Horizontal directional drilling and tube drawing pneumatic tube ramming hammer balance car

Abstract

The utility model relates to the technical field of pipeline engineering, in particular to a horizontal directional pipe drilling and drawing pneumatic pipe ramming hammer balance car which comprises a channel steel plate arranged above a car body, a plurality of spring shock absorbers are arranged between the car body and the channel steel plate, a hoop seat is arranged on the channel steel plate, a pipe ramming hammer is arranged in the hoop seat, and the pipe ramming hammer is arranged in the hoop seat. The inner wall of the hoop seat is further provided with a rubber pad which reduces friction between the pipe ramming hammer and the hoop seat and provides a certain damping, buffering and protecting effect, and a plurality of sets of ramming force detecting mechanisms which buffer horizontal impact force of the pipe ramming hammer and detect ramming force deviation are arranged between the vehicle body and the channel steel plate. When the pipe ramming hammer is used for ramming a pipeline, generated counter-acting force is absorbed and damped through the spring damper, so that the stability of the pipe ramming hammer is maintained, vertical supporting force is provided for the pipe ramming hammer, and the situation that the acting force of the pipe ramming hammer is perpendicular to the axis of the pipeline, so that ramming force is reduced and not concentrated, and a welded junction of the pipeline cracks is avoided.

Description

Technical Field

[0001] This utility model relates to the field of pipeline engineering technology, and in particular to a horizontal directional drilling pipe pulling pneumatic ramming hammer balance vehicle. Background Technology

[0002] Horizontal directional drilling (HDD) is a trenchless construction method for laying underground pipelines. It involves drilling a pilot hole in the ground using a drilling rig, then replacing the drill bit with a reamer to gradually enlarge the hole diameter, and finally pulling the pipeline into the hole to complete the pipeline installation. If the pipeline or the equipment becomes obstructed during HDD construction and cannot move normally, a pipe rammer is required to provide additional force.

[0003] Because the pipe rammer uses an air compressor to generate power and hammers the end of the pipe to increase auxiliary thrust, it generates a horizontal thrust on the pipe when rammering. At this time, the force of the pipe rammer is particularly large. When installed at the end of the pipe, the pipe rammer has no vertical support during rammering, which can easily cause the force to be perpendicular to the pipe axis, resulting in a reduction in rammering force. On the other hand, because the rammering force is not concentrated, it can easily cause the pipe weld to crack, requiring the pipe to be recut and reconnected, which delays the progress on site. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a horizontal directional drilling and pipe pulling pneumatic tamping hammer balance vehicle, which solves the technical problem that the existing tamping hammer has no vertical support, resulting in the force being perpendicular to the pipe axis, reducing the tamping force and making the tamping force non-concentrated. It achieves the purpose of providing vertical support for the tamping hammer and avoiding the dispersion and reduction of tamping force.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a horizontal directional drilling pneumatic tamping hammer balance vehicle, including a channel steel plate installed on the top of the vehicle body, multiple spring shock absorbers installed between the vehicle body and the channel steel plate, a clamp seat installed on the channel steel plate, a tamping hammer installed inside the clamp seat, and a rubber pad provided on the inner wall of the clamp seat to reduce friction between the tamping hammer and the clamp seat and provide a certain shock absorption and buffering protection effect, and multiple sets of tamping force detection mechanisms are provided between the vehicle body and the channel steel plate to buffer the horizontal impact force of the tamping hammer and detect the tamping force deviation.

[0006] A further improvement is that the spring shock absorber includes a shock-absorbing spring installed between the vehicle body and the channel steel plate, a shock-absorbing sleeve installed inside the shock-absorbing spring on the vehicle body, fluid being filled inside the shock-absorbing sleeve, a piston rod slidably connected to the top of the shock-absorbing sleeve and connected to the bottom of the channel steel plate, a compression piston slidably connected to the bottom of the piston rod and connected to the inner wall of the shock-absorbing sleeve, a plurality of damping holes being annularly opened on the compression piston, and a sealing piston being installed in the lower part of the shock-absorbing sleeve.

[0007] A further improvement is that nitrogen gas is injected between the bottom of the damping sleeve and the sealing piston, and the fluid injected between the sealing piston and the top of the damping sleeve is hydraulic oil, and the damping orifice is a tapered orifice that is wider at the bottom and narrower at the top.

[0008] A further improvement is that the inner wall of the shock-absorbing sleeve has a serpentine hole extending upwards from the middle, and both ends of the serpentine hole extend into the interior of the shock-absorbing sleeve.

[0009] A further improvement is that the clamp seat includes a base mounted on a channel steel plate, a flip cover is hinged on the base, multiple mounting plates are symmetrically mounted on the sides of the base and the flip cover, and locking bolts are threaded into the threaded holes on the mounting plates.

[0010] A further improvement is that the tamping force detection mechanism includes a groove block installed on the vehicle body, a guide rod installed inside the groove block, a slider slidably connected inside the groove block and sleeved on the guide rod, buffer springs sleeved on the outside of the guide rod installed between the inner walls of both sides of the groove block and the two sides of the slider, hinge seats installed on the top of the slider and the bottom of the channel steel plate respectively, and a connecting arm rotatably connected between the two hinge seats, electrode plates installed on the two sides of the slider that fit against the inner wall of the groove block and in the mounting groove opened on the inner wall of the groove block, and an alarm electrically connected to the electrode plates installed on the groove block.

[0011] By employing the above technical solution, this utility model provides a horizontal directional drilling pipe pulling pneumatic tamping hammer balancing vehicle, which has at least the following beneficial effects:

[0012] 1. When the ramming hammer strikes the pipeline, the reaction force generated by it is absorbed and damped by the spring shock absorber, thereby maintaining the stability of the ramming hammer and providing vertical support for the ramming hammer. This prevents the force of the ramming hammer from being perpendicular to the pipeline axis, which would reduce or concentrate the ramming force and cause cracking of the pipeline weld.

[0013] 2. When the hydraulic oil is compressed and flows through the damping hole of the conical structure on the extrusion piston, it accelerates, thereby generating a larger damping force. This allows for better absorption and damping of the impact force. Furthermore, the conical damping hole can disperse the pressure borne by the extrusion piston when it is impacted, reducing stress concentration. It also guides the hydraulic oil to form a specific flow path, reducing turbulence and eddy currents in the hydraulic oil, lowering energy loss, and improving the overall working efficiency of the spring shock absorber.

[0014] 3. If the tamping force of the ramming hammer deviates, its reaction force will also deviate, which will push the slider on one side to move backward by a larger range until the electrode plate on the slider contacts the electrode plate on the groove block and sends an electrical signal to the alarm, thereby causing the alarm to sound and reminding the worker to observe the hammering direction of the ramming hammer in time, so as to realize the detection of the tamping force direction of the ramming hammer. Attached Figure Description

[0015] The accompanying drawings, which are provided to further illustrate this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application.

[0016] In the attached diagram:

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a cross-sectional view of the internal structure of the spring shock absorber of this utility model;

[0019] Figure 3 This is a bottom view of the internal structure of the shock-absorbing sleeve of this utility model.

[0020] Figure 4 This is a schematic diagram of the independent structure of the clamp seat of this utility model;

[0021] Figure 5 This is a schematic diagram of the independent cross-sectional structure of the tamping force detection mechanism of this utility model.

[0022] In the diagram: 1. Vehicle body; 2. Channel steel plate;

[0023] 3. Spring shock absorber; 31. Shock-absorbing spring; 32. Shock-absorbing sleeve; 33. Piston rod; 34. Compression piston; 35. Damping orifice; 36. Sealing piston; 37. Serpentine orifice;

[0024] 4. Clamp seat; 41. Base; 42. Flip cover; 43. Mounting plate; 44. Locking bolt;

[0025] 5. Pipe ramming hammer; 6. Rubber pad;

[0026] 7. Compactor testing mechanism; 71. Groove block; 72. Guide rod; 73. Slider; 74. Buffer spring; 75. Hinge seat; 76. Connecting arm; 77. Electrode plate; 78. Alarm. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Example 1

[0029] Addressing the issues of existing pipe tamping hammers lacking vertical support, resulting in forces perpendicular to the pipe axis, reduced tamping force, and uneven force concentration, this embodiment provides a horizontal directional drilling and pipe pulling pneumatic pipe tamping hammer balancing vehicle. Please refer to... Figures 1-5 This embodiment provides a horizontal directional drilling pneumatic tamping hammer balancing vehicle, which can provide vertical support for the tamping hammer and prevent the tamping force from being dispersed and reduced. The horizontal directional drilling pneumatic tamping hammer balancing vehicle includes a channel steel plate 2 mounted on top of the vehicle body 1. Multiple spring shock absorbers 3 are installed between the vehicle body 1 and the channel steel plate 2. A clamp seat 4 is mounted on the channel steel plate 2, and the tamping hammer 5 is installed inside the clamp seat 4. The inner wall of the clamp seat 4 is also provided with rubber pads 6 to reduce friction between the tamping hammer 5 and the clamp seat 4 and to provide a certain shock absorption and buffering effect. Multiple sets of tamping force detection mechanisms 7 are installed between the vehicle body 1 and the channel steel plate 2 to buffer the horizontal impact force of the tamping hammer 5 and detect the tamping force deviation. The clamp seat 4 fixes the ramming hammer 5 to the channel steel plate 2, and the rubber pad 6 inside the clamp seat 4 increases the friction, improves the stability of the fixation, and avoids direct friction between the ramming hammer 5 and the clamp seat 4, which would cause damage to the ramming hammer 5. When the ramming hammer 5 rams the pipeline, the reaction force generated is absorbed and damped by the spring shock absorber 3, thereby maintaining the stability of the ramming hammer 5 and providing vertical support for the ramming hammer 5, preventing the force of the ramming hammer 5 from being perpendicular to the pipeline axis, which would reduce and concentrate the ramming force and cause cracking of the pipeline weld.

[0030] To provide more stable support for the ramming hammer 5 and further enhance the buffering and damping effect of the spring shock absorber 3 on the reaction force of the ramming hammer 5 during impact, the spring shock absorber 3 in this device includes a shock-absorbing spring 31 installed between the vehicle body 1 and the channel steel plate 2. A shock-absorbing sleeve 32 is installed inside the shock-absorbing spring 31 on the vehicle body 1. The shock-absorbing sleeve 32 is filled with fluid. A piston rod 33 is slidably connected to the top of the shock-absorbing sleeve 32 and connected to the bottom of the channel steel plate 2. A compression piston 34 is installed at the bottom of the piston rod 33 and slidably connected to the inner wall of the shock-absorbing sleeve 32. The compression piston 34 has multiple damping holes 35 arranged in a ring on it. A sealing piston 36 is installed in the lower part of the shock-absorbing sleeve 32. Nitrogen gas is injected between the bottom of the shock-absorbing sleeve 32 and the sealing piston 36, and the fluid injected between the sealing piston 36 and the top of the shock-absorbing sleeve 32 is hydraulic oil. The damping holes 35 are tapered holes that are wider at the bottom and narrower at the top.

[0031] When the ramming hammer 5 strikes, the reaction force is transmitted to the channel steel plate 2, compressing the damping spring 31 to move downwards and pushing the piston rod 33 to drive the extrusion piston 34 to move downwards along the inner wall of the damping sleeve 32. During this process, hydraulic oil surges upwards through the damping hole 35, utilizing the viscous resistance of the hydraulic oil itself and being accelerated within the damping hole 35 (wide at the bottom and narrow at the top), thereby generating a larger damping force. This better absorbs and dampens the impact force. The tapered damping hole 35 can disperse the pressure borne by the extrusion piston 34 when it is impacted, reducing stress concentration and guiding the hydraulic oil to form a specific flow path, reducing turbulence and eddy currents in the hydraulic oil, reducing energy loss, and improving the overall working efficiency of the spring damper 3. Furthermore, the pressure generated by the downward movement of the extrusion piston 34 pushes the sealing piston 36 downwards and compresses the nitrogen gas at the bottom of the damping sleeve 32, absorbing some of the impact force. Together with the damping spring 31, it bears the load, improving the buffering and damping effect of the spring damper 3, enhancing the overall stability of the ramming hammer 5, and providing it with higher quality vertical support force.

[0032] As hydraulic oil is repeatedly compressed during operation, its temperature gradually increases. Excessive temperature can cause the viscosity of the hydraulic oil to decrease, thus affecting the overall damping effect. Therefore, the inner wall of the damping sleeve 32 in this device has a serpentine hole 37 extending upward from the middle, with both ends of the serpentine hole 37 extending into the interior of the damping sleeve 32. As the hydraulic oil is squeezed and flows within the serpentine hole 37, the contact area between the hydraulic oil and the inner wall of the damping sleeve 32 is increased, allowing the heat of the hydraulic oil to be dissipated more quickly to the outer wall of the damping sleeve 32 and then into the air, thereby cooling the hydraulic oil. The device also guides the hydraulic oil to flow in a spiral path, with the squeezed hot oil rising along the serpentine hole 37, while the relatively cooler hydraulic oil is replenished to the bottom under pressure, forming a natural convection circulation. This makes the temperature of the hydraulic oil more uniform, further improving the heat dissipation efficiency and ensuring that the spring damper 3 always maintains relatively stable performance.

[0033] To facilitate quick and easy installation and fixation of the ramming hammer 5, the clamp seat 4 in this device includes a base 41 mounted on the channel steel plate 2. A flip cover 42 is hinged to the base 41. Multiple mounting plates 43 are symmetrically mounted on the sides of both the base 41 and the flip cover 42. Locking bolts 44 are threaded into the threaded holes on the mounting plates 43. When installing the ramming hammer 5, the flip cover 42 is opened, the ramming hammer 5 is placed in the base 41, the flip cover 42 is then closed, and the locking bolts 44 are screwed into the threaded holes on the mounting plates 43 to quickly complete the installation and fixation of the ramming hammer 5.

[0034] Example 2

[0035] Because the pipe tamping hammer 5 may experience a slight change in its hammering direction due to reaction force during prolonged use, leading to deflection of the tamping force, dispersion of the tamping force, and even damage to the pipe, therefore, based on Embodiment 1, as follows... Figures 1-5 As shown, the device is also equipped with a tamping force detection mechanism 7, which includes a groove block 71 installed on the vehicle body 1. A guide rod 72 is installed inside the groove block 71. A slider 73 is slidably connected inside the groove block 71 and sleeved on the guide rod 72. Buffer springs 74 sleeved on the outside of the guide rod 72 are installed between the inner walls of both sides of the groove block 71 and the two sides of the slider 73. Hinges 75 are installed on the top of the slider 73 and the bottom of the channel steel plate 2, respectively. A connecting arm 76 is rotatably connected between the two hinges 75. Electrode plates 77 are installed on the two sides of the slider 73 that are in contact with the inner wall of the groove block 71 and in the mounting grooves opened on the inner wall of the groove block 71. An alarm 78 electrically connected to the electrode plates 77 is installed on the groove block 71.

[0036] When the reaction force generated by the ramming hammer 5 is transmitted to the hinge seat 75 through the channel steel plate 2, it drives the connecting arm 76 to rotate and pushes the slider 73 to move backward along the groove opened on the slot block 71 under the restriction of the guide rod 72, and squeezes the buffer spring 74. The buffer spring 74 absorbs and releases the impact force, thereby assisting the spring shock absorber 3 to provide more stable vertical support for the ramming hammer 5. If the ramming force of the ramming hammer 5 deviates, its reaction force also deviates, which will push the slider 73 on one side to move backward by a larger range until the electrode plate 77 on the slider 73 contacts the electrode plate 77 on the slot block 71 and sends an electrical signal to the alarm 78, thereby causing the alarm 78 to sound an alarm, reminding the worker to observe the ramming direction of the ramming hammer 5 in time, so as to realize the detection of the ramming force direction of the ramming hammer 5.

[0037] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A horizontal directional drilling and pipe pulling pneumatic tamping hammer balancing vehicle, comprising a channel steel plate (2) mounted on the vehicle body (1), characterized in that: Multiple spring shock absorbers (3) are installed between the vehicle body (1) and the channel steel plate (2). A clamp seat (4) is installed on the channel steel plate (2). A ramming hammer (5) is installed inside the clamp seat (4). The inner wall of the clamp seat (4) is also provided with a rubber pad (6) to reduce the friction between the ramming hammer (5) and the clamp seat (4) and to provide a certain shock absorption and buffer protection effect. Multiple sets of ramming force detection mechanisms (7) are provided between the vehicle body (1) and the channel steel plate (2) to buffer the horizontal impact force of the ramming hammer (5) and to detect the ramming force deviation.

2. The horizontal directional drilling pneumatic tamping hammer balancing vehicle according to claim 1, characterized in that: The spring shock absorber (3) includes a shock-absorbing spring (31) installed between the vehicle body (1) and the channel steel plate (2). A shock-absorbing sleeve (32) is installed on the vehicle body (1) inside the shock-absorbing spring (31). Fluid is filled in the shock-absorbing sleeve (32). A piston rod (33) with its top connected to the bottom of the channel steel plate (2) is slidably connected to the shock-absorbing sleeve (32). A compression piston (34) is slidably connected to the inner wall of the shock-absorbing sleeve (32) at the bottom of the piston rod (33). Multiple damping holes (35) are opened in a ring on the compression piston (34). A sealing piston (36) is installed in the lower part of the shock-absorbing sleeve (32).

3. A horizontal directional drilling pneumatic tamping hammer balancing vehicle according to claim 2, characterized in that: Nitrogen gas is injected between the bottom of the damping sleeve (32) and the sealing piston (36), and the fluid injected between the sealing piston (36) and the top of the damping sleeve (32) is hydraulic oil. The damping hole (35) is a tapered hole that is wider at the bottom and narrower at the top.

4. A horizontal directional drilling pneumatic tamping hammer balancing vehicle according to claim 2, characterized in that: The inner wall of the shock-absorbing sleeve (32) is provided with a serpentine hole (37) from the middle upward, and both ends of the serpentine hole (37) extend into the interior of the shock-absorbing sleeve (32).

5. A horizontal directional drilling pneumatic tamping hammer balancing vehicle according to claim 1, characterized in that: The clamp seat (4) includes a base (41) mounted on a channel steel plate (2), a flap (42) is hinged on the base (41), and multiple mounting plates (43) are symmetrically mounted on the sides of the base (41) and the flap (42), and locking bolts (44) are threaded into the threaded holes on the mounting plates (43).

6. A horizontal directional drilling pneumatic tamping hammer balancing vehicle according to claim 1, characterized in that: The tamping force detection mechanism (7) includes a groove block (71) installed on the vehicle body (1), a guide rod (72) installed in the groove block (71), a slider (73) slidably connected in the groove block (71) and sleeved on the guide rod (72), buffer springs (74) sleeved on the outside of the guide rod (72) are installed between the inner walls on both sides of the groove block (71) and the two sides of the slider (73), and hinge seats (75) are respectively installed on the top of the slider (73) and the bottom of the channel steel plate (2), and a connecting arm (76) is rotatably connected between the two hinge seats (75). Electrode plates (77) are installed in the two sides of the slider (73) that are in contact with the inner wall of the groove block (71) and in the mounting groove opened on the inner wall of the groove block (71), and an alarm (78) electrically connected to the electrode plate (77) is installed on the groove block (71).

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