Split type rack for hard rock heading machine

Abstract

The utility model discloses a split type frame for a hard rock heading machine, which comprises an upper frame body, a lower frame body and a rear frame body, the upper frame body is arranged above the lower frame body, and the rear ends of the upper frame body and the lower frame body are connected with the rear frame body. The upper frame body and the lower frame body are connected through a plurality of bolts and nuts, the upper frame body and the rear frame body are connected through a plurality of bolts and nuts, the bolts are sleeved with lock washers, and the nuts are located on one sides of the lock washers; the upper frame body and the lower frame body are connected through a plurality of round keys and positioning pin shafts, the lower frame body and the rear frame body are connected through a plurality of round keys, and connecting clamping blocks are arranged on the two sides of the lower frame body and the two sides of the rear frame body. The requirement of using a large-scale hard rock heading machine in a coal mine is met.

Description

Technical Field

[0001] The utility model relates to the technical field of cantilever hard rock roadheaders for coal mines, and specifically relates to a split-type frame for a hard rock roadheader. Background Art

[0002] In the field of hard rock roadheaders, the frame is an important component for the hard rock roadheader to bear loads, and is an important component for bearing various loads from cutting, traveling, loading and transporting. The traditional roadheader frame is an integral welded structure, which occupies the largest volume and weight in the hard rock roadheader. In the actual application field, some old coal mines plan to upgrade their production capacity and prepare to use large hard rock roadheaders. However, due to the outdated hoist cages supporting the coal mines, there are problems such as too small downhole dimensions and insufficient load-bearing capacity, and it is impossible to meet the integrated downhole of the large hard rock roadheader frame. Content of the Utility Model

[0003] The purpose of the utility model is to provide a split-type frame for a hard rock roadheader, which meets the transportation size and weight requirements of small hoist cages in coal mines, and is assembled after being lowered into the well to meet the needs of using large hard rock roadheaders in coal mines.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0005] The utility model discloses a split-type frame for a hard rock roadheader, which includes an upper frame body, a lower frame body and a rear frame body. The upper frame body is installed above the lower frame body, and the rear ends of the upper frame body and the lower frame body are connected to the rear frame body. Between the upper frame body and the lower frame body, between the upper frame body and the rear frame body, and between the lower frame body and the rear frame body are all connected by a plurality of bolts and nuts. A lock washer is sleeved on the bolt, and the nut is located on one side of the lock washer; between the upper frame body and the lower frame body is also connected by a plurality of round keys and positioning pins, between the lower frame body and the rear frame body is connected by a plurality of round keys, and coupling blocks are provided on both sides of the lower frame body and the rear frame body.

[0006] Further, bolts, lock washers and nuts are installed at the edges of both ends of the upper frame body and the lower frame body; bolts, lock washers and nuts are installed at the connecting edges of the upper frame body and the rear frame body, and bolts, lock washers and nuts are installed at the connecting edges of the lower frame body and the rear frame body.

[0007] Further, two first round keys are installed at the front end of the edge of the upper frame body and the lower frame body, and two second round keys are installed on both sides of the lower frame body and the rear frame body.

[0008] Further, two positioning pins are installed at the edge of the upper frame body and the lower frame body, and the positioning pins are located between the first round key and the rear frame body.

[0009] Further, the coupling block includes two clamping plates and a clamping plate connecting plate. The clamping plate connecting plate is perpendicular to both clamping plates. Two connecting holes and one positioning hole are provided on each of the two clamping plates. The positioning hole is located in the middle of the two connecting holes. One clamping plate is located on one side of the lower frame body, and the other clamping plate is located on one side of the rear frame body.

[0010] The beneficial effects of the present utility model are as follows:

[0011] The present utility model uses bolts and nuts, positioning pins, circular keys, and coupling blocks to connect the upper frame body, lower frame body, and rear frame body. Bolts and nuts are traditional connection and fixing methods. The connection structure is simple, convenient for installation and disassembly, and easy to replace when damaged. However, the frame is an important component for the hard rock roadheader to bear loads. It bears various loads from cutting, walking, and loading and unloading. If only bolts and nuts are used for connection, the bolts need to bear shear force and tensile force, which will greatly reduce the service life of the bolts and easily cause situations such as bolt fracture. Therefore, the present utility model uses positioning pins and circular keys to bear the shear force from the lower frame body and the rear frame body; at the same time, the positioning pins and circular keys have the function of installation and positioning. The coupling block can reduce the tensile force borne by the connecting bolts, ensure the stable installation structure of the lower frame body and the rear frame body, and improve the service life of the bolts. Description of the Drawings

[0012] The following further details the present utility model in conjunction with the drawings and specific embodiments.

[0013] Figure 1 This is the front view of the present utility model.

[0014] Figure 2 This is the top view of the present utility model.

[0015] Figure 3 This is the schematic diagram of the coupling block of the present utility model. Specific Embodiments

[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Usually, the components of the embodiments of the present utility model described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present utility model provided in the drawings is not intended to limit the scope of the present utility model to be protected, but only represents the selected embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present utility model.

[0017] As shown in the figure, the present utility model discloses a split-type frame for a hard rock tunneling machine, which includes an upper frame body 1, a lower frame body 4 and a rear frame body 10. The upper frame body 1 is installed above the lower frame body 4, and the rear ends of the upper frame body 1 and the lower frame body 4 are connected to the rear frame body 10. Between the upper frame body 1 and the lower frame body 4, between the upper frame body 1 and the rear frame body 10, and between the lower frame body 4 and the rear frame body 10, they are all connected by a plurality of bolts 7 and nuts 5. A lock washer 6 is sleeved on the bolt 5, and the nut 5 is located on one side of the lock washer 6; between the upper frame body 1 and the lower frame body 4, they are also connected by a plurality of round keys and positioning pins 3. Between the lower frame body 4 and the rear frame body 10, they are connected by a plurality of round keys. The round keys include round key one 2 and round key two 9. Connecting blocks 8 are provided on both sides of the lower frame body 4 and the rear frame body 10. The present utility model splits the frame into three parts, making the parts smaller, meeting the transportation size and weight requirements of small coal mine hoist cages, and being assembled after being lowered into the well, meeting the needs of using large hard rock tunneling machines in coal mines.

[0018] After the upper frame body 1, the lower frame body 4, and the rear frame body 10 are connected, under the action of their own gravity, the bolt 7 needs to bear a great shear force тp and tensile force σs. The shear force тp and tensile force σs have a great destructive effect on the bolt 7. Therefore, in order to reduce the shear force тp and tensile force σs borne by the bolt 7, the present utility model adds round keys, positioning pins 3 and connecting blocks 8.

[0019] In an embodiment of the present utility model, bolts 7, lock washers 6 and nuts 5 are installed at the edges of both ends of the upper frame body 1 and the lower frame body 4; bolts 7, lock washers 6 and nuts 5 are installed at the connecting edges of the upper frame body 1 and the rear frame body 10, and bolts 7, lock washers 6 and nuts 5 are installed at the connecting edges of the lower frame body 4 and the rear frame body 10. The bolt 7 can bear large tensile stress and compressive stress, and the nut and the lock washer provide pre-tightening force and anti-loosening measures. The bolt-nut connection is a common fixed connection method, which has the advantages of simple structure, convenient installation and disassembly, and easy replacement after damage.

[0020] In an embodiment of the present utility model, two round key ones 2 are installed at the front ends of the edges of the upper frame body 1 and the lower frame body 4, and two round key twos 9 are installed on both sides of the lower frame body 4 and the rear frame body 10.

[0021] In an embodiment of the present utility model, two positioning pins 3 are installed at the edges of the upper frame body 1 and the lower frame body 4. The positioning pins 3 are located between the round key one 2 and the rear frame body 10. The round key one 2, the round key two 9 and the positioning pins 3 can greatly bear the shear force тp in the upper and lower directions generated by the upper frame body 1, the lower frame body 4 and the rear frame body 10.

[0022] In an embodiment of the present utility model, the connecting block 8 includes two clamping plates 81 and a clamping plate connecting plate 82. The clamping plate connecting plate 82 is perpendicularly arranged with both of the two clamping plates 81. Two connecting holes 83 and one positioning hole 84 are provided on each of the two clamping plates 81. The positioning hole 84 is located in the middle of the two connecting holes 83. One clamping plate is located on one side of the lower frame body 4, and the other clamping plate is located on one side of the rear frame body 10. The U-shaped structure of the connecting block 8 defines and fixes the positions of the lower frame body 4 and the rear frame body 10. The connecting block can offset most of the left-right direction tensile force σs generated by the lower frame body 4 and the rear frame body 10.

[0023] The above description is only the preferred embodiment of the present utility model and is not intended to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A split-type frame for a hard rock tunneling machine, characterized in that, It includes an upper frame body, a lower frame body and a rear frame body. The upper frame body is installed above the lower frame body. The rear ends of the upper frame body and the lower frame body are connected to the rear frame body. Between the upper frame body and the lower frame body, between the upper frame body and the rear frame body, and between the lower frame body and the rear frame body, they are all connected by a number of bolts and nuts. A lock washer is sleeved on the bolt, and the nut is located on one side of the lock washer; between the upper frame body and the lower frame body, they are also connected by a number of round keys and positioning pin shafts. Between the lower frame body and the rear frame body, they are connected by a number of round keys. Connection blocks are provided on both sides of the lower frame body and the rear frame body.

2. The split-type frame for a hard rock tunneling machine according to claim 1, characterized in that, Bolts, lock washers and nuts are installed at the edges of both ends of the upper frame body and the lower frame body; bolts, lock washers and nuts are installed at the edges where the upper frame body and the rear frame body are connected, and bolts, lock washers and nuts are installed at the edges where the lower frame body and the rear frame body are connected.

3. The split-type frame for a hard rock tunneling machine according to claim 2, wherein, Two first round keys are installed at the front end of the edge of the upper frame body and the lower frame body, and two second round keys are installed on both sides of the lower frame body and the rear frame body.

4. The split-type frame for a hard rock tunneling machine according to claim 3, wherein, Two positioning pin shafts are installed at the edge of the upper frame body and the lower frame body, and the positioning pin shafts are located between the first round key and the rear frame body.

5. The split-type frame for a hard rock tunneling machine according to claim 1, characterized in that, The connection block includes two card plates and a card plate connecting plate. The card plate connecting plate is perpendicular to both card plates. Two connection holes and one positioning hole are provided on both card plates. The positioning hole is located in the middle of the two connection holes. One card plate is located on one side of the lower frame body, and the other card plate is located on one side of the rear frame body.

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