Protective barrel for crusher drill bit

Abstract

The utility model relates to a protective barrel for a drill bit of a crusher. The device comprises an outer pile casing, an upper check ring arranged on the outer pile casing, at least two slings arranged on the upper check ring, a lower check ring embedded in the outer pile casing in a sliding manner, an extension sliding sleeve arranged on the lower check ring, and a telescopic pile casing arranged between the upper check ring and the lower check ring, the two drill bit sliding sleeves are fixed to the two ends of the telescopic pile casing in a penetrating mode respectively, the flexible filling layer is arranged between the outer pile casing and the telescopic pile casing, the at least two slings are used for being installed on a crusher drill bit, and the two drill bit sliding sleeves and the extension sliding sleeve are used for allowing the crusher drill bit to sequentially penetrate in a sliding mode. The device has the advantages of being simple in structure, low in cost and capable of preventing broken stones generated during crushing operation from splashing and improving operation safety.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of drill head protection, especially to a protective cylinder for a crusher drill head. BACKGROUND

[0002] In daily life, the quality of municipal roads is directly related to the comfort, convenience and safety of citizens' travel. Whether the condition of the road is good or not plays a crucial role in ensuring the daily travel of the public. When municipal roads have cracks, uneven settlement and other diseases, or municipal underground pipelines need to be repaired and reconstructed, it is usually necessary to perform crushing and reconstruction work on the damaged road. During the crushing process, if the drill head part of the crusher is not properly protected, the crushed stones may fly around during the crushing operation, which not only has the risk of injuring the surrounding pedestrians, but also may cause some pollution to the environment, such as generating a large amount of dust. Although the use of a separate fence method can reduce the impact of flying stones and dust to some extent, this method requires constant adjustment of the position of the fence tool as the crushing machinery moves, which not only reduces the efficiency of the crushing operation, but also often fails to achieve satisfactory fence results. Therefore, in order to improve the safety and efficiency of the crushing operation, there is an urgent need for a protective tool that is simple in structure and has strong practicality. This tool should be able to be installed near the drill head of the crusher and have an adjustable function to adapt to different crushing environments. Such a protective cylinder can effectively solve the above technical problems and ensure the safety and efficiency of the crushing operation, thereby better serving the maintenance and reconstruction of municipal roads. SUMMARY

[0003] The utility model solves the problem in the prior art and provides a protective cylinder for a crusher drill head, which has the advantages of simple structure, low cost, prevention of flying stones generated during the crushing operation, and improvement of operation safety.

[0004] The above utility model of the utility model is realized by the following technical scheme:

[0005] A protective cylinder for a crusher drill head, comprising an outer cylinder, an upper retaining ring arranged on the outer cylinder, at least two slings arranged on the upper retaining ring, a lower retaining ring slidably embedded in the outer cylinder, an extension sliding sleeve arranged on the lower retaining ring, an extension cylinder arranged between the upper retaining ring and the lower retaining ring, two drill head sliding sleeves respectively arranged at both ends of the extension cylinder, and a flexible filling layer arranged between the outer cylinder and the extension cylinder, the at least two slings being arranged on the drill head of the crusher, the two drill head sliding sleeves and the extension sliding sleeve being used for the drill head of the crusher to slide through in sequence.

[0006] By adopting the technical scheme, the protection cylinder can be pre-installed on the drilling section of the drill bit through the drill bit sliding sleeve and the extension sliding sleeve, and then is fixed on the top end of the drill bit close to the crusher body through the sling, so that the installation is convenient, and when the crushing operation is performed, the telescopic protection cylinder is in the elongated state and the lower blocking ring is close to the bottom end of the outer protection cylinder, at this time, the protection cylinder is moved to the extension sliding sleeve to abut against the ground through the crusher, in the drilling process, the top end of the drill bit moves close to the upper blocking ring until abutting against the upper blocking ring, at this time, the telescopic protection cylinder is gradually compressed, and the outer protection cylinder also covers the extension sliding sleeve, so that the crushed stones generated by crushing are effectively blocked in the outer protection cylinder in the compression process of the telescopic protection cylinder, the splashing of the crushed stones is avoided, the safety of the operation personnel is ensured, the position of the protection cylinder can be flexibly adjusted along with the movement of the drill bit, and the efficiency of the crushing operation is further improved; meanwhile, the flexible filling layer can absorb the vibration generated by crushing, the possibility of splashing of the crushed stones is further reduced, the noise and mechanical wear are reduced, and a certain buffering effect is provided to protect the crusher drill bit from accidental impact.

[0007] The utility model further sets up: the bottom surface recessed setting of extension sliding sleeve has the accommodating cavity.

[0008] By adopting the technical scheme, the accommodating cavity can also be used to collect part of the crushed stones, and the possibility of splashing of the crushed stones is further reduced.

[0009] The utility model further sets up: the opening of accommodating cavity is provided with the guide surface.

[0010] By adopting the technical scheme, the setting of the guide surface can guide the crusher drill bit to slide into the accommodating cavity more smoothly, the noise and mechanical wear caused by the collision are avoided, and the safety of the crushing operation is improved.

[0011] The utility model further sets up: telescopic protection cylinder includes a pair of end plate, and setting at the pair of end plate between linear bearing, two drill bit sliding sleeve are fixed respectively on the pair of end plate.

[0012] By adopting the technical scheme, the setting of the linear bearing can make the telescopic protection cylinder more stable in the compression and elongation process, and the noise and mechanical wear caused by the shaking are reduced; meanwhile, the linear bearing can also bear greater axial force, and the carrying capacity of the protection cylinder is improved.

[0013] The utility model further sets up: telescopic protection cylinder still includes the compression spring of setting at the pair of end plate between and arranging in linear bearing.

[0014] By adopting the above technical scheme, the compression spring can make the telescopic protective cylinder have certain buffering effect when subjected to external force, thereby protecting the crusher drill bit from accidental impact; meanwhile, the compression spring can also make the telescopic protective cylinder automatically return to the initial state after the crushing operation is completed, thereby facilitating the next use.

[0015] The utility model further sets up: the flexible filling layer is composed of a plurality of rubber particles.

[0016] By adopting the above technical scheme, the flexible filling layer can enhance the elasticity and wear resistance of the protective cylinder as a whole, effectively reduce the impact and wear of the drill bit on the inner wall of the protective cylinder during the crushing operation, and prolong the service life of the protective cylinder; meanwhile, the gap between the rubber particles can also play a certain damping effect, thereby further protecting the stability of the crusher drill bit during the operation.

[0017] To sum up, the protective cylinder has the advantages of simple structure, low cost, ability to prevent the flying of the crushed stones generated during the crushing operation, and improved operation safety. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is the connection relationship between the crusher drill bit and the protective cylinder of the utility model.

[0019] Figure 2 is the cross-sectional structure schematic view of the protective cylinder of the utility model.

[0020] In the figure, 1 is an outer protective cylinder, 2 is an upper retaining ring, 3 is a sling, 4 is a lower retaining ring, 5 is an extension sliding sleeve, 51 is a containing cavity, 52 is a guide surface, 6 is a telescopic protective cylinder, 61 is an end plate, 62 is a linear bearing, 63 is a compression spring, 7 is a drill bit sliding sleeve, and 8 is a flexible filling layer. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, purposes and effects of the utility model more clear and easy to understand, the utility model is further described below in combination with the drawings and specific embodiments.

[0022] Referring to Figure 1 and Figure 2The utility model discloses a protection cylinder for breaker drill bit, including outer protection cylinder 1, set up on the upper check ring 2 of outer protection cylinder 1, set up two sling 3 of upper check ring 2, slip and embed in the lower check ring 4 of outer protection cylinder 1, set up the extension slide sleeve 5 of lower check ring 4, set up the telescopic protection cylinder 6 between upper check ring 2 and lower check ring 4, two drill bit slide sleeve 7 respectively are worn and fixed in the both ends of telescopic protection cylinder 6, and set up the flexible filling layer 8 between outer protection cylinder 1 and telescopic protection cylinder 6. Two slings 3 are used for installing on the breaker drill bit, and two drill bit slide sleeve 7 and extension slide sleeve 5 are used for supplying the breaker drill bit and successively slipping and wearing.

[0023] Refer to Figure 2 The bottom surface of the extension slide sleeve 5 is concave and provided with a containing cavity 51, and the opening of the containing cavity 51 is provided with a guide surface 52. The containing cavity 51 can also be used to collect part of the broken stones, further reducing the possibility of broken stones splashing. The guide surface 52 can guide the breaker drill bit to smoothly slide into the containing cavity 51, avoiding noise and mechanical wear caused by collision, and also improving the safety of the breaking operation.

[0024] The telescopic protection cylinder 6 includes a pair of end plates 61, a linear bearing 62 arranged between the pair of end plates 61, and a compression spring 63 arranged in the linear bearing 62. The two drill bit slide sleeves 7 are respectively fixed on the pair of end plates 61. The linear bearing 62 can make the telescopic protection cylinder 6 more stable during compression and extension, reducing noise and mechanical wear caused by shaking. At the same time, the linear bearing 62 can also withstand a larger axial force, improving the carrying capacity of the protection cylinder. The compression spring 63 can provide a certain buffering effect when the telescopic protection cylinder 6 is subjected to external force, protecting the breaker drill bit from accidental impact. At the same time, the compression spring 63 can also make the telescopic protection cylinder 6 automatically return to the initial state after the breaking operation is completed, facilitating the next use.

[0025] The flexible filling layer 8 is composed of a plurality of rubber particles. The flexible filling layer 8 can enhance the elasticity and wear resistance of the protection cylinder as a whole, effectively reducing the impact and wear of the drill bit on the inner wall of the protection cylinder during the breaking operation, prolonging the service life of the protection cylinder. At the same time, the gap between the rubber particles can also play a certain damping effect, further protecting the stability of the breaker drill bit during the operation.

[0026] The implementation principle of this embodiment is as follows: The protective sleeve can be pre-fitted onto the drilling section of the drill bit using the drill bit sliding sleeve 7 and the extension sliding sleeve 5, and then hoisted and fixed to the top of the drill bit near the crusher body using the sling 3. Installation is convenient. During crushing operations, under the action of the telescopic protective sleeve 6 and the flexible filling layer 8, the telescopic protective sleeve 6 is in an extended state, and the lower retaining ring 4 is positioned near the bottom of the outer protective sleeve 1. At this time, the crusher drives the protective sleeve to move until the extension sliding sleeve 5 touches the ground. During the drill bit feeding process, the top of the drill bit moves towards the upper retaining ring 2 until it touches the upper retaining ring 2. At this point, the extension... As the telescopic sleeve 6 is gradually compressed, the outer sleeve 1 also covers and extends the sliding sleeve 5. As a result, the crushed stone is effectively blocked inside the outer sleeve 1 during the compression process of the telescopic sleeve 6, preventing the stone from splashing and ensuring the safety of the operators. It also allows the protective sleeve to be flexibly adjusted in position as the drill bit moves, further improving the efficiency of the crushing operation. At the same time, the flexible filling layer 8 can absorb the vibration generated by crushing, further reducing the possibility of stone splashing, reducing noise and mechanical wear, and providing a certain buffering effect to protect the crusher drill bit from accidental impact.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A protective sleeve for a crusher drill bit, characterized in that: The device includes an outer casing (1), an upper retaining ring (2) disposed on the outer casing (1), at least two slings (3) disposed on the upper retaining ring (2), a lower retaining ring (4) slidably embedded in the outer casing (1), an extension sleeve (5) disposed on the lower retaining ring (4), a telescopic casing (6) disposed between the upper retaining ring (2) and the lower retaining ring (4), two drill bit sleeves (7) respectively inserted and fixed at both ends of the telescopic casing (6), and a flexible filling layer (8) disposed between the outer casing (1) and the telescopic casing (6). The at least two slings (3) are used to be installed on the crusher drill bit, and the two drill bit sleeves (7) and the extension sleeve (5) are used for the crusher drill bit to slide through sequentially.

2. The protective sleeve for a crusher drill bit according to claim 1, characterized in that: The bottom surface of the extended sliding sleeve (5) is recessed to provide a receiving cavity (51).

3. A protective sleeve for a crusher drill bit according to claim 2, characterized in that: The opening of the receiving cavity (51) is provided with a guide surface (52).

4. A protective sleeve for a crusher drill bit according to claim 1, characterized in that: The telescopic sleeve (6) includes a pair of end plates (61) and a linear bearing (62) disposed between the pair of end plates (61). The two drill bit sleeves (7) are respectively mounted and fixed on the pair of end plates (61).

5. A protective sleeve for a crusher drill bit according to claim 4, characterized in that: The telescopic sleeve (6) also includes a compression spring (63) disposed between the pair of end plates (61) and arranged within the linear bearing (62).

6. A protective sleeve for a crusher drill bit according to claim 1, characterized in that: The flexible filler layer (8) is composed of multiple rubber particles.

Images