Tool bit of tube push bench

Abstract

The utility model discloses a pipe jacking machine tool bit, and relates to the technical field of pipe jacking machine tool bits. The cutter head comprises a cutter head body, a plurality of outer side cutters are arranged on one side of the cutter head body in a circumferential array mode, four connecting strips are arranged on one sides of the outer side cutters, and positioning holes are formed in the side faces of the ends, penetrating through the cutter head body, of the connecting strips. The connecting strip on the outer side cutter penetrates through the cutter head body, the connecting strip extrudes the positioning block, the positioning block and the limiting strip elastically slide through the spring, the positioning block is elastically clamped into the positioning hole in the connecting strip, and the outer side cutter can be conveniently and rapidly installed, and when the outer side cutter needs to be disassembled, the two-way threaded rod is rotated to drive the sliding strip to slide; the sliding strip drives the limiting strip and the positioning block to slide through the spring, so that the positioning block slides out of the positioning hole, limiting of the outer cutter can be rapidly relieved through one-man operation, the outer cutter can be conveniently replaced by one man, and the problem that the replacement cost of the outer cutter is increased due to the fact that too many parts are arranged on the outer cutter is solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of pipe jacking machine cutter head, concretely relates to a pipe jacking machine cutter head. BACKGROUND

[0002] Pipe jacking construction is a kind of pipe laying construction technology without excavation or less excavation, and the pipe jacking construction is to overcome the friction between the pipe and the surrounding soil by the jacking force generated by the jacking equipment in the working pit, and then the pipe is jacked into the soil according to the designed slope, and the earthwork is removed.

[0003] The Chinese patent with the publication number CN221920974U discloses a novel pipe jacking machine cutter head, when the operator replaces the pipe jacking machine cutter head, the operator simultaneously pushes the four fixing pieces corresponding to the clamping blocks, the clamping blocks move in the limiting groove with the limiting blocks, the spring is compressed, a pushing force is applied on the outside, the cutter can be disassembled, the four fixing pieces corresponding to the new cutter are respectively aligned with the assembly holes, through the pressing process, the fixing pieces pass through the assembly holes, until the clamping blocks are moved to the back of the cutter head main body to form clamping, when the pipe head is used in the pipe jacking process, the force acting on the center cutter becomes larger when the blocking object appears, the pressure sensor senses, not only can the center cutter be retracted, but also can control the pipe jacking machine to stop moving, and the cutter head is better protected.

[0004] However, the novel pipe jacking machine cutter head dismounts the outside cutter positioning by the spring pushing the clamping block, since the outside cutter body is large, a single person is not easy to simultaneously push the four clamping blocks, and multiple persons are needed to simultaneously push the clamping blocks when the outside cutter is replaced, so that the working intensity of the workers is increased.

[0005] Therefore, the utility model is provided. UTILITY MODEL CONTENT

[0006] The utility model solves the technical problem in the prior art, and provides a pipe jacking machine cutter head.

[0007] To solve the above technical problems, the basic idea of the technical scheme of the utility model is as follows:

[0008] A pipe jacking machine cutter head, comprising a cutter head main body, a plurality of outside cutters are arranged in the circumferential direction on one side of the cutter head main body, four connecting strips are arranged on one side of the outside cutters, the connecting strips pass through the side surface of one end of the cutter head main body and are provided with positioning holes, a fixed strip is connected to one side of the cutter head main body, sliding strips are slidably connected to the two sides of the fixed strip, a bidirectional threaded rod is rotatably connected to the fixed strip and is in threaded connection with the two sliding strips, a limiting strip is slidably connected to one side of the sliding strip, a plurality of springs are arranged between the limiting strip and the sliding strip, and a limiting block corresponding to the positioning hole is arranged on one side of the limiting strip.

[0009] Optionally, the positioning block is provided with an inclined surface on one side, and the distance between the inclined surface and the limiting strip gradually increases from the end close to the cutter head body to the end away from the cutter head body.

[0010] Optionally, the bidirectional threaded rod is provided with hand wheels at both ends, the threaded directions of the two ends are opposite, and the two ends of the bidirectional threaded rod penetrate through the limiting strip and are matched with the two sliding strips respectively.

[0011] Optionally, the fixed strip is provided with two guide rods on one side, the sliding strip and the limiting strip are provided with guide holes corresponding to the guide rods on one side, and the sliding strip and the limiting strip are slidingly matched on the guide rods through the guide holes.

[0012] Optionally, the fixed strip is provided with a circular hole on one side, the outer side of the middle part of the bidirectional threaded rod is a smooth surface, the middle part of the bidirectional threaded rod is rotationally matched in the circular hole, the middle part of the bidirectional threaded rod is provided with an annular groove, the fixed strip is screw matched with a plum blossom handle screw on one side, and a plurality of limiting grooves are arranged in the annular groove in a circumferential array.

[0013] Optionally, the cutter head body is provided with a mounting groove corresponding to the outer cutter on one side, one end of the outer cutter is located in the mounting groove, the inner wall of the mounting groove is provided with a through hole corresponding to the connecting strip, and the connecting strip is slidingly matched in the through hole.

[0014] After the above technical scheme is adopted, the utility model has the following beneficial effects compared with the prior art, of course, any product implementing the utility model does not necessarily need to achieve all the advantages described below:

[0015] By penetrating the connecting strip on the outer cutter through the cutter head body, the connecting strip extrudes the positioning block, the positioning block and the limiting strip are elastically slid through the spring, the positioning block is elastically clamped into the positioning hole on the connecting strip, the outer cutter is conveniently and quickly installed, when the outer cutter needs to be disassembled, the bidirectional threaded rod is rotated to drive the sliding strip to slide, the sliding strip drives the limiting strip and the positioning block to slide through the spring, the positioning block slides out of the positioning hole, one person can conveniently and quickly release the limiting of the outer cutter, one person can conveniently replace the outer cutter, and the problem of increasing the replacement cost of the outer cutter due to too many parts arranged on the outer cutter is avoided.

[0016] The specific implementation manner of the utility model will be described in further detail below in combination with the drawings. DRAWINGS

[0017] The drawings in the following description are only some embodiments, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the drawings. In the drawings:

[0018] Figure 1 It is a three-dimensional structure schematic view of an embodiment of the utility model;

[0019] Figure 2It is the cross section structure schematic view of the bidirectional screw rod of one embodiment of the utility model;

[0020] Figure 3 It is the cross section structure schematic view of the connecting strip of one embodiment of the utility model;

[0021] Figure 4 It is the explosion drawing of one embodiment of the utility model;

[0022] Figure 5 It is the fixed strip structure schematic view of one embodiment of the utility model;

[0023] In the drawings, the component list represented by each sign is as follows:

[0024] Cutter head main body 1, outer cutter 2, connecting strip 3, positioning hole 4, fixed strip 5, sliding strip 6, bidirectional screw rod 7, limiting strip 8, spring 9, positioning block 10, inclined plane 11, hand wheel 12, guide rod 13, guide hole 14, round hole 15, annular groove 16, plum blossom handle screw 17, limiting groove 18, installation groove 19, through hole 20.

[0025] It should be noted that these drawings and textual descriptions are not intended to limit the concept range of the utility model in any way, but to illustrate the concept of the utility model to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0026] The utility model will be further explained in detail in combination with the drawings.

[0027] Please refer to Figures 1-5 As shown in the drawing, in the embodiment, a pipe jacking machine cutter head is provided, which comprises a cutter head main body 1, the cutter head main body 1 is circumferentially arrayed with a plurality of outer cutters 2 on one side, the outer cutters 2 are provided with four connecting strips 3 on one side, the connecting strips 3 are provided with positioning holes 4 through the side of one end of the cutter head main body 1, the cutter head main body 1 is connected with a fixed strip 5 on one side, the fixed strip 5 is slidingly matched with sliding strips 6 on both sides, the fixed strip 5 is rotationally matched with a bidirectional screw rod 7 which is threadedly matched with the two sliding strips 6, the sliding strips 6 are slidingly matched with limiting strips 8 on one side, a plurality of springs 9 are arranged between the limiting strips 8 and the sliding strips 6, the limiting strips 8 are provided with positioning blocks 10 corresponding to the positioning holes 4 on one side.

[0028] By passing the connecting strip 3 on the outer cutter 2 through the cutter disc body 1, the connecting strip 3 extrudes the positioning block 10, the positioning block 10 and the limiting strip 8 are elastically slid by the spring 9, the positioning block 10 is elastically clamped into the positioning hole 4 on the connecting strip 3, which facilitates quick installation of the outer cutter 2. When the outer cutter 2 needs to be disassembled, the two-way threaded rod 7 is rotated to drive the sliding strip 6 to slide, the sliding strip 6 drives the limiting strip 8 and the positioning block 10 to slide through the spring 9, the positioning block 10 slides out of the positioning hole 4, which facilitates single-person operation to quickly release the limiting of the outer cutter 2, facilitates single-person replacement of the outer cutter 2, and avoids the problem of increasing the replacement cost of the outer cutter 2 due to too many parts provided on the outer cutter 2.

[0029] As shown in Figures 2-3 The positioning block 10 of the embodiment is provided with a slope 11 on one side, and the distance between the slope 11 and the limiting strip 8 gradually increases from the end close to the cutter disc body 1 to the end away from the cutter disc body 1, which facilitates extrusion of the slope 11 on the positioning block 10 by the connecting strip 3, elastic sliding of the positioning block 10 and the limiting strip 8 by the spring 9, and elastic clamping of the positioning block 10 into the positioning hole 4 on the connecting strip 3, thereby facilitating quick installation of the outer cutter 2.

[0030] As shown in Figures 2-3 The two-way threaded rod 7 is provided with a hand wheel 12 at each end, the screw directions of the two ends of the two-way threaded rod 7 are opposite, the two ends of the two-way threaded rod 7 penetrate through the limiting strip 8 and are respectively matched with the two sliding strips 6, which facilitates rotation of the two-way threaded rod 7 by the hand wheel 12, improves the stability of the operation of the rotation of the two-way threaded rod 7, and facilitates operation of the staff who are used to using the left hand or the right hand by providing the hand wheel 12 at each end of the two-way threaded rod 7.

[0031] As shown in Figures 2-4 The fixed strip 5 is provided with two guide rods 13 on one side, the sliding strip 6 and the limiting strip 8 are respectively provided with a guide hole 14 corresponding to the guide rod 13 on one side, and the sliding strip 6 and the limiting strip 8 are slidably matched on the guide rod 13 through the guide hole 14, which facilitates sliding of the sliding strip 6 and the limiting strip 8 through the guide rod 13, and improves the stability of the sliding of the sliding strip 6 and the limiting strip 8.

[0032] As shown in Figures 2-3 The fixed strip 5 is provided with a circular hole 15 on one side, the middle part of the two-way threaded rod 7 is a smooth surface, the middle part of the two-way threaded rod 7 is rotatably matched in the circular hole 15, the middle part of the two-way threaded rod 7 is provided with an annular groove 16, bearings are embedded in the opposite sides of the fixed strip 5, the middle part of the two-way threaded rod 7 is fixed in the two bearings, the annular groove 16 is located between the two bearings, a wrench screw 17 is threadedly matched with one side of the fixed strip 5, and a plurality of limiting grooves 18 are circumferentially arranged in the annular groove 16, which facilitates screwing of the wrench screw 17 into the annular groove 16, positioning of the position of the two-way threaded rod 7 after rotation, and reducing the probability of the phenomenon of screw back of the two-way threaded rod 7 extruded by the spring 9 pushing the sliding strip 6.

[0033] Please refer to Figures 2-3 As shown in the drawings, the cutter head body 1 of the embodiment is provided with a mounting groove 19 corresponding to the outer cutter 2 on one side, one end of the outer cutter 2 is located in the mounting groove 19, and a through hole 20 corresponding to the connecting strip 3 is arranged on the inner wall of the mounting groove 19, and the connecting strip 3 is slidingly fitted in the through hole 20, so that the outer cutter 2 is conveniently mounted in the mounting groove 19.

[0034] In addition to the outer cutter 2 and the outer cutter 2 positioning structure part on the cutter head body 1 of the application, other structures on the cutter head body 1 are the same as those disclosed in the cutter head body 1 of a new type of pipe jacking machine cutter head in the Chinese patent with the publication number CN221920974U.

[0035] Working principle: when installing, the connecting strip 3 on the outer cutter 2 is inserted through the through hole 20, the connecting strip 3 is pressed on the inclined surface 11 of the positioning block 10, the positioning block 10 and the limiting strip 8 are elastically slid by the spring 9, the positioning block 10 is elastically clamped into the positioning hole 4 on the connecting strip 3, and the outer cutter 2 is conveniently and quickly installed.

[0036] When the outer cutter 2 needs to be disassembled, the tulip handle screw 17 is rotated, the annular groove 16 is turned out, the sliding strip 6 is driven to slide by rotating the bidirectional threaded rod 7 through the hand wheel 12, the limiting strip 8 and the positioning block 10 are driven to slide by the spring 9, the positioning block 10 slides out of the positioning hole 4, one-person operation is facilitated to quickly release the limiting of the outer cutter 2, one person is facilitated to replace the outer cutter 2, and the problems of excessive parts arranged on the outer cutter 2 and increased replacement cost of the outer cutter 2 are avoided.

[0037] The contents not described in detail in the specification belong to the prior art known by the person skilled in the art, all the electrical appliances in the utility model are powered by external power supply or built-in battery, and the type and specific type of all the electrical appliances in the utility model are not limited, and the person skilled in the art can definitely use the applicable electrical appliance type and specific type and electrical appliance power supply mode according to the common sense in the art.

[0038] The utility model is not limited to the above-mentioned embodiment, any person should know that the structural changes made under the inspiration of the utility model, any technical solution with the same or similar to the utility model falls into the protection scope of the utility model. The technical, shape and structure parts not described in detail in the utility model are all known technologies.

Claims

1. A pipe jacking machine cutter head, characterized in that, Include: The cutter head body (1), the cutter head body (1) one side circumferential array has multiple outer side cutters (2), the outer side cutter (2) one side is equipped with four connecting strips (3), the connecting strip (3) penetrates the side of one end of the cutter head body (1) and is equipped with a positioning hole (4), the cutter head body (1) one side is connected with fixed strip (5), the fixed strip (5) both sides are slidably connected with sliding strip (6), the fixed strip (5) is rotatably connected with the two-way threaded rod (7) that is screwed with two sliding strips (6), the sliding strip (6) one side slidably cooperates with the limiting strip (8), the limiting strip (8) and the sliding strip (6) between them are equipped with multiple springs (9), the limiting strip (8) one side is equipped with the positioning block (10) corresponding with the positioning hole (4).

2. A pipe jacker cutter head according to claim 1, characterised in that, The positioning block (10) one side is equipped with inclined plane (11), the distance between inclined plane (11) and limiting strip (8) gradually increases from the end of cutter head body (1) to the end of cutter head body (1) away.

3. A pipe jacker cutter head according to claim 1, wherein, The two-way threaded rod (7) both ends are equipped with hand wheel (12), the two-way threaded rod (7) both ends screw direction is opposite, the two-way threaded rod (7) both ends penetrate the limiting strip (8) and are respectively matched with two sliding strips (6).

4. A pipe jacker cutter head according to claim 1, wherein, The fixed strip (5) one side is equipped with two guide rods (13), the sliding strip (6), the limiting strip (8) one side are equipped with the guide hole (14) corresponding with the guide rod (13), the sliding strip (6), the limiting strip (8) are slidably fitted on the guide rod (13) through the guide hole (14).

5. A pipe jacker cutter head according to claim 1, wherein, The fixed strip (5) one side is equipped with round hole (15), the two-way threaded rod (7) middle part outside is smooth surface, the two-way threaded rod (7) middle part is rotatably fitted in the round hole (15).

6. A pipe jacker tool head according to claim 1, wherein, The two-way threaded rod (7) middle part is equipped with annular groove (16), the fixed strip (5) one side is screwed with plum handle screw (17), the annular groove (16) is circumferentially arrayed with multiple limiting grooves (18).

7. A pipe jacker tool head according to claim 1, wherein, The cutter head body (1) one side is equipped with the installation groove (19) corresponding with the outer side cutter (2), the outer side cutter (2) one end is located in the installation groove (19).

8. A pipe jacker tool head according to claim 1, wherein, The installation groove (19) inner wall is equipped with the through hole (20) corresponding with the connecting strip (3), the connecting strip (3) is slidably fitted in the through hole (20).

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