Pin shaft locking device for underground carry-scraper

Abstract

The utility model provides a pin shaft locking device for an underground carry-scraper, which comprises a cylindrical pin shaft, one end part of the pin shaft is provided with a first bulge, the first bulge is semi-cylindrical, the diameter of the first bulge is the same as that of the pin shaft, one side of the first bulge is provided with a locking plate, and the other side of the first bulge is provided with a fixing plate; the locking plate is provided with a plurality of first inserting holes, the fixing plate is provided with a plurality of second inserting holes, and the tightening bolts sequentially penetrate through the second inserting holes and the first inserting holes to be movably connected with the locking plate and the fixing plate. According to the utility model, the problems that in the prior art, a traditional pin shaft locking mode is adopted by a mine underground forklift, two connecting parts need to be processed in the traditional pin shaft locking mode, and the assembling and maintaining efficiency is low because the two connecting parts cannot be completely matched in the assembling process due to the processing precision problem can be solved; and the production efficiency and the maintenance efficiency of the underground carry-scraper can be improved, and the practicability is good.

Description

Technical Field

[0001] The utility model belongs to the technical field of production and maintenance of trackless scraper equipment in mines, and relates to a pin shaft locking device for underground scrapers. Background Art

[0002] With the continuous transformation and development of industry, equipment production, maintenance and warranty are becoming more and more important. The sustainable development of the mining industry and the construction of smart green mines have become the main direction of the development of the mining industry. The research and development of trackless equipment in mines is becoming more and more mature. In the existing technology, the traditional pin shaft locking method of underground shovel loaders in mines requires processing of both connected parties. Due to the problem of processing accuracy, the assembly process cannot be fully matched, resulting in low assembly and maintenance efficiency. In addition, in the daily production of trackless equipment, the traditional pin shaft locking method often causes production rework or assembly delays due to the position error of the processing surface. Utility Model Content

[0003] The purpose of the utility model is to provide a pin shaft locking device for an underground scraper to solve the problem of low assembly efficiency caused by insufficient machining accuracy of the pin shaft locking surface during the assembly of the underground scraper.

[0004] To this end, the utility model adopts the following technical solutions:

[0005] A pin locking device for an underground scraper comprises a cylindrical pin (4), one end of the pin (4) being provided with a first protrusion (4a), the first protrusion (4a) being semi-cylindrical and having a diameter the same as that of the pin (4), one side of the first protrusion (4a) being provided with a locking plate (3), and the other side of the first protrusion (4a) being provided with a fixing plate (5), the locking plate (3) being provided with a plurality of first plug holes (3a), the fixing plate (5) being provided with a plurality of second plug holes (5a), the tightening bolt (6) being passed through the second plug holes (5a) and the first plug holes (3a) in sequence, so as to realize a movable connection with the locking plate (3) and the fixing plate (5).

[0006] Furthermore, the locking plate (3) is square in shape, and a second protrusion (3b) is provided on its side, and the second protrusion (3b) is arc-shaped.

[0007] Furthermore, a semicircular groove (5b) is provided in the middle of the fixing plate (5), and the groove (5b) is exactly engaged and connected with the first protrusion (4a).

[0008] The beneficial effects of the utility model are:

[0009] The utility model can solve the problem that the traditional pin shaft locking method is adopted in the prior art for underground mine shovel loaders. Since the traditional pin shaft locking requires processing of both connected parties, the assembly process cannot be completely matched due to processing accuracy issues, resulting in low assembly and maintenance efficiency. The utility model does not require processing of the locking surface, can improve the production efficiency and maintenance efficiency of the underground mine shovel loaders, and has good practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the structure of the utility model;

[0011] Figure 2 It is a schematic diagram of the use process of the utility model.

[0012] In the figure, 1-lifting arm, 2-front vehicle body, 3-locking plate, 3a-first plug hole, 3b-second protrusion, 4-pin shaft, 4a-first protrusion, 5-fixing plate, 5a-second plug hole, 5b-groove, 6-tightening bolt. DETAILED DESCRIPTION

[0013] The technical solution of the utility model is described below in conjunction with the accompanying drawings and implementation methods.

[0014] like Figure 1 As shown, a pin shaft locking device for an underground scraper comprises a cylindrical pin shaft (4), one end of the pin shaft (4) is provided with a first protrusion (4a), the first protrusion (4a) is semi-cylindrical, and its diameter is the same as the diameter of the pin shaft (4).

[0015] A locking plate (3) is provided on one side of the first protrusion (4a), and a fixing plate (5) is provided on the other side. The locking plate (3) is provided with a plurality of first insertion holes (3a), and the fixing plate (5) is provided with a plurality of second insertion holes (5a). The tightening bolts (6) are passed through the second insertion holes (5a) and the first insertion holes (3a) in sequence to achieve a movable connection between the locking plate (3) and the fixing plate (5).

[0016] The locking plate (3) is square in shape, and a second protrusion (3b) is provided on its side, and the second protrusion (3b) is in the shape of an arc; specifically, the angle of the arc is 75-80 degrees.

[0017] A semicircular groove (5b) is provided in the middle of the fixing plate (5), and the groove (5b) is exactly engaged and connected with the first protrusion (4a).

[0018] In addition, the pin (4) is made of medium carbon quenched and tempered steel 40Cr and is heat treated.

[0019] like Figure 2As shown, the bottom of the lifting arm (1) of the underground scraper is hingedly connected to the front body (2), and the utility model is installed on the upper side of the front body (2). Specifically, first, the locking plate (3) is installed in cooperation with the pin shaft (4), and then the fixing plate (5) is installed in cooperation with the pin shaft (4). The fixing plate (5) and the front body (2) are fixedly connected by welding. The locking plate (3) and the fixing plate (5) limit the rotation of the pin shaft (4), thereby limiting the rotation of the pin shaft (4) when the lifting arm (1) and the front body (2) rotate relative to each other. The utility model can effectively solve the problem that the production progress of the scraper is delayed and the maintenance is difficult due to the restriction of the processing accuracy factor of the traditional scraper pin shaft locking.

Claims

1. A pin locking device for an underground scraper, characterized in that: It comprises a cylindrical pin shaft (4), one end of the pin shaft (4) is provided with a first protrusion (4a), the first protrusion (4a) is semi-cylindrical, and its diameter is the same as the diameter of the pin shaft (4), one side of the first protrusion (4a) is provided with a locking plate (3), and the other side is provided with a fixing plate (5), the locking plate (3) is provided with a plurality of first plug holes (3a), and the fixing plate (5) is provided with a plurality of second plug holes (5a); It also includes a tightening bolt (6), which passes through the second insertion hole (5a) and the first insertion hole (3a) in sequence to achieve a movable connection with the locking plate (3) and the fixing plate (5).

2. The pin locking device for an underground scraper according to claim 1, characterized in that: The locking plate (3) is square in shape, and a second protrusion (3b) is provided on its side, wherein the second protrusion (3b) is arc-shaped.

3. The pin locking device for an underground scraper according to claim 2, characterized in that: The arc angle of the second protrusion (3b) is 75-80 degrees.

4. The pin locking device for an underground scraper according to claim 1, characterized in that: A semicircular groove (5b) is provided in the middle of the fixing plate (5), and the groove (5b) is exactly engaged and connected with the first protrusion (4a).

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