CN215256032U

CN215256032U - Traveling trolley position monitoring and automatic speed reducing system for trenchless drilling machine

Info

Publication number: CN215256032U
Application number: CN202121357007.0U
Authority: CN
Inventors: 徐彬彬; 靳超; 王晓晗; 贾护
Original assignee: Wuxi Drillto Trenchless Co ltd
Current assignee: Wuxi Drillto Trenchless Co ltd
Priority date: 2021-06-18
Filing date: 2021-06-18
Publication date: 2021-12-21
Anticipated expiration: 2031-06-18

Abstract

The invention relates to a position monitoring and automatic speed reducing system of a traveling trolley for a trenchless drilling rig, which comprises a drilling rig, the traveling trolley, a push-pull handle and a push-pull pump, wherein a rack is arranged on the drilling rig, the traveling trolley is movably connected with the drilling rig, a push-pull motor is arranged on the traveling trolley, the push-pull handle controls the traveling of the traveling trolley, and the push-pull pump is positioned on the traveling trolley; the device also comprises a controller, a display and a position encoder; the controller is respectively electrically connected with the push-pull handle, the push-pull valve, the display and the position encoder; the position encoder is positioned on the walking trolley. The invention can obtain the accurate position of the walking trolley on the drill frame without calibration; and the walking trolley is controlled by the controller to gradually decelerate in the deceleration zone until the walking trolley stops through the setting of the display on the deceleration zone, so that the construction safety is ensured, and the construction efficiency is improved.

Description

Traveling trolley position monitoring and automatic speed reducing system for trenchless drilling machine

Technical Field

The invention relates to the field of trenchless drilling machines, in particular to a traveling trolley position monitoring and automatic deceleration system for a trenchless drilling machine.

Background

In the horizontal directional drilling machine sold in the market at present, the front and back running positions of a power head on a drilling rig are mostly judged by visual inspection and experience of an operator, the drilling machine is often constructed at night, light is dark, sight is poor, and particularly for medium and large drilling machines, the position of the drilling rig is difficult to accurately judge due to the fact that the drilling rig is long.

When the power head runs to the front end or the rear end of the drilling rig, an operator can suddenly stop the power head to run, so that the power head is very easy to be greatly impacted, or the mechanical limit of the drilling rig is damaged by inertia, and even serious accidents that the power head falls down from the rear end of the drilling rig due to untimely stopping can occur.

Compared with the power head position detection realized by using a double-pulse tachometer sensor (application publication No. CN110552618A), the position detection method is easy to generate accumulated errors to cause the position of the power head to be inaccurate, and although the position detection method is used for correcting by front and rear limit switches, the position between the two limit switches cannot be accurately detected. In addition, the detection system has more components and low reliability, and can generate large accumulated errors when the limit switch is damaged or does not reach the position of the limit switch during construction, and the system cannot judge.

Disclosure of Invention

The purpose of the invention is: the system can obtain the accurate position of the walking trolley on a drilling rig without calibration; and the walking trolley is controlled by the controller to gradually decelerate in the deceleration zone until the walking trolley stops through the setting of the display on the deceleration zone, so that the construction safety is ensured, and the construction efficiency is improved.

In order to achieve the above purpose, the present invention provides the following technical solutions:

a position monitoring and automatic speed reducing system of a traveling trolley for a trenchless drilling rig comprises a drilling rig, the traveling trolley, a push-pull handle and a push-pull pump, wherein a rack is arranged on the drilling rig, the traveling trolley is movably arranged on the drilling rig and is movably connected with the drilling rig, a push-pull motor is arranged on the traveling trolley, the push-pull handle controls the traveling trolley to move, and the push-pull pump is positioned on the traveling trolley; the device also comprises a controller, a display and a position encoder; the controller is respectively electrically connected with the push-pull handle, the push-pull valve, the display and the position encoder; the position encoder is positioned on the walking trolley and comprises an encoder, a pin shaft and a nylon gear, and the nylon gear corresponds to the rack.

Furthermore, the pin shaft is coaxially connected with the detection end of the encoder, the nylon gear is coaxially connected with the pin shaft through a key, and the nylon gear is made of nylon.

Furthermore, the position encoder is vertically arranged on the walking trolley, the nylon gear is located at the bottom end of the walking trolley, and gear teeth of the nylon gear are meshed with teeth of the rack.

Further, the position encoder further comprises a fixing seat and a bottom plate, the encoder is detachably connected with the fixing seat, the fixing seat is detachably connected with the bottom plate, and the bottom plate is located on the walking trolley.

Furthermore, the fixing seat is sleeved on the periphery of the detection end of the encoder, and the pin shaft is movably connected with the central hole of the bottom plate through the shaft sleeve.

Further, the display is arranged at a position close to the push-pull handle; the push-pull valve is a proportional valve; the encoder is specifically a multi-turn absolute value encoder.

Furthermore, a feeding coil and a back-dragging coil are respectively arranged at two ends of the push-pull valve, and the feeding coil and the back-dragging coil are both electrically connected with the controller; the push-pull pump is respectively connected with the push-pull motor and the push-pull valve oil way.

The invention has the beneficial effects that: a traveling trolley position monitoring and automatic deceleration system for a trenchless drilling machine is characterized in that a controller, a display and a position encoder are used in a matched mode, and the system can obtain the accurate position of a traveling trolley on a drilling rig through the position encoder without calibration; and the speed reduction area of the walking trolley is set through the display, and the controller controls the feeding coil and the back-dragging coil of the push-pull valve to gradually reduce the speed of the walking trolley in the speed reduction area until the walking trolley stops, so that the accident that the power head falls off from the drill frame is avoided, the construction safety can be ensured, and the construction efficiency is improved.

Drawings

Fig. 1 is a schematic top view of a traveling trolley position monitoring and automatic deceleration system for a trenchless drilling machine according to the present invention.

Fig. 2 is a schematic view of a main view of the traveling trolley position monitoring and automatic deceleration system for the trenchless drilling machine.

Fig. 3 is a structural half sectional view of a position encoder of the traveling trolley position monitoring and automatic deceleration system for the trenchless drilling machine.

Fig. 4 is a schematic diagram of a control principle module of the traveling trolley position monitoring and automatic deceleration system for the trenchless drilling machine.

Fig. 5 is a hydraulic schematic diagram of a traveling trolley position monitoring and automatic deceleration system for the trenchless drilling machine.

In the figure: 1. a drilling frame, 2, a walking trolley; 3. a rack; 4. a holder; 5. a push-pull motor; 6. a push-pull handle; 7. a push-pull valve; 71. a feed coil; 72. back dragging the coil; 9. a push-pull pump; 10. a controller; 11. a display; 12. a position encoder; 121. an encoder; 122. a fixed seat; 123. a base plate; 124. a pin shaft; 125. a nylon gear; 126. a key.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1 to 5, the traveling trolley position monitoring and automatic speed reducing system for the trenchless drilling rig comprises a drilling rig 1, a traveling trolley 2, a push-pull handle 6 and a push-pull pump 9, wherein a rack 3 is arranged on the drilling rig 1, the traveling trolley 2 is movably connected with the drilling rig 1, a push-pull motor 5 is arranged on the traveling trolley 2, the push-pull handle 6 controls the traveling of the traveling trolley 2, the push-pull pump 9 is arranged on the traveling trolley 2, the push-pull pump 9 is used for supplying hydraulic oil to the push-pull motor 5 to realize the rotation of the push-pull motor 5 so as to drive the traveling trolley 2 to move, and the push-pull valve 7 is used for controlling the flow of the oil to the push-pull motor 5; the device also comprises a controller 10, a display 11 and a position encoder 12; the controller 10 is respectively electrically connected with the push-pull handle 6, the push-pull valve 7, the display 11 and the position encoder 12, the controller 10 is used for data processing and centralized control, and the display 11 is a touch display screen which can display data and the position of the trolley and can input instructions; the position encoder 12 is located on the traveling trolley 2, the position encoder 12 is used for monitoring the specific position of the traveling trolley 2 in real time, the position encoder 12 comprises an encoder 121, a pin shaft 124 and a nylon gear 125, the nylon gear 125 corresponds to the rack 3 in position, and the nylon gear 125 is in contact with the rack 3.

The pin shaft 124 is coaxially connected with the detection end of the encoder 121, the nylon gear 125 is coaxially connected with the pin shaft 124 through a key 126, the key 126 is used for preventing the nylon gear 125 and the pin shaft 124 from slipping, the nylon gear 125 is made of nylon, is soft in texture and is silent in operation.

The position encoder 12 is vertically arranged on the traveling trolley 2, the nylon gear 125 is located at the bottom end of the traveling trolley 2, gear teeth of the nylon gear 125 are meshed with teeth of the rack 3, and when the traveling trolley 2 moves, the rack 3 can drive the nylon gear 125 to rotate.

The position encoder 12 further comprises a fixing seat 122 and a bottom plate 123, the encoder 121 is detachably connected with the fixing seat 122, the fixing seat 122 is detachably connected with the bottom plate 123, the bottom plate 123 is located on the walking trolley 2, and the bottom plate 123 is used for fixing the position encoder 12 on the walking trolley 2.

The fixing seat 122 is sleeved on the periphery of the detection end of the encoder 121, the fixing seat 122 plays a role in fixing and protecting, and the pin shaft 124 is movably connected with a central hole of the bottom plate 123 through a shaft sleeve.

The display 11 is arranged at a position close to the push-pull handle 6; the push-pull valve 7 is specifically a proportional valve and can control the flow of flowing hydraulic oil; the encoder 121 is specifically a multi-turn absolute value type encoder for detecting the number of turns and the angle of rotation.

A feeding coil 71 and a back-dragging coil 72 are respectively arranged at two ends of the push-pull valve 7, the feeding coil 71 and the back-dragging coil 72 are both electrically connected with the controller 10, and the feeding coil 71 and the back-dragging coil 72 are both used for controlling the direction and the flow rate of the push-pull valve 7; the push-pull pump 9 is respectively connected with the push-pull motor 5 and the push-pull valve 7 through oil passages.

The working principle of the invention is as follows: when the walking trolley 2 needs to move on the drill frame 1, an operator holds the push-pull handle 6 for control, and the feeding action or the back dragging action of the walking trolley 2 is realized; when the walking trolley 2 moves relative to the drill rig 1, the teeth of the rack 3 drive the nylon gear 125 of the position encoder 12 to rotate, the pin shaft 124 rotates along with the nylon gear 125, the detection end of the encoder 121 is further driven to rotate, the encoder 121 senses the moving distance of the walking trolley 2 according to the number of rotation turns and the rotation angle of the detection end, information is sent to the controller 10, and the controller 10 can obtain the specific position of the walking trolley 2 on the drill rig 1; when the travelling trolley 2 moves to a set deceleration area on the drill rig 1, the controller 10 controls the feeding coil 71 or the back-dragging coil 72 through an electric signal to realize the flow control of hydraulic oil of the push-pull valve 7, further realize the reduction and the cutoff of the flow of the oil supplied to the push-pull motor 5 by the push-pull pump 9, finally realize the gradual deceleration and the final stop of the travelling trolley 2, avoid rigid collision and ensure safety.

In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The above examples are intended to further illustrate the present invention, but are not intended to limit the invention to these specific embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be understood to be within the protection scope of the present invention.

Claims

1. A traveling trolley position monitoring and automatic speed reducing system for a trenchless drilling rig comprises a drilling rig (1), a traveling trolley (2), a push-pull handle (6) and a push-pull pump (9), wherein a rack (3) is arranged on the drilling rig (1), the traveling trolley (2) is movably connected with the drilling rig (1), a push-pull motor (5) is arranged on the traveling trolley (2), the push-pull handle (6) controls the traveling trolley (2) to move, and the push-pull pump (9) is positioned on the traveling trolley (2); the method is characterized in that: the device also comprises a controller (10), a display (11) and a position encoder (12); the controller (10) is respectively and electrically connected with the push-pull handle (6), the push-pull valve (7), the display (11) and the position encoder (12); the position encoder (12) is located on the walking trolley (2), the position encoder (12) comprises an encoder (121), a pin shaft (124) and a nylon gear (125), and the nylon gear (125) corresponds to the rack (3).

2. The traveling trolley position monitoring and automatic deceleration system for the trenchless drilling rig as claimed in claim 1, wherein: the pin shaft (124) is coaxially connected with the detection end of the encoder (121), the nylon gear (125) is coaxially connected with the pin shaft (124) through a key (126), and the nylon gear (125) is made of nylon.

3. The system of claim 2, wherein the system comprises: the position encoder (12) is vertically arranged on the walking trolley (2), the nylon gear (125) is located at the bottom end of the walking trolley (2), and gear teeth of the nylon gear (125) are meshed with teeth of the rack (3).

4. The system of claim 3, wherein the system comprises: the position encoder (12) further comprises a fixed seat (122) and a bottom plate (123), the encoder (121) is detachably connected with the fixed seat (122), the fixed seat (122) is detachably connected with the bottom plate (123), and the bottom plate (123) is located on the walking trolley (2).

5. The system of claim 4, wherein the system comprises: the fixed seat (122) is sleeved on the periphery of the detection end of the encoder (121), and the pin shaft (124) is movably connected with the central hole of the bottom plate (123) through a shaft sleeve.

6. The traveling trolley position monitoring and automatic deceleration system for the trenchless drilling rig as claimed in claim 5, wherein: the display (11) is arranged at a position close to the push-pull handle (6); the push-pull valve (7) is a proportional valve; the encoder (121) is specifically a multi-turn absolute value encoder.

7. The system of claim 6, wherein the system comprises: a feeding coil (71) and a back dragging coil (72) are respectively arranged at two ends of the push-pull valve (7), and the feeding coil (71) and the back dragging coil (72) are both electrically connected with the controller (10); the push-pull pump (9) is respectively connected with the push-pull motor (5) and the push-pull valve (7) through oil passages.