Cutting head protection equipment for coal mining tunneling

Abstract

The utility model discloses cutting head protection equipment for coal mining tunneling, which comprises a shell, and one side of the outer surface of the shell is fixedly connected with a mounting sleeve; a hydraulic pushing assembly is jointly installed between the shell and the installation sleeve, a plurality of connecting rod assemblies are installed at the movable end of the hydraulic pushing assembly, long rods are fixedly installed at the other ends of the connecting rod assemblies, and a flexible protection part is jointly and fixedly installed between every two adjacent long rods. According to the cutting head, through the arrangement of the hydraulic pushing assembly, the connecting rod assembly, the long rod, the flexible protection piece, the fixing ring and the mounting groove, when the cutting head is not used, the long rod is contracted to wrap the cutting head for protection, when the cutting head is used, the long rod and the flexible protection piece are unfolded, broken stones and coal briquettes which are crashed and fallen by collision can be blocked, and the cutting head is protected. Two protection structures are combined into a whole, the occupied space is small, a long installation sleeve does not need to be designed, and the protection device can be additionally installed on an existing heading machine to be used.

Description

Technical Field

[0001] The utility model relates to the technical field of tunneling machines, in particular to a cutting head protection device for coal mining and tunneling. Background Art

[0002] A roadheader is a mechanical device used for underground mining, which can perform excavation and support operations in underground mines. The roadheader is mainly composed of a cutting head, a bucket, a transmission system, a hydraulic system, and an electrical control system. The roadheader excavates with its cutting head, and then uses the bucket to load the mined ore and transport it to the ground.

[0003] At present, the collision between the cutting head and the coal mine will cause the flying of broken stones and coal blocks, and the direction of the flying broken stones and coal blocks cannot be controlled and may fly towards the driver. The cutting head protection equipment can prevent the broken stones and coal blocks from flying towards the driver, thereby protecting the driver and increasing the safety of the use of the tunnel boring machine.

[0004] The prior art publication number is CN216691076U, which is a cutting head protection device for a coal mining and tunneling machine, including a driving member, a horizontal driving rod fixedly connected to the output end of the driving member, a shell provided on the left side of the driving rod, an opening provided on the left side wall of the shell, a cutting head provided inside the shell, a through hole provided in the middle of the right side wall of the shell, the left end of the driving rod passes through the through hole and is fixedly connected to the middle of the right end of the cutting head, and hydraulic cylinders are fixedly provided on both upper and lower sides of the outer wall of the driving member. During tunneling, the utility model can easily block the flying stones and coal blocks caused by the collision between the cutting head and the coal mine, thereby reducing the possibility of workers and tunneling machine equipment being injured by the flying stones and coal blocks; when not tunneling, it is convenient to protect the cutting head, and the cutting head is not easy to collide with objects or workers.

[0005] However, two protective structures (shell and moving mechanism and protective cloth and unfolding mechanism) are arranged in front and behind. Although the two can be linked, the setting of these two protective structures will undoubtedly occupy a large space on the cutting head mounting sleeve. Therefore, a longer mounting sleeve needs to be designed, which makes it impossible to install and use it on the existing tunneling machine. Utility Model Content

[0006] The utility model is a cutting head protection device for coal mining and excavation, which is proposed to solve the shortcomings in the prior art.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a cutting head protection device for coal mining and excavation, comprising a shell, a mounting sleeve is fixedly connected to one side of the outer surface of the shell; a hydraulic push assembly is installed between the shell and the mounting sleeve, a plurality of connecting rod assemblies are installed at the movable end of the hydraulic push assembly, a long rod is fixedly installed at the other end of the plurality of connecting rod assemblies, and a flexible protective member is fixedly installed between two adjacent long rods; a fixing ring is fixedly sleeved on one side of the outer surface of the mounting sleeve, a plurality of mounting grooves are evenly opened on the edge of the fixing ring, and the mounting grooves are connected to adjacent long rods.

[0008] Furthermore, the hydraulic pushing assembly includes two hydraulic telescopic rods, and the hydraulic telescopic rods are symmetrically fixed on the outer walls of both sides of the shell. The movable ends of the two hydraulic telescopic rods are commonly fixedly connected with an annular push plate, and the annular push plate is slidably sleeved on the outer surface of the mounting sleeve. The two hydraulic telescopic rods cooperate to push the annular push plate to move.

[0009] Furthermore, multiple connecting rod assemblies all include a first connecting seat, and the first connecting seat is fixedly connected to the annular push plate, the inner walls on both sides of the first connecting seat are rotatably connected to the connecting rod body, the outer walls on both sides of the connecting rod body are rotatably connected to the second connecting seat, and the second connecting seat is fixedly connected to the adjacent long rod, and the setting of the first connecting seat and the second connecting seat is conducive to the rotatable connection between the connecting rod body, the long rod and the annular push plate.

[0010] Furthermore, a cutting head is rotatably mounted on the other end of the mounting sleeve, and a fixing ring is located between the cutting head and the hydraulic driving assembly. The cutting head utilizes cutting teeth to crush coal and rock.

[0011] Furthermore, the plurality of long rods are rotatably connected to the inner walls on both sides of adjacent installation grooves. The installation grooves support the long rods, which is beneficial to the installation of the long rods and also beneficial to the swinging of the long rods with the installation grooves as the center point.

[0012] Furthermore, the plurality of flexible protective members are all made of protective nets, and the protective nets have holes, which are conducive to observing the position of the cutting head.

[0013] Furthermore, the annular push plate adopts a hollow design to reduce manufacturing materials and reduce the manufacturing cost of the annular push plate.

[0014] Beneficial effects of the utility model:

[0015] When the utility model is in use, the cutting head protection device for coal mining and tunneling, through the arranged hydraulic pushing assembly, connecting rod assembly, long rod, flexible protective part, fixing ring and installation groove, when the cutting head is not in use, the long rod shrinks to wrap it inside for protection, and when the cutting head is in use, the long rod and the flexible protective part unfold, which can block the broken stones and coal blocks that collide and fly, and the two protection structures are combined into one, which occupies less space and does not need to design a longer installation sleeve, and can be installed on the existing tunneling machine for use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the description of the specific implementation methods will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 : The overall first-view structural diagram of the utility model;

[0018] Figure 2 : Structural diagram of the connecting rod assembly of the utility model;

[0019] Figure 3 : The overall second viewing angle structural diagram of the utility model.

[0020] Figure 4 :The utility model Figure 3 Enlarged view of point A in the middle.

[0021] The reference numerals are as follows:

[0022] 1. Shell; 2. Hydraulic telescopic rod; 3. Mounting sleeve; 4. Annular push plate; 5. Connecting rod body; 6. Long rod; 7. Flexible protective part; 8. Cutting head; 9. Second connecting seat; 10. First connecting seat; 11. Fixed ring; 12. Mounting groove. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] like Figures 1 to 4 As shown, it relates to a cutting head protection device for coal mining and excavation, including a shell 1, and a mounting sleeve 3 is fixedly connected to one side of the outer surface of the shell 1.

[0025] A hydraulic pushing assembly is installed between the shell 1 and the mounting sleeve 3. The hydraulic pushing assembly includes two hydraulic telescopic rods 2, and the hydraulic telescopic rods 2 are symmetrically fixedly installed on the outer walls of both sides of the shell 1. The movable ends of the two hydraulic telescopic rods 2 are fixedly connected with an annular push plate 4, and the annular push plate 4 is slidably sleeved on the outer surface of the mounting sleeve 3. The annular push plate 4 adopts a hollow design. When the hydraulic telescopic rod 2 is started, the annular push plate 4 can be pushed forward or backward. At the same time, the annular push plate 4 adopts a hollow design, which can save manufacturing costs.

[0026] A plurality of connecting rod assemblies are installed at the movable end of the hydraulic pushing assembly, and a long rod 6 is fixedly installed at the other end of the plurality of connecting rod assemblies, and a flexible protective member 7 is fixedly installed between two adjacent long rods 6. The plurality of flexible protective members 7 are all made of protective nets. After the plurality of long rods 7 are unfolded, the protective nets are also unfolded, which has the effect of shielding and protecting. The plurality of connecting rod assemblies include a first connecting seat 10, and the first connecting seat 10 is fixedly connected to the annular push plate 4. The inner walls on both sides of the first connecting seat 10 are rotatably connected to a connecting rod body 5, and the outer walls on both sides of the connecting rod body 5 are rotatably connected to a second connecting seat 9, and the second connecting seat 9 is fixedly connected to the adjacent long rods 6. The setting of the first connecting seat 10 is conducive to the rotational connection between the connecting rod body 5 and the annular push plate 4, and the setting of the second connecting seat 9 is conducive to the rotational connection between the connecting rod body 5 and the long rod 6.

[0027] A fixing ring 11 is fixedly sleeved on one side of the outer surface of the mounting sleeve 3, and a plurality of mounting grooves 12 are evenly arranged on the edge of the fixing ring 11. The mounting grooves 12 are connected to adjacent long rods 6, and the plurality of long rods 6 are rotatably connected to the inner walls on both sides of the adjacent mounting grooves 12. When the connecting rod assembly pushes the long rod 6 to move, the long rod 6 swings with the mounting groove 12 and its rotatable connection as the center point.

[0028] The other end of the mounting sleeve 3 is rotatably mounted with a cutting head 8, and a fixing ring 11 is located between the cutting head 8 and the hydraulic pushing assembly.

[0029] Working principle: The two hydraulic telescopic rods 2 are controlled by an external hydraulic control device to operate synchronously. When the cutting head 8 is not in use, the two hydraulic telescopic rods 2 push the annular push plate 4 close to the fixed ring 11, and the annular push plate 4 drives the first connecting seat 10 to move. The first connecting seat 10 pushes one end of the long rod 6 to move through the connecting rod body 5 and the second connecting seat 9. The long rod 6 swings with its rotation connection with the mounting groove 12 as the center point until multiple long rods 6 are in a horizontal state. The long rod 6 cooperates with the flexible protective member 7 to protect the unused cutting head 8. When the cutting head 8 is in use, the two hydraulic telescopic rods 2 push the annular push plate 4 away from the fixed ring 11. The annular push plate 4 drives one end of the long rod 6 to move through the connecting rod assembly. The long rod 6 swings with its rotation connection with the mounting groove 12 as the center point until multiple long rods 6 are in a vertical or nearly vertical state. The long rod 6 cooperates with the flexible protective member 7 to block the colliding and flying gravel and coal blocks.

[0030] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A cutting head protection device for coal mining and excavation, comprising a housing (1), characterized in that: A mounting sleeve (3) is fixedly connected to one side of the outer surface of the housing (1); A hydraulic push assembly is installed between the housing (1) and the mounting sleeve (3); a plurality of connecting rod assemblies are installed at the movable end of the hydraulic push assembly; a long rod (6) is fixedly installed at the other end of each of the connecting rod assemblies; and a flexible protective member (7) is fixedly installed between two adjacent long rods (6); A fixing ring (11) is fixedly sleeved on one side of the outer surface of the installation sleeve (3), and a plurality of installation grooves (12) are evenly arranged on the edge of the fixing ring (11), and the installation grooves (12) are connected to adjacent long rods (6).

2. A cutting head protection device for coal mining and excavation according to claim 1, characterized in that: The hydraulic pushing assembly comprises two hydraulic telescopic rods (2), and the hydraulic telescopic rods (2) are symmetrically fixedly mounted on the outer walls of both sides of the housing (1), and the movable ends of the two hydraulic telescopic rods (2) are commonly fixedly connected to an annular push plate (4), and the annular push plate (4) is slidably sleeved on the outer surface of the mounting sleeve (3).

3. A cutting head protection device for coal mining and excavation according to claim 2, characterized in that: The plurality of connecting rod assemblies all include a first connecting seat (10), and the first connecting seat (10) is fixedly connected to the annular push plate (4), the inner walls on both sides of the first connecting seat (10) are rotatably connected to a connecting rod body (5), the outer walls on both sides of the connecting rod body (5) are rotatably connected to a second connecting seat (9), and the second connecting seat (9) is fixedly connected to an adjacent long rod (6).

4. A cutting head protection device for coal mining and excavation according to claim 1, characterized in that: The other end of the mounting sleeve (3) is rotatably mounted with a cutting head (8), and a fixing ring (11) is located between the cutting head (8) and the hydraulic pushing assembly.

5. The cutting head protection device for coal mining and excavation according to claim 1 is characterized by: The plurality of long rods (6) are rotatably connected to the inner walls on both sides of adjacent installation grooves (12).

6. A cutting head protection device for coal mining and excavation according to claim 1, characterized in that: The plurality of flexible protective members (7) are all made of protective nets.

7. A cutting head protection device for coal mining and excavation according to claim 2, characterized in that: The annular push plate (4) adopts a hollow design.

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