Semi-automatic small-caliber tapping machine

Abstract

The utility model discloses a semi-automatic small-caliber tapping machine, which relates to the field of pipeline tapping and plugging without conveying interruption, and comprises a stable support, a driving assembly, a feed screw and a main shaft assembly, and the driving assembly comprises a hydraulic driver, a speed reducer and a transmission case. Hydraulic driving is adopted, torque is increased through the speed reducer, the torque is transmitted to the main shaft assembly through the transmission gear in the transmission box body, the feeding lead screw is controlled on the outer side of the equipment upper plate through an operator, so that the main shaft assembly is fed to conduct tapping operation on a pipeline, and therefore pipeline tapping construction under pressure is achieved; the utility model has the advantages of simple structure, lightweight design and convenience in operation, has the specific characteristic of stable main body structure, reduces the construction risk, and is favorable for reducing the tapping operation time.

Description

Technical Field

[0001] The utility model relates to the field of non-stop pipeline hole opening and plugging, in particular to a semi-automatic small-caliber hole opening machine. Background Art

[0002] The pipeline non-stop pressure plugging technology is a special technology for the maintenance and emergency repair of in-service pipelines. The hydraulic hole-opening machine, as an important equipment of the non-stop pressure plugging technology, plays a vital role in the overall construction. The quality of the hole-opening directly affects the subsequent construction process.

[0003] The existing technology lacks a semi-automatic small-diameter hole-drilling machine that can meet the use requirements while complying with a lightweight design and can be installed and used by 1-2 people manually at the construction site.

[0004] The existing non-stop hole opening and plugging technology uses a manual hole opening machine when opening balance holes and bypass holes in small-diameter pipelines. The manual hole opening machine is an all-steel structure with a large weight, and the feeding and cutting must be manually operated by on-site operators. Utility Model Content

[0005] In view of the problems existing in the above-mentioned prior art, the purpose of the present invention is to provide a semi-automatic small-diameter hole-drilling machine, which reduces the operating burden of construction workers through lightweight design, while having a stable structure and equipment rigidity.

[0006] In order to achieve the above-mentioned purpose of the utility model, the utility model adopts the following technical solutions:

[0007] The utility model provides a semi-automatic small-caliber drilling machine, comprising a stabilizing bracket, a driving assembly, a feed screw and a spindle assembly, wherein:

[0008] The stabilizing bracket includes an equilateral triangle bracket structure formed by a front body, an optical axis group, and an upper plate fixedly connected. The optical axis group includes three optical axes arranged parallel to the feed screw, and the three optical axes are arranged in a herringbone shape around the feed screw. The front body and the upper plate are respectively connected to the two ends of the optical axis group.

[0009] The spindle assembly includes a nut rod, a barrel cutter and a center drill, the nut rod has a barrel cavity with an internal thread, and the nut rod is assembled to the end of the feed screw through the barrel cavity thread;

[0010] The front end of the feed screw is assembled on the side of the upper plate away from the front body through a thrust ball bearing and extends out of the upper plate. The thrust ball bearing is assembled through a bearing cover so that the feed screw and the upper plate rotate in conjunction;

[0011] The drive assembly includes a transmission box, a reducer and a hydraulic driver. The transmission box includes a transmission gear and a transmission box body. The transmission gear is fixedly mounted on the nut rod and is linked to the nut rod. The nut rod is rotatably matched with the transmission box body through a radial bearing. The reducer and the hydraulic driver are used to drive the transmission gear and provide drilling torque.

[0012] Furthermore, one end of the optical axis is locked and connected to the upper plate through a fastening nut, and the other end of the optical axis is threadedly fastened to the front body.

[0013] Furthermore, the cylinder knife is assembled on the end of the nut rod through a knife receiving disc, and the cylinder knife is coaxially fixed with the knife receiving disc. The center drill is assembled at the center of the knife receiving disc and extends out of the blade of the cylinder knife.

[0014] Furthermore, the hydraulic driver is a hydraulic motor, the output shaft of the hydraulic motor is linked to a reducer, and the output shaft of the reducer drives the transmission gear.

[0015] Furthermore, a rotary sealing assembly is provided between the front body and the nut rod, and the rotary sealing assembly includes a dust ring and a sealing rubber ring.

[0016] Furthermore, the radial bearing is a tapered roller bearing, and one is provided on each side of the transmission gear.

[0017] Furthermore, the front end of the nut rod is arranged in the transmission box body, the nut rod is provided with an end cover at the position where it passes through the transmission box body, and the feed screw is provided with a transmission cover at the position where it passes through the transmission box body.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] The utility model adopts hydraulic drive, increases the torque through the reducer, and transmits the torque to the main shaft (nut rod) through the transmission gear inside the transmission box. The operator controls the feed screw on the outside of the upper plate of the equipment to feed the main shaft assembly. The center drill and the cylinder cutter fixed at the end of the main shaft (nut rod) perform the hole opening operation on the pipeline, thereby achieving the pressure opening construction of the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional diagram of a semi-automatic small-diameter hole-drilling machine in the present utility model.

[0021] Figure 2 The utility model is a side view of a semi-automatic small-diameter hole-opening machine.

[0022] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure of a medium-sized semi-automatic small-diameter hole-punching machine.

[0023] in:

[0024] 100, feed screw, 200, drive assembly, 300, stabilizing bracket, 400, spindle assembly;

[0025] 110, thrust ball bearing, 120, bearing cover;

[0026] 210, transmission box, 211, transmission gear, 212, transmission box body, 213, radial bearing, 214, end cover, 215, transmission cover, 220, speed reducer, 230, hydraulic drive;

[0027] 310, front body, 311, dust ring, 312, sealing rubber ring, 320, optical axis assembly, 321, optical axis, 322, fastening bolts, 330, upper plate;

[0028] 410, nut rod, 411, cylinder cavity, 420, cylinder knife, 430, center drill, 440, cutter head. DETAILED DESCRIPTION

[0029] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, the following detailed description of specific embodiments of the present invention is provided in conjunction with the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0030] Example 1

[0031] like Figure 1 and Figure 2 A semi-automatic small-diameter drilling machine shown includes a stabilizing bracket 300, a driving assembly 200, a feed screw 100, and a spindle assembly 400, wherein:

[0032] The stabilizing bracket 300 includes an equilateral triangle bracket structure formed by a front body 310, an optical axis group 320, and an upper plate 330 fixedly connected. The optical axis group 320 includes three optical axes 321 arranged parallel to the feed screw 100, and the three optical axes 321 are arranged in a herringbone shape around the feed screw 100. The front body 31 and the upper plate 330 are respectively connected to the two ends of the optical axis group 320.

[0033] The spindle assembly 400 includes a screw nut 410, a barrel cutter 420, and a center drill 430. The screw nut 410 has a barrel cavity 411 with an internal thread, and the screw nut 410 is threadedly assembled to the end of the feed screw 100 through the barrel cavity 411.

[0034] The front end of the feed screw 100 is assembled on the side of the upper plate 330 away from the front body 310 through a thrust ball bearing 110 and extends out of the upper plate 330. The thrust ball bearing 110 is assembled through a bearing cover 120 so that the feed screw 100 and the upper plate 330 can rotate together.

[0035] The drive assembly 200 includes a transmission box 210, a reducer 220 and a hydraulic driver 230. The transmission box 210 includes a transmission gear 211 and a transmission box body 212. The transmission gear 211 is fixedly mounted on the nut rod 410 and is linked to the nut rod 410. The nut rod 410 rotates with the transmission box body 212 through a radial bearing 213. The reducer 220 and the hydraulic driver 230 are used to drive the transmission gear 211 and provide drilling torque.

[0036] The semi-automatic small-diameter hole tapping machine of the present invention uses a drive assembly 200 to provide the hole-drilling cutting force, while the spindle feed is only required to be rotated by the operator through the feed screw 100. For example, a wrench is provided at the front end of the feed screw 100 to facilitate the rotation and advancement of the nut rod 410. The operator only needs to hold the wrench to fix the feed screw 100 so that it does not rotate, and then control the hydraulic driver 230 to move the nut rod 410 forward or backward along the feed screw 100. Therefore, this hole tapping machine only requires one or two people to operate and is lightweight.

[0037] It should be noted that the feed screw 100 has an appropriate fine pitch, so that the nut rod 410, driven by the reducer 220 and the transmission gear 211 (large gear), can drill holes along the pipeline in a low speed and high torque manner, and the pitch, transmission ratio and other parameters are reasonably set to make the feed speed of the nut rod 410 along the feed screw 100 appropriate.

[0038] In this embodiment, one end of the optical axis 321 is locked to the upper plate 330 via a fastening nut 322, and the other end of the optical axis 321 is threadedly fastened to the front body 310. The optical axis 321, the front body 310, and the upper plate 330 together form an equilateral triangle frame structure, providing a relatively stable main structure and meeting the torsion resistance requirements when drilling holes.

[0039] In this embodiment, the cylinder knife 420 is assembled at the end of the nut rod 410 through the knife receiving disc 440, and the cylinder knife 420 is coaxially fixed with the knife receiving disc 440. The center drill 430 is assembled at the center of the knife receiving disc 440 and extends out of the blade of the cylinder knife 420.

[0040] In this embodiment, the hydraulic driver 230 is a hydraulic motor, the output shaft of which is linked to the reducer 220, and the output shaft of the reducer 220 drives the transmission gear 211. The use of a hydraulic motor can provide the high drilling torque required for drilling along the pipeline. The torque is amplified by the reducer and transmitted to the main shaft assembly 400 via the transmission gear 211 inside the transmission box 210.

[0041] It is worth noting that a rotary sealing assembly is provided between the front body 310 and the nut rod 410, and the rotary sealing assembly includes a dust ring 311 and a sealing rubber ring 312. More specifically, the rotary sealing component is used to maintain a rotational matching relationship and an axial relative movement relationship between the nut rod 410 and the front body 310 while maintaining appropriate sealing performance, so the rotary sealing assembly also includes a skeleton oil seal, bearings and other rotary sealing parts.

[0042] It should be noted that the radial bearing 213 is a tapered roller bearing, and is respectively provided on both sides of the transmission gear 211 , thereby providing sufficient radial supporting force to the nut 410 .

[0043] In this embodiment, the front end of the nut rod 410 is arranged in the transmission box 212, the nut rod 410 is provided with an end cover 214 at the point where it passes through the transmission box 212, and the feed screw 100 is provided with a transmission cover 215 at the point where it passes through the transmission box 212.

[0044] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0045] The above-described embodiments merely represent several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. A semi-automatic small-diameter hole-drilling machine, characterized in that: It includes a stabilizing bracket, a driving assembly, a feed screw and a spindle assembly, wherein: The stabilizing bracket includes an equilateral triangle bracket structure formed by a front body, an optical axis group, and an upper plate fixedly connected. The optical axis group includes three optical axes arranged parallel to the feed screw, and the three optical axes are arranged in a herringbone shape around the feed screw. The front body and the upper plate are respectively connected to the two ends of the optical axis group. The spindle assembly includes a nut rod, a barrel cutter and a center drill, the nut rod has a barrel cavity with an internal thread, and the nut rod is assembled to the end of the feed screw through the barrel cavity thread; The front end of the feed screw is assembled on the side of the upper plate away from the front body through a thrust ball bearing and extends out of the upper plate. The thrust ball bearing is assembled through a bearing cover so that the feed screw and the upper plate rotate in conjunction; The drive assembly includes a transmission box, a reducer and a hydraulic driver. The transmission box includes a transmission gear and a transmission box body. The transmission gear is fixedly mounted on the nut rod and is linked to the nut rod. The nut rod is rotatably matched with the transmission box body through a radial bearing. The reducer and the hydraulic driver are used to drive the transmission gear and provide drilling torque.

2. The semi-automatic small-diameter hole-drilling machine according to claim 1, characterized in that: One end of the optical axis is locked and connected to the upper plate through a fastening nut, and the other end of the optical axis is threadedly fastened to the front body.

3. The semi-automatic small-diameter hole-drilling machine according to claim 1, characterized in that: The cylindrical knife is assembled on the end of the nut rod through a knife receiving disc, and the cylindrical knife is fixed coaxially with the knife receiving disc. The center drill is assembled at the center of the knife receiving disc and extends out of the blade of the cylindrical knife.

4. The semi-automatic small-diameter hole-drilling machine according to claim 1, characterized in that: The hydraulic driver is a hydraulic motor, the output shaft of the hydraulic motor is linked to a reducer, and the output shaft of the reducer drives the transmission gear.

5. The semi-automatic small-diameter hole-drilling machine according to claim 1, characterized in that: A rotary sealing assembly is provided between the front body and the nut rod, and the rotary sealing assembly comprises a dust ring and a sealing rubber ring.

6. The semi-automatic small-diameter hole-drilling machine according to claim 1, characterized in that: The radial bearings are tapered roller bearings, and are respectively provided on both sides of the transmission gear.

7. The semi-automatic small-diameter hole-drilling machine according to claim 1, characterized in that: The front end of the nut rod is arranged in the transmission box body, the nut rod is provided with an end cover at the position where it passes through the transmission box body, and the feed screw is provided with a transmission cover at the position where it passes through the transmission box body.

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