A blind hole tool bar in a synchronous belt

Abstract

The present invention belongs to the technical field of oilfield perforating equipment production and processing equipment, and specifically relates to a blind hole cutter bar in a synchronous belt, wherein the cutter tail is connected and fixed with a mountain plate through a back cap, and a plurality of cutter bar joints are sequentially installed at the lower end of the cutter tail, and the cutter bar joint at the beginning and the cutter tail and two adjacent cutter bar joints are respectively connected through a second wheel shaft; a first synchronous belt pulley is inlaid on the second wheel shaft, and the second wheel shafts are connected to each other through the first synchronous belt to transmit power; power is transmitted between the motor and the cutter tail through the second synchronous belt and the second synchronous belt pulley; wherein the cutter bar joint at the end is connected and fixed with the cutter head through bolts, and a hydraulic cavity is provided at the front end of the cutter head, and the hydraulic cavity is connected with a hydraulic pump through a hydraulic copper pipe, and a hydraulic telescopic support arm is installed inside the hydraulic cavity through a spring; a small cutter block is connected to the lower end of the first wheel shaft of the cutter head. The torque transmission is stable and reliable, the noise is small, the maintenance is simple and convenient, and the cutter head is durable.

Description

Technical Field

[0001] The invention belongs to the technical field of oilfield perforating equipment production and processing equipment, and in particular relates to a blind hole cutter bar in a synchronous belt. Background Art

[0002] Perforating equipment is a special equipment in oilfield development and production. The penetration index of the perforator is an important indicator of the performance of the Peugeot perforator. The inner blind hole perforating gun extends the blind hole of the gun body from the inside to the outside, which increases the loading height of the perforating bullet, is conducive to the full stretching and extension of the jet, and can effectively improve the penetration depth of the perforator. However, the blind hole of the inner blind hole perforating gun is processed from the inside to the outside, which requires a slender tool rod to penetrate into the gun body, and transmit the power to the front end of the tool rod through the transmission system on the tool rod, driving the small tool head to rotate, and cutting the inner blind hole. The commonly used inner blind hole tool rod transmission system is gear transmission, that is, the tail end of the tool rod is the driving motor, and the other end is the tool head. The power transmission between the tool tail and the tool head adopts multiple gears in parallel. The tool rod of this structure has poor impact resistance and large vibration due to the use of gear transmission. The gear is very easy to be damaged during cutting. Once a gear is damaged, it will cause damage to multiple related gears, with high maintenance costs and low work efficiency. Therefore, it is urgent to design an internal blind hole tool bar with stable transmission, low failure rate and easy maintenance. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides a blind hole cutter bar in a synchronous belt, which is used for processing blind holes in a perforating gun. It has stable and reliable torque transmission, low noise, simple structure, smooth power transmission, simple and convenient maintenance, and is durable.

[0004] The technical solution adopted by the present invention is: a blind hole tool bar in a synchronous belt, the tool bar comprises a first axle, a tool head, a small tool block, a first wedge block, a second wedge block, a tool bar joint, a second axle, a first synchronous pulley, a first synchronous belt, a tool tail, a back cap, a mountain plate, a second synchronous belt, a second synchronous pulley, a motor, a hydraulic telescopic support arm, a spring, a hydraulic copper tube and a hydraulic chamber; the tool tail is connected and fixed with the mountain plate through a back cap, and a plurality of tool bar joints are sequentially installed at the lower end of the tool tail, and the tool bar joint at the beginning and the tool tail and two adjacent tool bar joints are respectively connected through the second axle; the first synchronous pulley is inlaid on the second axle, and the second axles are connected to each other through the first synchronous belt to transmit power; the motor and the tool tail are transmitted through the second synchronous belt and the second synchronous pulley; wherein the tool bar joint at the end is connected and fixed with the tool head through bolts, and a hydraulic chamber is provided at the front end of the tool head, and the hydraulic chamber is communicated with the hydraulic pump through a hydraulic copper tube, and the hydraulic telescopic support arm is installed inside the hydraulic chamber through a spring; the small tool block is connected to the lower end of the first axle of the tool head.

[0005] Furthermore, the installation tightness of the first synchronous belt is adjusted by the first wedge block and the second wedge block.

[0006] Furthermore, the first wedge block is mounted on the cutter head by bolts.

[0007] Furthermore, the second wedge block is mounted on the cutter head by bolts.

[0008] Furthermore, the installation tightness of the second synchronous belt is adjusted by a back cap.

[0009] Furthermore, the number of the hydraulic telescopic support arms is 3.

[0010] Furthermore, the power transmission of the entire tool bar is transmitted by a synchronous belt. When drilling, the synchronous belt buffers the impact and vibration caused by the cutting process of the small knife block, making the transmission torque more stable and the vibration and noise of the tool bar smaller. Since the synchronous belt buffers the impact force, it protects other parts of the tool bar from impact, greatly reducing the failure rate of the tool bar and making the tool bar more durable. In addition, the tool bar body is assembled by connecting multiple tool bar joints and the cutter head and tail. Each tool bar joint is a unit. When maintenance is required, it can be disassembled separately, which is simple and convenient. In addition, the entire tool bar design has only the synchronous belt as a wearing part, and regular maintenance is sufficient.

[0011] The beneficial effects of the present invention are as follows: a synchronous belt inner blind hole cutter bar is provided, which is used for processing blind holes in perforating guns, has stable and reliable torque transmission, low noise, simple structure, stable power transmission, simple and convenient maintenance, and is durable. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural diagram of embodiment 1.

[0013] Figure 2 yes Figure 1 Sectional view of AA.

[0014] Figure 3 yes Figure 1 A partial enlarged view of B.

[0015] Figure 4 yes Figure 1 A partial enlarged view of C in the middle.

[0016] Figure 5 yes Figure 1 A partial enlarged view of D in the middle. DETAILED DESCRIPTION Example

[0017] Referring to the figures, a blind hole tool bar in a synchronous belt, the tool bar includes a first wheel shaft 1, a tool head 2, a small knife block 3, a first wedge block 4, a second wedge block 5, a tool bar joint 10, a second wheel shaft 11, a first synchronous pulley 12, a first synchronous belt 13, a knife tail 14, a back cap 15, a mountain plate 16, a second synchronous belt 17, a second synchronous pulley 18, a motor 19, a hydraulic telescopic support arm 20, a spring 21, a hydraulic copper tube 22 and a hydraulic chamber 23; the knife tail 14 is connected and fixed to the mountain plate 16 through the back cap 15, and a plurality of tool bar joints 10 are sequentially installed at the lower end of the knife tail 14, and the tool bar joint 10 at the starting end and the knife tail 14 and the two adjacent tool bar joints 10 are respectively connected through the second wheel shaft 11; the first synchronous pulley 12 is inlaid on the second wheel shaft 11, and the second wheel shaft 11 is mutually connected The power is transmitted between the motor 19 and the cutter tail 14 through the second synchronous belt 17 and the second synchronous pulley 18; the end of the cutter rod joint 10 is connected and fixed to the cutter head 2 by bolts, and the front end of the cutter head 2 is provided with a hydraulic chamber 23, and the hydraulic chamber 23 is connected with the hydraulic pump through a hydraulic copper tube 22, and the hydraulic telescopic support arm 20 is installed inside the hydraulic chamber 23 through a spring 21; the lower end of the first wheel axle 1 of the cutter head 2 is connected with a small knife block 3; the installation tightness of the first synchronous belt 13 is adjusted by the first wedge block 4 and the second wedge block 5; the first wedge block 4 and the second wedge block 5 are installed on the cutter head 2 by bolts; the installation tightness of the second synchronous belt 17 is adjusted by the back cap 15; the number of the hydraulic telescopic support arms 20 is 3.

[0018] When the motor starts to rotate, the power is transmitted step by step through the synchronous belt, driving the wheel shaft on the cutter head to rotate, and the wheel shaft drives the small knife block to rotate, so as to realize rotary cutting. When starting cutting, first, the hydraulic pump injects liquid into the hydraulic cavity at the front end of the cutter head, and the three telescopic arms extend outward and support on the inner wall of the perforating gun to fix the cutter rod, and then the small knife block contacts the inner wall and starts rotary cutting. After the cutting is completed, the three telescopic arms will return to their original positions under the action of the spring 21, and one cutting is completed.

[0019] The power transmission between the motor and the cutter tail and the cutter bar joint and the cutter head is transmitted by a flexible synchronous belt. During drilling, the synchronous belt can buffer the impact and vibration caused by the cutting process of the small cutter block, making the transmission torque more stable, the vibration and noise of the cutter bar smaller, and making the cutter bar more durable. In addition, three hydraulic telescopic support arms from the inside to the outside are designed at the front end of the cutter head. When the cutting is started, the three arms extend outward and support the inner wall of the perforating gun, which can effectively fix the cutter bar and prevent the cutter bar from swinging when the small cutter block is cutting. Therefore, the cutting vibration will be smaller, the impact on the cutter bar will also be reduced, and the cutting will be smoother. Finally, since the cutter bar body is assembled by connecting multiple cutter bar joints, cutter heads and cutter tails, each cutter bar joint, cutter head or cutter tail is a unit. When maintenance is required, they can be disassembled separately. The maintenance operation is simple and convenient, saving time and effort.

Claims

1. A blind hole tool bar in a synchronous belt, characterized by: The knife bar comprises a first wheel shaft (1), a knife head (2), a small knife block (3), a first wedge block (4), a second wedge block (5), a knife bar joint (10), a second wheel shaft (11), a first synchronous pulley (12), a first synchronous belt (13), a knife tail (14), a back cap (15), a mountain plate (16), a second synchronous belt (17), a second synchronous pulley (18), a motor (19), a hydraulic telescopic support arm (20), a spring (21), a hydraulic copper tube (22) and a hydraulic chamber (23); the knife tail (14) and the mountain plate (16) are connected and fixed via the back cap (15); a plurality of knife bar joints (10) are sequentially mounted at the lower end of the knife tail (14); the knife bar joint (10) at the beginning and the knife tail (14) and two adjacent knife bar joints (10) are respectively connected via the second wheel shaft (11); the first synchronous pulley (11) is inlaid on the second wheel shaft (11); 2), the second axles (11) are connected to each other through a first synchronous belt (13) to transmit power; the motor (19) and the knife tail (14) transmit power through a second synchronous belt (17) and a second synchronous pulley (18); wherein the end of the knife rod joint (10) is connected and fixed to the knife head (2) through a bolt, the front end of the knife head (2) is provided with a hydraulic cavity (23), the hydraulic cavity (23) is connected to the hydraulic pump through a hydraulic copper pipe (22), and the hydraulic telescopic support arm (20) is installed in the hydraulic cavity (23) through a spring (21); the lower end of the first axle (1) of the knife head (2) is connected to a small knife block (3); the installation tightness of the first synchronous belt (13) is adjusted by a first wedge block (4) and a second wedge block (5); the installation tightness of the second synchronous belt (17) is adjusted by a back cap (15); the number of the hydraulic telescopic support arms (20) is 3.

2. The blind hole tool bar in a synchronous belt according to claim 1, characterized in that: The first wedge block (4) is mounted on the cutter head (2) by means of bolts.

3. The blind hole tool bar in a synchronous belt according to claim 1, characterized in that: The second wedge block (5) is mounted on the cutter head (2) by means of bolts.

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