A pipe jacking machine capable of preventing slag from returning from the machine head

Abstract

The utility model discloses a pipe jacking machine for preventing slag from returning to a machine head, comprising: a machine head and a slag-return-preventing mechanism; the slag-return-preventing mechanism comprises a connecting block fixedly connected to a machine head outer shell and a first shell and a second shell respectively attached to the machine head, one side of the first shell and the second shell are fixedly connected with an insertion rod, one side of an outer wall of the insertion rod is provided with a groove, and the interior of the connecting block is symmetrically provided with through grooves for the insertion rod to pass through; the pipe jacking machine for preventing slag from returning to a machine head is provided with an anti-slag-returning mechanism on the machine head, so that the first shell and the second shell can drive the insertion rod to pass through the through groove after being assembled, so that the threaded rod can drive the push block to squeeze the movable rod after being tightened, and then the movable rod can be inserted into the groove to fix the first shell and the second shell, so that the first shell and the second shell can intercept and grind the slag returned at the machine head, which is beneficial to improving the stability of the pipe jacking machine during operation.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe jacking machines, in particular to a pipe jacking machine capable of preventing slag from returning from a machine head. Background Art

[0002] When constructing pipeline projects inside the soil, the conventional method of digging trenches or tunnels on the ground not only involves a large amount of work, but also causes damage to the road environment, especially in crowded cities where it can hinder traffic. In order to solve this problem, pipe jacking machines came into being; pipe jacking machines are mechanical equipment used in municipal underground trenchless projects. They do not require excavation of the surface layer and can complete the laying of underground pipelines across roads, railways, rivers, ground buildings, underground structures, etc. Modern engineering construction equipment. Pipe jacking machines consist of four parts: the main jacking system, the soil conveying system, the grouting system, and the electrical system.

[0003] However, when the pipe jacking machine in the prior art is in use, since the diameter of the head part is larger than the diameter of the pipe, some stones and soil debris cut by the head will accumulate on the outer wall of the pipe behind the head, thereby increasing the resistance of the pipe when the head moves forward, which is not conducive to the stability of the pipe jacking machine during operation. For this reason, we propose a pipe jacking machine that prevents slag from returning from the head. Utility Model Content

[0004] The utility model aims to provide a pipe jacking machine which can prevent slag from returning to the machine head, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pipe jacking machine for preventing slag return from a machine head, comprising: a machine head and a slag return prevention mechanism;

[0006] The anti-slag return mechanism includes a connecting block fixedly connected to the head shell and a first shell and a second shell respectively attached to the head, one side of the first shell and the second shell are fixedly connected with an insertion rod, one side of the outer wall of the insertion rod is provided with a groove, the interior of the connecting block is symmetrically provided with through grooves for the insertion rod to pass through, one side of the connecting block is fixedly connected with two support plates, the interiors of the two support plates are slidably connected with movable rods for inserting into the grooves, the adjacent sides of the two movable rods are tightly attached with a push block, one side of the push block is fixedly connected with a threaded rod, the outer wall of the threaded rod is threadedly connected with a connecting plate, and the connecting plate is fixedly connected to the shell of the head.

[0007] By adopting the above technical scheme, the first shell and the second shell can be fitted on the machine head outer shell and assembled together, so that the insertion rod can be driven to pass through the through groove of the connecting block, so that after the threaded rod is tightened, it can drive the push block to squeeze the two movable rods at the same time, and then the two movable rods can be moved towards each other on the support plate and inserted into the groove to fix the movable rods, so that the first shell and the second shell can be fixed on the machine head outer shell, and when the machine head moves forward, the returned slag can be intercepted by the first shell and the second shell, and the first shell and the second shell can rotate with the machine head, so that the stones and soil debris can be ground into smaller fragments by the first shell and the second shell, thereby avoiding the returned slag from affecting the pipeline behind the machine head.

[0008] Preferably, the contact ends of the two movable rods and the push block are both arc-shaped structures.

[0009] By adopting the above technical solution, the push block can be conveniently pressed against the two movable rods at the same time.

[0010] Preferably, one side of each of the first shell and the second shell is fixedly connected with equidistantly distributed conical blocks.

[0011] By adopting the above technical solution, the first shell and the second shell can collide and crush the returned slag at the machine head as the machine head rotates.

[0012] Preferably, a slag collecting chamber is formed when the first shell and the second shell are assembled, and the slag collecting chamber is arranged outside the machine head.

[0013] By adopting the above technical solution, it is possible to easily collect the intercepted return slag.

[0014] Preferably, a protrusion is welded on one end of the threaded rod away from the push block.

[0015] By adopting the above technical solution, it is possible to easily screw the threaded rod.

[0016] Preferably, a slot is formed on a side of the protrusion away from the threaded rod.

[0017] By adopting the above technical solution, it is possible to easily insert the wrench into the protrusion to screw the threaded rod.

[0018] Preferably, the number of the insertion rods is four, two of which are symmetrically welded on one side of the first shell, and the other two of which are symmetrically welded on one side of the second shell.

[0019] By adopting the above technical solution, the stability of the first shell and the second shell when they are fixed on the machine head can be effectively improved.

[0020] Preferably, the number of the connecting blocks is two, and the two connecting blocks are symmetrically arranged on the outer shell of the machine head.

[0021] By adopting the above technical solution, it is possible to stably position both sides of the first shell and the second shell at the same time.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] The pipe jacking machine for preventing slag from returning to the machine head is provided with an anti-slag return mechanism on the machine head, so that after the first shell and the second shell are assembled, the insertion rod can be driven to pass through the through groove, so that after the threaded rod is tightened, the push block can be driven to squeeze the movable rod, and then the movable rod can be inserted into the groove to fix the first shell and the second shell, so that the first shell and the second shell can intercept and grind the returned slag at the machine head, which is beneficial to improving the stability of the pipe jacking machine during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of a pipe jacking machine for preventing slag from returning from the machine head according to the utility model;

[0025] Figure 2 It is an enlarged schematic diagram of area A of the structural schematic diagram of the pipe jacking machine for preventing slag return from the machine head of the utility model;

[0026] Figure 3 It is a structural schematic diagram of the first shell and the second shell in the pipe jacking machine for preventing slag return from the machine head of the utility model;

[0027] Figure 4 It is a structural schematic diagram of a connecting block and a machine head in a pipe jacking machine for preventing slag from returning to the machine head according to the utility model;

[0028] Figure 5 The utility model is a schematic diagram of the structure of the inserting rod and the groove in the pipe jacking machine for preventing the slag from returning to the machine head.

[0029] In the figure: 1, machine head; 2, anti-slag return mechanism; 20, first shell; 21, second shell; 22, connecting block; 23, through groove; 24, plug rod; 25, groove; 26, support plate; 27, movable rod; 28, push block; 29, threaded rod; 201, connecting plate; 202, protrusion; 203, slot; 204, slag collecting chamber; 205, conical block. DETAILED DESCRIPTION

[0030] 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.

[0031] See also Figure 1-Figure 5 , the utility model provides a technical solution: a pipe jacking machine for preventing slag return from a machine head, comprising: a machine head 1 and a slag return prevention mechanism 2;

[0032] Firstly, in order to make the first shell 20 and the second shell 21 fit on the outer shell of the machine head 1 and be assembled together, the insertion rod 24 can be driven to pass through the through groove 23 of the connecting block 22, so that the threaded rod 29 can drive the push block 28 to squeeze the two movable rods 27 at the same time after being tightened, so that the two movable rods 27 can move toward each other on the support plate 26 and then be inserted into the groove 25 to fix the movable rods 27, so that the first shell 20 and the second shell 21 can be fixed on the outer shell of the machine head 1. When the machine head 1 moves forward, the returned slag can be intercepted by the first shell 20 and the second shell 21, and the first shell 20 and the second shell 21 can rotate with the machine head 1, so that the stones and soil residue can be ground into smaller pieces by the first shell 20 and the second shell 21, thereby avoiding the returned slag from affecting the pipeline behind the machine head 1. The slag-return prevention mechanism 2 comprises a connecting block 22 fixedly connected to the housing of the machine head 1 and a first shell 20 and a second shell 21 respectively attached to the machine head 1. An insertion rod 24 is fixedly connected to one side of the first shell 20 and the second shell 21. A groove 25 is provided on one side of the outer wall of the insertion rod 24. A through groove 23 for the insertion rod 24 to pass through is symmetrically provided inside the connecting block 22. Two support plates 26 are fixedly connected to one side of the connecting block 22. The two support plates 26 are slidably connected to the inside of each of the two support plates 26 with a movable rod 27 for inserting into the groove 25. A push block 28 is tightly attached to one side of the two movable rods 27. A threaded rod 29 is fixedly connected to one side of the push block 28. A connecting plate 201 is threadedly connected to the outer wall of the threaded rod 29. The connecting plate 201 is fixedly connected to the housing of the machine head 1.

[0033] Secondly, in order to facilitate the push block 28 to squeeze the two movable rods 27 at the same time, the contact ends of the two movable rods 27 and the push block 28 are both arc-shaped structures; in order to facilitate the first shell 20 and the second shell 21 to collide and crush the returned slag at the machine head 1 as the machine head 1 rotates, one side of the first shell 20 and the second shell 21 is fixedly connected with equidistantly distributed conical blocks 205; in order to facilitate the collection of the intercepted returned slag, the first shell 20 and the second shell 21 are assembled to form a slag collecting chamber 204, and the slag collecting chamber 204 is arranged outside the machine head 1; in order to facilitate the twisting of the threaded rod 29, a protrusion 202 is welded on the end of the threaded rod 29 away from the push block 28; in order to facilitate the insertion of a wrench into the protrusion 202 to twist the threaded rod 29, a slot 203 is provided on the side of the protrusion 202 away from the threaded rod 29;

[0034] Again, in order to effectively improve the stability of the first shell 20 and the second shell 21 when they are fixed on the head 1, the number of the rods 24 is four, of which two rods 24 are symmetrically welded on one side of the first shell 20, and the other two rods 24 are symmetrically welded on one side of the second shell 21; in order to facilitate the stable positioning of both sides of the first shell 20 and the second shell 21 at the same time, the number of the connecting blocks 22 is two, and the two connecting blocks 22 are symmetrically arranged on the outer shell of the head 1.

[0035] According to the above technical scheme, the working steps of this scheme are summarized and sorted out: when in use, the first shell 20 and the second shell 21 are fitted on the shell of the head 1 and assembled together, which can drive the insertion rod 24 to penetrate the through groove 23 of the connecting block 22, so that the threaded rod 29 can drive the push block 28 to squeeze the two movable rods 27 at the same time after being tightened, so that the two movable rods 27 can move toward each other on the support plate 26 and then be inserted into the groove 25 to fix the movable rod 27, so that the first shell 20 and the second shell 21 can be fixed on the shell of the head 1. When the head 1 When moving forward, the returned slag can be intercepted by the first shell 20 and the second shell 21, and the first shell 20 and the second shell 21 can rotate with the machine head 1, so that the stones and soil debris can be ground into smaller pieces by the first shell 20 and the second shell 21, thereby avoiding the returned slag from affecting the pipeline behind the machine head 1; in addition, by loosening the threaded rod 29, the movable rod 27 can lose the squeezing force of the push block 28, so that the first shell 20 and the second shell 21 can be removed from the machine head 1, thereby facilitating the cleaning of the intercepted returned slag.

[0036] In summary: the pipe jacking machine for preventing slag from returning to the machine head is provided with an anti-slag return mechanism 2 on the machine head 1, so that after the first shell 20 and the second shell 21 are assembled, the insertion rod 24 can be driven to pass through the through groove 23, so that after the threaded rod 29 is tightened, the push block 28 can be driven to squeeze the movable rod 27, and then the movable rod 27 can be inserted into the groove 25 to fix the first shell 20 and the second shell 21, so that the first shell 20 and the second shell 21 can intercept and grind the returned slag at the machine head 1, which is beneficial to improving the stability of the pipe jacking machine during operation.

[0037] Parts not involved in the present invention are the same as the prior art or can be implemented by the prior art. Although the embodiments of the present invention have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A pipe jacking machine for preventing slag return from the machine head, characterized in that: include: A machine head (1) and a slag return prevention mechanism (2); The slag return prevention mechanism (2) comprises a connection block (22) fixedly connected to the housing of the machine head (1) and a first shell (20) and a second shell (21) respectively attached to the machine head (1); one side of the first shell (20) and the second shell (21) are fixedly connected to an insertion rod (24); one side of the outer wall of the insertion rod (24) is provided with a groove (25); the interior of the connection block (22) is symmetrically provided with a through groove (23) for allowing the insertion rod (24) to pass through; the connection block (22) ) is fixedly connected to one side of the machine head (1) with two support plates (26), the interiors of the two support plates (26) are slidably connected with movable rods (27) for inserting into the interior of the groove (25), the adjacent sides of the two movable rods (27) are tightly attached with push blocks (28), one side of the push blocks (28) is fixedly connected with a threaded rod (29), the outer wall of the threaded rod (29) is threadedly connected with a connecting plate (201), and the connecting plate (201) is fixedly connected to the outer shell of the machine head (1).

2. A pipe jacking machine for preventing slag return from the machine head according to claim 1, characterized in that: The contact ends of the two movable rods (27) and the push block (28) are both arc-shaped structures.

3. A pipe jacking machine for preventing slag return from the machine head according to claim 1, characterized in that: One side of each of the first shell (20) and the second shell (21) is fixedly connected with equidistantly distributed conical blocks (205).

4. A pipe jacking machine for preventing slag return from the machine head according to claim 3, characterized in that: The first shell (20) and the second shell (21) are assembled to form a slag collecting chamber (204), and the slag collecting chamber (204) is arranged outside the machine head (1).

5. A pipe jacking machine for preventing slag return from the machine head according to claim 1, characterized in that: A protrusion (202) is welded to one end of the threaded rod (29) away from the push block (28).

6. A pipe jacking machine for preventing slag return from the machine head according to claim 5, characterized in that: A slot (203) is formed on a side of the protrusion (202) away from the threaded rod (29).

7. A pipe jacking machine for preventing slag return from the machine head according to claim 1, characterized in that: The number of the insertion rods (24) is four, of which two of the insertion rods (24) are symmetrically welded on one side of the first shell (20), and the other two of the insertion rods (24) are symmetrically welded on one side of the second shell (21).

8. The pipe jacking machine for preventing slag return from the machine head according to claim 1, characterized in that: The number of the connecting blocks (22) is two, and the two connecting blocks (22) are symmetrically arranged on the outer shell of the machine head (1).

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