Excavation auxiliary device of weak broken surrounding rock tunnel excavator

Abstract

The utility model relates to the technical field of tunnel excavation auxiliary equipment, and discloses a soft broken surrounding rock tunnel excavator excavation auxiliary device which comprises a bucket and a cleaning mechanism, the front end of the bucket is connected with bucket teeth through screws, the cleaning mechanism is arranged on the inner surface of the bucket, and the cleaning mechanism comprises a cleaning block, a rotating shaft, a gear and a guide rail. Due to the arrangement of the cleaning mechanism, when the excavator excavates a soft and broken surrounding rock tunnel, the cleaning block is tightly attached to the surface of the bucket to do reciprocating motion, humid soil attached to the interior of the bucket can be scraped off from the bucket, and the situation that the working efficiency of the excavator in the excavation transportation process is reduced due to the fact that soil is left in the bucket is avoided; and through the arrangement of the crushing mechanism, the angle of the bucket is adjusted to beat downwards to crush large soil blocks and stones by utilizing a crushing head while the bottom surface of the bucket is not influenced to level the land, so that the excavator is convenient to excavate and carry, and the practicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel excavation auxiliary equipment, in particular to an excavation auxiliary device for a soft and broken surrounding rock tunnel excavator. Background Art

[0002] The existing excavation auxiliary device for soft and broken rock tunnel excavators has the following problems when used: In the soft and broken rock tunnel excavator excavation auxiliary device with publication number: CN205329753U, it is proposed that "it includes a left bucket tooth fixing seat arranged on the left side of the excavator bucket and a right bucket tooth fixing seat arranged on the right side of the excavator bucket. The structures of the left bucket tooth fixing seat and the right bucket tooth fixing seat are the same, and the advantage is that the tunnel excavation contour line can be effectively controlled to avoid over-excavation and under-excavation of the tunnel." Although the above device can effectively clean expansion joints of different sizes, the above device still has the following problems: First: During the excavation of soft and broken rock tunnels, the soil has a high water content and is easy to adhere to the inner surface of the bucket, thereby reducing the excavation efficiency of the excavator. The above equipment does not have the function of cleaning the inner surface of the bucket; Second: Large stones or soil blocks are often encountered during the excavation process. It is difficult for the existing excavation auxiliary device to complete the crushing work by using a bucket, so we need a more convenient excavation auxiliary device for soft and broken rock tunnel excavators to improve work efficiency. Utility Model Content

[0003] The purpose of the utility model is to provide an excavation auxiliary device for a soft and broken surrounding rock tunnel excavator, so as to solve the problem raised in the above-mentioned background technology that during the excavation of a soft and broken surrounding rock tunnel, the soil has a high water content and is easily adhered to the inner surface of the bucket, thereby reducing the excavation efficiency of the excavator, and the above-mentioned equipment does not have the function of cleaning the inner surface of the bucket.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an excavation auxiliary device for a soft and broken surrounding rock tunnel excavator, comprising a bucket and a cleaning mechanism, wherein the front end of the bucket is screwed with bucket teeth, the inner surface of the bucket is provided with a cleaning mechanism, and the cleaning mechanism comprises a cleaning block, a rotating shaft, a gear and a guide rail.

[0005] Preferably, two sides of the bucket are screwed to a protective shell.

[0006] Preferably, the cleaning block is arranged on the inner surface of the bucket, the cleaning block is triangular, and there are two cleaning blocks in total.

[0007] Preferably, a card slot is provided on the inner surface of the bucket, a card block is fixedly connected to the lower surface of the cleaning block, the card block is arranged inside the card slot, and the size of the card block matches the card slot.

[0008] Preferably, sliding grooves are provided on both sides of the inner surface of the bucket, the rotating shaft is arranged inside the cleaning block, the inner diameter of the sliding groove matches the outer diameter of the rotating shaft, and a dustproof brush is arranged inside the sliding groove.

[0009] Preferably, both ends of the rotating shaft are connected to the gear slots, the guide rail is provided on the inner surface side of the protective shell, the guide rail is meshedly connected to the gear, and a servo motor is provided at one end of the rotating shaft.

[0010] Preferably, a sleeve is welded on the back of the bucket, and the sleeve is connected to the crushing head screw through a shock absorbing spring.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. The utility model is provided with a cleaning mechanism. When the excavator is excavating a tunnel in soft and broken surrounding rock, the cleaning block moves back and forth closely against the bucket surface, and the wet soil adhering to the inside of the bucket can be scraped off from the bucket, thereby avoiding residual soil in the bucket and reducing the excavation efficiency of the excavator;

[0013] 2. The utility model sets a crushing mechanism, and while not affecting the ability of the bottom surface of the bucket to level the land, the angle of the bucket can be adjusted and the crushing head can be used to smash larger clods of soil and rocks by striking downward, which facilitates excavation and transportation by the excavator and improves the practicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0015] Figure 2 It is a schematic rear view of the utility model.

[0016] Figure 3 It is a schematic diagram of the cleaning mechanism structure of the utility model.

[0017] Figure 4 It is a schematic diagram of the partial structure of the cleaning mechanism of the utility model.

[0018] Figure 5 This is a schematic diagram of the partial structure of the cleaning mechanism of the utility model

[0019] Figure 6 This is a schematic diagram of the crushing mechanism structure of the utility model

[0020] In the figure: 1. bucket; 2. bucket teeth; 3. cleaning mechanism; 301. protective shell; 302. cleaning block; 303. slot; 304. block; 305. sliding slot; 306. rotating shaft; 307. dust-proof brush; 308. gear; 309. guide rail; 310. servo motor; 4. crushing mechanism; 401. casing; 402. shock-absorbing spring; 403. crushing head. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0022] 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 in 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.

[0023] See also Figure 1-6 A soft and broken rock tunnel excavator excavation auxiliary device includes a bucket 1 and a cleaning mechanism 3. The front end of the bucket 1 is screwed with bucket teeth 2. The inner surface of the bucket 1 is provided with a cleaning mechanism 3. The cleaning mechanism 3 includes a cleaning block 302, a rotating shaft 306, a gear 308 and a guide rail 309.

[0024] The two sides of the bucket 1 are screwed with a protective shell 301, which protects the internal structure and prevents the internal device from being damaged due to impact during the excavation process.

[0025] The cleaning block 302 is arranged on the inner surface of the bucket 1. The cleaning block 302 is triangular. There are two cleaning blocks 302. The front and rear cleaning blocks 302 can conveniently scrape away the soil in the front and rear directions. The triangular setting can reduce the friction between the cleaning block 302 and the soil.

[0026] A card slot 303 is provided on the inner surface of the bucket 1, and a card block 304 is fixedly connected to the lower surface of the cleaning block 302. The card block 304 is arranged inside the card slot 303. The size of the card block 304 matches the card slot 303. The card block 304 can slide inside the card slot 303. The card block 304 makes the cleaning block 302 close to the inner surface of the bucket 1, thereby improving the ability of the cleaning mechanism 3 to clean the inner surface of the bucket 1.

[0027] Sliding grooves 305 are provided on both sides of the inner surface of the bucket 1, and the rotating shaft 306 is arranged inside the cleaning block 302. The inner diameter of the sliding groove 305 matches the outer diameter of the rotating shaft 306. A dustproof brush 307 is arranged inside the sliding groove 305. The rotating shaft 306 drives the cleaning block 302 to move along the sliding groove 305. The dustproof brush 307 does not affect the sliding of the rotating shaft 306 in the sliding groove 305, and can prevent mud from entering the protective shell 301 from the sliding groove 305 to affect the normal operation of the device.

[0028] Both ends of the rotating shaft 306 are connected to the gear 308 slot, the guide rail 309 is opened on the side of the inner surface of the protective shell 301, the guide rail 309 is meshed with the gear 308, and a servo motor 310 is provided at one end of the rotating shaft 306. The servo motor 310 provides power for the rotation of the gear 308 and the rotating shaft 306, so that the cleaning mechanism 3 has the function of reciprocating motion.

[0029] A sleeve 401 is welded to the back of the bucket 1, and the sleeve 401 is connected to the crushing head screw 403 through a shock-absorbing spring 402. The bucket 1 can adjust the angle and use the crushing head 403 to hit larger stones to break the stones for easy excavation and transportation, while the shock-absorbing spring 402 can reduce the vibration transmitted to the bucket 1 and the excavator by the impact, preventing the service life of the excavator parts from being shortened due to long-term vibration.

[0030] Working principle: First, the device is powered by the on-board power supply of the excavator. When the excavator excavates a tunnel with soft and broken surrounding rocks, the soil with high moisture content will adhere to the inner surface of the bucket 1. Then the servo motor 310 drives the shaft 306 to rotate, the shaft 306 drives the gear 308 to rotate, the gear 308 moves along the guide rail 309, the gear 308 drives the shaft 306 to move, the shaft 306 drives the cleaning block 302 to move on the inner surface of the bucket 1, the cleaning block 302 drives the card block 304 to move along the card slot 303, and the card block 304 moves along the card slot 303. 04 Make the cleaning block 302 always close to the inner surface of the bucket 1, and the cleaning block 302 will shovel off the mud blocks adhering to the inner wall of the bucket 1. Finally, when encountering large stones that are difficult to carry and excavate during the excavation process, rotate the bucket 1 to make the crushing mechanism 4 face the stone, operate the bucket 1 to hit the stone, and the bucket 1 drives the sleeve 401 to move. The sleeve 401 drives the shock-absorbing spring 402 and the crushing head 403 to move. The crushing head 403 crushes the stone, and the shock-absorbing spring 402 is forced to shrink, thereby reducing the vibration transmitted to the bucket 1 by the crushing head 403.

[0031] The above is only an embodiment of the utility model, and the common sense such as the known specific structure and characteristics in the scheme is not described too much here. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the utility model. Any figure mark in the claims should not be regarded as limiting the claims involved.

Claims

1. An excavation auxiliary device for a soft and broken surrounding rock tunnel excavator, comprising a bucket (1) and a cleaning mechanism (3), characterized in that: The front end of the bucket (1) is screwed to a bucket tooth (2), and the inner surface of the bucket (1) is provided with a cleaning mechanism (3), which comprises a cleaning block (302), a rotating shaft (306), a gear (308) and a guide rail (309).

2. The excavation auxiliary device for a soft and broken surrounding rock tunnel excavator according to claim 1, characterized in that: The two sides of the bucket (1) are screw-connected with a protective shell (301).

3. The excavation auxiliary device for a soft and broken surrounding rock tunnel excavator according to claim 1, characterized in that: The cleaning block (302) is arranged on the inner surface of the bucket (1); the cleaning block (302) is triangular in shape; there are two cleaning blocks (302) in total.

4. The excavation auxiliary device for a soft and broken surrounding rock tunnel excavator according to claim 1, characterized in that: The inner surface of the bucket (1) is provided with a card slot (303), the lower surface of the cleaning block (302) is fixedly connected with a card block (304), the card block (304) is arranged inside the card slot (303), and the size of the card block (304) matches the card slot (303).

5. The excavation auxiliary device for a soft and broken surrounding rock tunnel excavator according to claim 1, characterized in that: Sliding grooves (305) are provided on both sides of the inner surface of the bucket (1); the rotating shaft (306) is arranged inside the cleaning block (302); the inner diameter of the sliding groove (305) matches the outer diameter of the rotating shaft (306); and a dustproof brush (307) is arranged inside the sliding groove (305).

6. The excavation auxiliary device for a soft and broken surrounding rock tunnel excavator according to claim 1, characterized in that: Both ends of the rotating shaft (306) are connected to the slots of the gear (308), the guide rail (309) is arranged on the inner surface side of the protective shell (301), the guide rail (309) is meshedly connected to the gear (308), and a servo motor (310) is arranged at one end of the rotating shaft (306).

7. The excavation auxiliary device for a soft and broken surrounding rock tunnel excavator according to claim 1, characterized in that: A sleeve (401) is welded to the back of the bucket (1), and the sleeve (401) is connected to a crushing head screw (403) via a shock-absorbing spring (402).

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