the bent plate and the rack pin, and the baffle is abutted against a pin cap of the rack pin and the bent plate.

The installation avoidance hole is a concave hole, the middle part of the concave hole is a lower convex tongue plate, and a limiting device used for preventing the baffle from moving up and down is arranged between the lower convex tongue plate and the baffle.

The positioning part of the rack rail seat comprises a positioning surface provided with a mounting hole, and the positioning surface is a surface on the rack rail seat opposite to the bent plate; the mounting holes and the mounting avoidance holes are correspondingly arranged; two side plates are arranged between the positioning surface and the bent plate, one side of each side plate is arranged on the positioning surface, and the other side of each side plate is in contact with the bent plate; the baffle plate arranged between the two side plates is T-shaped, and the protruding position of the upper part of the baffle plate is located on the side plates.

The limiting device is a bayonet lock arranged on the baffle plate, and the bayonet lock penetrates through the baffle plate and is abutted against the bottom of the lower tongue plate.

The top parts of the two side plates are provided with cover plates, and two sides of each cover plate are respectively contacted with the positioning surface and the baffle.

The positioning part of the rack rail seat comprises a positioning surface provided with a mounting hole, and the positioning surface is the surface of the rack rail seat opposite to the bent plate; the bottom of the baffle is bent, a socket matched with the lower tongue plate is reserved at the bent part, and the socket is sleeved on the lower tongue plate from bottom to top.

The limiting device is a clamping pin arranged on the lower tongue plate, and the clamping pin penetrates through the lower tongue plate to be abutted against the bottom of the baffle.

The top of the pin cap is detachably provided with a convex block coaxial with the rack pin.

The projection is spliced by a plurality of mutually detachable projections.

The number of the mounting holes is at least two, wherein the mounting hole far away from the middle part of the ledge of the baffle is a long round hole; the mounting hole close to the middle part of the baffle ledge is a round hole.

The utility model discloses a cogged rail round pin limit structure carries on spacingly through the bent plate to the baffle, and then carries on spacingly to the round pin cap, and the cogged rail seat also carries on spacingly to the round pin cap simultaneously for the axial removal can not take place for the cogged rail round pin. And the baffle can reciprocate simple to operate. Meanwhile, the replacement and installation of the rack pin are convenient.

Drawings

FIG. 1 is a first schematic structural view of a baffle plate arranged from top to bottom;

FIG. 2 is a second schematic structural view of the baffle plate from top to bottom;

FIG. 3 is a third schematic structural view of the baffle plate from top to bottom;

FIG. 4 is an exploded view of FIG. 3;

FIG. 5 is a schematic view of the rack mount and rack pin mounting structure of FIG. 4;

FIG. 6 is a first structural view of a baffle arranged from bottom to top;

fig. 7 is an exploded view of fig. 6.

In the figure: the structure comprises a bent plate 1, a rack seat 2, a positioning surface 21, a side plate 22, a cover plate 23, a rack pin 3, a pin cap 31, a convex block 32, an installation avoiding hole 4, a lower convex tongue plate 41, a baffle plate 5, an upper part 51, a lower part 52, a socket 53 and a bayonet 6.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the implementations of the present invention, and not all implementations, and all other embodiments obtained by those skilled in the art without making creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.

As shown in fig. 1-7, the utility model discloses a rack round pin limit structure, including fixing the bent plate 1 at baffle ledge top, fixed rack seat 2 on the bent plate 1 sets up the rack round pin 3 that is used for being connected with the rack in the rack seat 2, its characterized in that, offer on the bent plate 1 and supply rack round pin 3 to insert the installation of rack seat 2 and dodge hole 4, set up baffle 5 between bent plate 1 and the rack round pin 3, baffle 5 and rack round pin 3's round pin cap 31 (here round pin cap 31 includes that the lug 32 on round pin cap 31 is fixed shown in fig. 4) and bent plate 1 butt. The bending plate 1 is an L-shaped plate, the bending plate 1 comprises a first bending body and a second bending body, and an angle exists between the first bending body and the second bending body, and the angle can be 90 degrees. The first curved body is fixed on 5 groove helps of baffle, and the second curved body carries on spacingly to baffle 5, and then carries on spacingly to round pin cap 31, and tooth rail seat 2 also carries on spacingly to round pin cap 31 simultaneously, and baffle 5 carries on spacingly with tooth rail seat 2 about the tooth rail round pin 3, and the left and right directions of tooth rail round pin 3 is the axial of tooth rail round pin 3 for axial removal can not take place for tooth rail round pin 3. And baffle 5 can reciprocate simple to operate. Meanwhile, the rack pin 3 is convenient to replace and install. At least one rack rail seat is arranged on the bent plate.

The installation avoiding hole 4 is a concave-shaped hole, the middle part of the concave-shaped hole is a lower tongue plate 41, and a limiting device used for preventing the baffle plate 5 from moving up and down is arranged between the lower tongue plate 41 and the baffle plate 5. After the baffle 5 is placed, the baffle 5 is limited to move in the vertical direction through a limiting device, the baffle 5 is prevented from deviating when the coal mining machine works, and the rack pin 3 is enabled to move axially.

The positioning part of the rack rail seat 2 comprises a positioning surface 21 provided with a mounting hole, and the positioning surface 21 is a surface of the rack rail seat 2 opposite to the bent plate 1; the mounting holes are arranged corresponding to the mounting avoidance holes 4; two side plates 22 are arranged between the positioning surface 21 and the bent plate 1, one side of each side plate 22 is arranged on the positioning surface 21, and the other side of each side plate 22 is in contact with the bent plate 1; the baffle 5 arranged between the two side plates 22 is in a T shape, and the protruding position of the upper part 51 of the baffle 5 is positioned on the side plates 22. The T-shaped baffle 5 is divided into an upper part 51 and a lower part 52, the width of the upper part 51 is larger than that of the lower part 52, the upper part 51 is placed on the two side plates 22 by means of gravity, and the two side plates 22 can limit the front and back directions of the baffle 5. The included angle between the bottom plane of the upper part 51 and the side wall of the lower part 52 is not an acute angle, and a concave part is arranged at the connecting part between the bottom plane and the side wall of the lower part 52, so that the baffle 5 can be conveniently placed.

The limiting device is a bayonet 6 arranged on the baffle plate 5, and the bayonet 6 penetrates through the baffle plate 5 and is abutted against the bottom of the lower tongue plate 41. The interaction between the detent 6 and the lower tongue 41 prevents the baffle 5 from being displaced upwards after placement, thereby allowing the rack pin 3 to move axially.

And cover plates 23 are arranged at the tops of the two side plates 22, and two sides of each cover plate 23 are respectively contacted with the positioning surfaces 21 and the baffle plates 5. The cover plate 23 is provided to prevent coal from entering the tooth rail seat 2.

The positioning part of the rack rail seat 2 comprises a positioning surface 21 provided with a mounting hole, and the positioning surface 21 is the surface of the rack rail seat 2 opposite to the bent plate 1; the bottom of the baffle 5 is bent, and a socket 53 matched with the lower tongue plate 41 is reserved at the bent part, and the socket 53 is sleeved on the lower tongue plate 41 from bottom to top. The installation avoiding holes 4 should be formed in the first bent body and the second bent body at the same time, and the length of the lower tongue plate 41 should be extended to facilitate installation of the baffle 5. The lower tongue plate 41 can limit the front and rear of the baffle 5, and avoids deviation in the front and rear direction. After the baffle 5 is placed on the lower tongue plate 41 from the insertion opening 53, a limiting device is installed, and the limiting device can play a supporting role for the baffle 5 and prevent the baffle 5 from falling from the lower tongue plate 41. And the installation and the dismantlement of baffle 5 all are located baffle ledge side, avoid going the one side that has the coal to drop in the cell body of middle part groove when changing, and is safer, convenient dismantlement and installation.

The limiting device is a bayonet lock 6 arranged on the lower tongue plate 41, and the bayonet lock 6 penetrates through the lower tongue plate 41 to abut against the bottom of the baffle plate 5. The interact between bayonet lock 6 and the baffle 5 bottom can avoid placing the back at baffle 5, takes place to drop, and then makes rack round pin 3 take place axial displacement.

The top of the pin cap 31 is detachably provided with a projection 32 coaxial with the rack pin 3. The projection 32 may be provided so that the pin cap 31 may abut against the baffle 5 via the projection 32 when there is a gap between the pin cap 31 and the baffle 5. Or the projection 32 may be provided in the clearance between the pin cap 31 and the baffle 5 in an interference fit manner.

The lug 32 is spliced by a plurality of mutually detachable convex bodies, and the combined structure of the convex bodies can refer to the connection relation between the building block with the application number of CN201780059872.7 and the building block combination, and can also be other prior arts. The thickness of the plurality of projections may also be different.

The number of the mounting holes is at least two, wherein the mounting holes far away from the middle part of the ledge of the baffle 5 are long round holes; the mounting hole close to the middle part of the ledge of the baffle 5 is a round hole. The arranged long round holes can facilitate deflection between the middle groove and the middle groove.

The installation process comprises the following steps: after the rack pin 3 is installed on the rack seat 2 through the installation avoiding hole 4, the baffle 5 is placed between the second bent body and the convex block 32 from top to bottom (or from bottom to top), and the baffle 5 is limited up or down through a limiting device.

When baffle 5 from top to bottom placed, the curb plate 22 of both sides is spacing to baffle 5 front and back direction, and curb plate 22 can support baffle 5 simultaneously to contained angle between 5 upper portion 51 bottom planes of baffle and the 52 lateral walls of lower part can be better support and spacing baffle 5 when being the obtuse angle. The stopper pin 6 passing through the baffle 5 and abutting against the bottom of the lower tongue 41 prevents the baffle 5 from moving upward.

When the baffle 5 is placed from bottom to top, the front and rear directions of the lower tongue plate 41 can be limited by the cooperation between the lower tongue plate 41 and the socket 53, and the baffle 5 can be supported by the bayonet pin 6 which penetrates through the lower tongue plate 41 and abuts against the bottom of the baffle 5.

The utility model discloses a rack round pin limit structure carries on spacingly through bent plate 1 to baffle 5, and then carries on spacingly to round pin cap 31, and rack seat 2 also carries on spacingly to round pin cap 31 simultaneously for axial removal can not take place for rack round pin 3. And baffle 5 can reciprocate simple to operate. Meanwhile, the rack pin 3 is convenient to replace and install. The lug 32 that sets up can guarantee the spacing of baffle 5 to round pin cap 31 when having the clearance between round pin cap 31 and baffle 5, and the slotted hole that sets up can make things convenient for and takes place to deflect between middle part groove and the middle part groove.

The technical means disclosed by the scheme of the present invention is not limited to the technical means disclosed by the above embodiments, but also includes the technical scheme formed by the arbitrary combination of the above technical features. It should be noted that modifications and embellishments may be made by those skilled in the art without departing from the principles of the present invention and are considered within the scope of the invention.

Claims

1. The utility model provides a rack round pin limit structure, is including fixing the bent plate at baffle ledge top, fixed rack rail seat on the bent plate, sets up the rack round pin that is used for being connected with the rack in the rack seat, its characterized in that, set up the installation that supplies the rack round pin to insert the rack seat on the bent plate and dodge the hole, set up the baffle between bent plate and the rack round pin, the pin cap and the bent plate butt of baffle and rack round pin.

2. The rack pin limiting structure according to claim 1, wherein the installation avoiding hole is a concave hole, a lower tongue plate is arranged in the middle of the concave hole, and a limiting device for preventing the baffle plate from moving up and down is arranged between the lower tongue plate and the baffle plate.

3. The rack pin limiting structure according to claim 2, wherein the positioning portion of the rack seat comprises a positioning surface provided with a mounting hole, and the positioning surface is a surface of the rack seat opposite to the bent plate; the mounting holes and the mounting avoidance holes are correspondingly arranged; two side plates are arranged between the positioning surface and the bent plate, one side of each side plate is arranged on the positioning surface, and the other side of each side plate is in contact with the bent plate; the baffle arranged between the two side plates is T-shaped, and the protruding position of the upper part of the baffle is located on the side plates.

4. The rack pin limiting structure according to claim 3, wherein the limiting device is a detent arranged on the baffle plate, and the detent passes through the baffle plate and abuts against the bottom of the lower tongue plate.

5. The rack pin limit structure as claimed in claim 4, wherein a cover plate is disposed on top of the two side plates, and two sides of the cover plate are respectively contacted with the positioning surface and the baffle plate.

6. The rack pin limiting structure according to claim 2, wherein the positioning portion of the rack seat comprises a positioning surface provided with a mounting hole, and the positioning surface is an opposite surface of the rack seat to the bent plate; the bottom of the baffle is bent, a socket matched with the lower tongue plate is reserved at the bent part, and the socket is sleeved on the lower tongue plate from bottom to top.

7. The rack pin limiting structure according to claim 6, wherein the limiting device is a detent arranged on the lower tongue plate, and the detent passes through the lower tongue plate and abuts against the bottom of the baffle plate.

8. The rack pin spacing structure of any one of claims 1-7, wherein said pin cap top is removably provided with a projection coaxial with the rack pin.

9. The rack pin spacing structure of claim 8, wherein said projection is formed by a plurality of mutually detachably engaging projections.

10. The rack pin limiting structure as claimed in any one of claims 3 to 6, wherein at least two mounting holes are provided, wherein the mounting hole far away from the middle of the ledge of the baffle is an oblong hole; the mounting hole close to the middle part of the baffle ledge is a round hole.