Drill rod pushing and pulling mechanism of electric directional drilling machine

Abstract

The utility model relates to the technical field of directional drilling machines, in particular to an electric directional drilling machine drill rod pushing and pulling mechanism which comprises a power head assembly used for driving a drill rod to rotate and a moving driving part used for pushing the power head assembly to move back and forth. The moving driving part comprises a sliding rail arranged on the girder, a bearing plate is arranged on the sliding rail, a pair of gear racks are arranged on the girder in the length direction of the sliding rail, two moving motors are arranged on the bearing plate, and driving gears are arranged on output shafts of the two moving motors. And the two driving gears and the two gear racks are in one-to-one correspondence meshing transmission. The push-and-pull mechanism has the advantages of being stable in push-and-pull and accurate in positioning.

Description

Technical Field

[0001] The present application relates to the technical field of directional drilling rigs, and in particular to a push-pull drill rod mechanism of an electric directional drilling rig. Background Art

[0002] Horizontal directional drilling rigs all adopt a single power head and single clamp structure, and a single drill rod is used for feeding and pulling back during the construction process.

[0003] At present, the patent with the patent publication number CN202645426U discloses a push-pull hydraulic system for a horizontal directional drilling rig, in which the push-pull pump is connected to the push-pull motor through a main reversing valve, the oil outlet of the mud pump is connected to the overflow valve and connected to the mud motor through an electromagnetic reversing valve, and the push-pull motor is composed of an electrically controlled two-point variable motor in parallel; there is also a hydraulically controlled reversing valve, the oil inlet of the hydraulically controlled reversing valve is connected to one outlet of the electromagnetic reversing valve, one oil outlet of the hydraulically controlled reversing valve passes through a one-way valve and is connected to the oil outlet of the push-pull pump, the other oil outlet of the hydraulically controlled reversing valve is connected back to the oil tank pipeline, the control oil circuit of the hydraulically controlled reversing valve is connected to a shuttle valve, and the two connecting ends of the shuttle valve are associated with the pilot pressure control oil circuit of the main reversing valve.

[0004] With respect to the above-mentioned related technologies, the inventors found that the current push-pull rod mechanism of the drilling rig usually adopts the hydraulic drive as in the above-mentioned patent. Although the output torque of the hydraulic system is large, the hydraulic system cannot obtain a constant ratio transmission, resulting in the push-pull positioning of the drill rod being not stable enough. Utility Model Content

[0005] In order to solve the above technical problems, the present application provides a push-pull drill rod mechanism for an electric directional drilling rig, which has the advantages of stable pushing and pulling and precise positioning.

[0006] In order to achieve the above object, the technical solution of the utility model is as follows:

[0007] The utility model discloses a push-pull drill rod mechanism of an electric directional drill, comprising a power head assembly for driving the drill rod to rotate and a moving driving member for pushing the power head assembly to move back and forth.

[0008] The mobile driving component includes a slide rail arranged on the beam, a bearing plate is arranged on the slide rail, a pair of gear bars are arranged on the beam along the length direction of the slide rail, two mobile motors are arranged on the bearing plate, and driving gears are arranged on the output shafts of the two mobile motors, and the two driving gears are meshed and transmitted with the two gear bars in a one-to-one correspondence.

[0009] To realize the above technical solution, when the two moving motors rotate synchronously, the driving gear is driven to rotate. When the driving gear rotates, the other gear bars are meshed, so that the driving gear can move along the gear bar, thereby driving the bearing plate to move back and forth along the slide rail; and the arrangement of the two gear bars and the driving gear makes the force of the single driving gear and the driving motor more balanced, thereby ensuring the stability and practical life of the driving, and the transmission ratio of the gear bar and the driving gear is fixed, thereby ensuring the accuracy of the push-pull positioning.

[0010] As a preferred solution of the present application, the slide rails are arranged on both sides of the beam, and the bearing plate is provided with a pair of buckle plates that are buckled on the slide rails.

[0011] The above technical solution is implemented so that the bearing plate can stably slide on the slide rail under the action of the two buckle plates, thereby ensuring that the power head assembly drives the drill rod to move back and forth.

[0012] As a preferred solution of the present application, the power head assembly includes a box body arranged on a supporting plate, a main shaft is rotatably arranged on the box body, a connecting piece for connecting a drill rod is threaded on the main shaft, and a rotating driving piece for driving the main shaft to rotate is arranged on the box body.

[0013] The above technical solution is realized by rotating the driving member to drive the main shaft to rotate, thereby driving the drill rod to rotate through the connecting member.

[0014] As a preferred solution of the present application, the rotary drive member includes a rotary motor disposed on a housing, and an output shaft of the rotary motor is transmitted to the main shaft through a gear set.

[0015] The above technical solution is realized by rotating the motor to drive the gear set to rotate and then drive the main shaft to rotate, so that after the adjustment of the gear set, the main shaft outputs a large torque, thereby ensuring the drilling effect of the subsequent drill rod.

[0016] As a preferred solution of the present application, the connecting member includes an adapter shaft threaded on the main shaft, a connecting head threaded on the adapter shaft, and a conical thread head is provided on the connecting head.

[0017] To implement the above technical solution, the size of the tapered thread head on the connector can be changed by replacing the connector to meet the connection requirements of drill rods of different models and sizes, thereby improving its adaptability.

[0018] As a preferred solution of the present application, a cooling fan for blowing air toward the power head is provided on the supporting plate.

[0019] The implementation of the above technical solution reduces the serious heating of the rotating motor due to long-term use, which may lead to the burning of the motor.

[0020] In summary, the present application includes at least one of the following beneficial technical effects:

[0021] That is, when the two mobile motors rotate synchronously, they drive the driving gear to rotate. When the driving gear rotates, the other gear bars are meshed, so that the driving gear can move along the gear bar, thereby driving the bearing plate to move back and forth along the slide rail; and the arrangement of the two gear bars and the driving gear makes the force of the single driving gear and the driving motor more balanced, thereby ensuring the stability and practical life of the driving. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0024] Figure 2 It is a structural schematic diagram of the mobile driving component in an embodiment of the present application.

[0025] Figure 3 It is a schematic diagram of the structure of the power head assembly in the embodiment of the present application.

[0026] Figure numerals: 1. beam; 2. power head assembly; 21. box; 22. main shaft; 23. rotating motor; 24. adapter shaft; 25. connector; 26. tapered thread head; 3. moving drive member; 31. slide rail; 32. load-bearing plate; 33. buckle plate; 34. gear bar; 35. moving motor; 36. driving gear. DETAILED DESCRIPTION

[0027] The following is combined with Figure 1-3 This application is described in further detail.

[0028] The present application embodiment discloses a push-pull drill rod mechanism for an electric directional drilling rig. Figure 1 The push-pull drill rod mechanism of the electric directional drilling rig includes a power head assembly 2 for driving the drill rod to rotate and a moving drive member for pushing the power head assembly 2 to move back and forth.

[0029] The power head assembly 2 includes a housing 21, on which a main shaft 22 is rotatably arranged, on which a connecting piece for connecting a drill rod is screwed, and on which a rotating driving piece for driving the main shaft 22 to rotate is arranged, and the rotating driving piece includes a rotating motor 23 arranged on the housing 21, and the output shaft of the rotating motor 23 is transmitted to the main shaft 22 through a gear set, that is, the rotating motor 23 drives the gear set to rotate and then drives the main shaft 22 to rotate, so that after the adjustment of the gear set, the main shaft 22 outputs a large torque, thereby ensuring the drilling effect of the subsequent drill rod. The connecting piece includes an adapter shaft 24 screwed on the main shaft 22, on which a connector 25 is screwed, and on which a conical threaded head 26 is arranged, that is, by replacing the connector 25, the size of the conical threaded head 26 on the connector 25 can be changed to meet the connection requirements of drill rods of different models and sizes, thereby improving its adaptability. In order to prevent the rotating motor 23 from being seriously heated due to long-term use and causing the motor to burn out, a cooling fan for blowing air to the power head is provided on the bearing plate 32.

[0030] The mobile driving member 3 includes a pair of slide rails 31 arranged on the beam 1, the two slide rails 31 are arranged on both sides of the beam 1, a bearing plate 32 is arranged on the two slide rails 31, the power head assembly 2 is arranged on the bearing plate 32, and a pair of buckle plates 33 buckled on the slide rails 31 are arranged on the bearing plate 32, so that the bearing plate 32 can stably slide on the slide rails 31 under the action of the two buckle plates 33, thereby ensuring that the power head assembly 2 drives the drill rod to move back and forth. A pair of gear bars 34 are arranged on the beam 1 along the length direction of the slide rails 31, and the two gear bars 34 are respectively arranged above the two slide rails 31. Two mobile motors 35 are arranged on the bearing plate 32, and driving gears 36 are arranged on the output shafts of the two mobile motors 35. The two driving gears 36 are meshed and driven with the two gear bars 34 in a one-to-one correspondence, that is, when the two mobile motors 35 rotate synchronously, the driving gears 36 are driven to rotate. When the driving gear 36 rotates, the other gear bars 34 mesh, so that the driving gear 36 can move along the gear bar 34, thereby driving the bearing plate 32 to move back and forth along the slide rail 31; and the arrangement of two gear bars 34 and the driving gear 36 makes the force of the single driving gear 36 and the driving motor more balanced, thereby ensuring the stability and practical life of the driving thereof. And the transmission ratio of the gear bar 34 and the driving gear 36 is fixed, thereby ensuring the accuracy of the push-pull positioning.

[0031] The implementation principle of the push-pull drill rod mechanism of an electric directional drilling rig in the embodiment of the present application is as follows: when the two mobile motors 35 rotate synchronously, the driving gear 36 is driven to rotate. When the driving gear 36 rotates, the other gear bars 34 are meshed, so that the driving gear 36 can move along the gear bar 34, thereby driving the bearing plate 32 to move back and forth along the slide rail 31; and the arrangement of the two gear bars 34 and the driving gear 36 makes the force of the single driving gear 36 and the driving motor more balanced, thereby ensuring the stability and practical life of the driving thereof.

[0032] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. The push-pull drill rod mechanism of the electric directional drilling rig is characterized by: It comprises a power head assembly (2) for driving the drill rod to rotate and a moving driving member for driving the power head assembly (2) to move back and forth; The mobile driving member (3) comprises a slide rail (31) arranged on a beam (1), a bearing plate being arranged on the slide rail (31), a pair of gear bars (34) being arranged on the beam (1) along the length direction of the slide rail (31), two mobile motors (35) being arranged on the bearing plate (32), a driving gear (36) being arranged on the output shafts of the two mobile motors (35), and the two driving gears (36) being meshed and transmitted with the two gear bars (34) in a one-to-one correspondence.

2. The push-pull drill rod mechanism of the electric directional drilling rig according to claim 1, characterized in that: The slide rails (31) are arranged on both sides of the beam (1), and the bearing plate (32) is provided with a pair of buckle plates (33) buckled on the slide rails (31).

3. The push-pull drill rod mechanism of the electric directional drilling rig according to claim 1, characterized in that: The power head assembly (2) comprises a box body (21) arranged on a supporting plate (32), a main shaft (22) being rotatably arranged on the box body (21), a connecting piece for connecting a drill rod being screwed on the main shaft (22), and a rotating driving piece for driving the main shaft (22) to rotate being arranged on the box body (21).

4. The push-pull drill rod mechanism of the electric directional drilling rig according to claim 3 is characterized in that: The rotary drive member comprises a rotary motor (23) arranged on a housing (21), and an output shaft of the rotary motor (23) is driven by a main shaft (22) through a gear set.

5. The push-pull drill rod mechanism of the electric directional drilling rig according to claim 3 is characterized in that: The connecting member comprises a transfer shaft (24) threadedly connected to a main shaft (22); a connecting head (25) threadedly connected to the transfer shaft (24); and a conical thread head (26) provided on the connecting head (25).

6. The push-pull drill rod mechanism of the electric directional drilling rig according to claim 1, characterized in that: The bearing plate (32) is provided with a cooling fan for blowing air toward the power head.

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