Drill pipe handling device

Abstract

The present invention discloses a drill rod handling device that solves the problem of a drill rod handling device becoming stuck during operation. The drill rod handling device includes a rotary arm, a lifting mechanism, and a clamping mechanism. The lifting mechanism is disposed on the rotary arm and deflects circumferentially with the rotary arm. The clamping mechanism is disposed on the lifting mechanism and rises or falls with the lifting mechanism. The clamping mechanism is used to clamp the drill rod.

Description

Technical Field

[0001] The present invention belongs to the field of pile drivers, and in particular relates to a drill rod transporting device applied to a pile driver. Background Art

[0002] Some existing pile drivers include a pile driver platform, a column, a pile clamp, a driving device, a pile storage frame and a drill rod handling device. Among them, the pile storage frame is located on one side of the pile driver platform, the column and the driving device are respectively arranged on the pile driver platform, and the pile clamp and the drill rod handling device are respectively arranged on the column.

[0003] The existing pile driver sinks multiple drill rods in the following steps: 1. The drill rod transporting device transports a drill rod on the pile storage frame to the top of the driving device; 2. The pile clamp clamps the upper end of the drill rod, and the driving device clamps the lower end of the drill rod; 3. The driving device drives the drill rod downward, and during the downward movement of the drill rod, the pile clamp moves downward with the drill rod until the drill rod sinks to a predetermined position; 4. It is determined whether the drill rods need to be docked. If so, the process proceeds to step 5. If docking is not required, the pile driver stops working; 5. The pile clamp moves upward until the distance between it and the driving device is greater than the height of the drill rod; 6. Step 1 is repeated.

[0004] The drill rod handling device includes a lifting mechanism and a clamping mechanism. The clamping mechanism is fixedly connected to the oil cylinder of the lifting mechanism. The oil cylinder of the lifting mechanism is axially movably connected to the rotating shaft. The push rod of the lifting mechanism is fixedly connected to the rotating shaft. The clamping mechanism is used to clamp the drill rod. The rotating shaft deflects the drill rod to the top of the driving device. The push rod of the lifting mechanism drives the drill rod downward through the oil cylinder of the lifting mechanism.

[0005] After the drill rod handling device carries one drill rod to the top of another drill rod, the drill rod handling device realizes the splicing process of the upper and lower adjacent drill rods through the lifting mechanism. However, the existing lifting mechanism is fixedly connected to the rotating shaft of the drill rod handling device. When the upper and lower adjacent drill rods are misaligned and collided during the docking process, the lower drill rod will transmit a radial impact force to the upper drill rod, and the upper drill rod will transmit the radial impact force to the rotating shaft through the oil cylinder of the lifting mechanism. Since the push rod of the lifting mechanism is fixedly connected to the rotating shaft, the rotating shaft will be slightly bent in the axial direction after being subjected to multiple radial impact forces of the oil cylinder of the lifting mechanism. The rotating shaft with slight axial bending will cause the oil cylinder of the lifting mechanism to be stuck on the rotating shaft with a certain probability during operation, that is, the drill rod handling device is "stuck" and cannot work normally. Summary of the Invention

[0006] In view of this, an object of the present invention is to provide a drill rod handling device to solve the problem of the drill rod handling device getting stuck during operation.

[0007] In order to solve the above technical problems, the present invention provides a drill rod handling device including a rotary arm, a lifting mechanism and a clamping mechanism. The length of the rotary arm is greater than the height of the rotary arm. The lifting mechanism is arranged on the rotary arm and deflects circumferentially with the rotary arm. The clamping mechanism is arranged on the lifting mechanism and rises or falls with the lifting mechanism. The clamping mechanism is used to clamp the drill rod.

[0008] Furthermore, the rotary arm includes a fixed seat, a deflection bracket and a drive motor. The drive motor is arranged on the fixed seat. A driving wheel is provided on the output shaft of the drive motor. An arc-shaped rack is provided on the deflection bracket. The driving wheel is engaged with the arc-shaped rack. The lifting mechanism is arranged on the deflection bracket.

[0009] Furthermore, the rotary arm further includes a plurality of rollers, which are arranged between the deflection bracket and the fixing seat.

[0010] Furthermore, the deflection bracket is provided with at least one detachable blocking cover, and the roller is clamped between the blocking cover and the deflection bracket.

[0011] Furthermore, the blocking cover is provided with a fixing hole and a boss, and the boss is provided with an arc-shaped groove or an arc-shaped hole.

[0012] Furthermore, the lifting mechanism includes a lifting cylinder, which is arranged on the rotary arm, and the clamping mechanism is arranged below the lifting cylinder and connected to the push rod of the lifting cylinder; or, the lifting mechanism includes a lifting cylinder, which is arranged on the rotary arm, and the clamping mechanism is arranged below the lifting cylinder and connected to the push rod of the lifting cylinder.

[0013] Furthermore, the clamping mechanism includes a clamping cylinder, a push plate and a clamping block, and the clamping cylinder pushes the clamping block to move laterally through the push plate; or, the clamping mechanism includes a clamping cylinder, a push plate and a clamping block, and the clamping cylinder pushes the clamping block to move laterally through the push plate.

[0014] Furthermore, the clamping mechanism also includes a shell, the clamping cylinder, the push plate and the clamping block are arranged in the shell, the push plate is provided with an inclined guide surface, and the clamping block is provided with an inclined mating surface, and the guide surface pushes the clamping block to move laterally inward through the mating surface.

[0015] Furthermore, the clamping mechanism also includes a mounting seat, which is arranged in the shell, and an elastic member is provided between the clamping block and the mounting seat, and the elastic member pushes the clamping block to move laterally outward.

[0016] Furthermore, the mounting seat is rotatably connected to the housing;

[0017] It also includes screws, and the mounting seat includes an upper mounting seat and a lower mounting seat. The upper mounting seat is provided with an upper mounting hole, and the lower mounting seat is provided with a lower mounting hole. The screw passes through the upper mounting hole and is fixedly connected to the lower mounting hole.

[0018] Compared to the prior art, the drill rod handling device of the present invention includes a rotary arm and a lifting mechanism. The lifting mechanism is mounted on the rotary arm and rotates circumferentially with the rotary arm. When the lifting mechanism rotates circumferentially with the rotary arm, the rotary arm can become the component that rotationally connects the drill rod handling device to the column. The advantage of using the rotary arm as the component that rotationally connects the drill rod handling device to the column is that when the lifting mechanism is rotationally connected to the column, the lifting mechanism's oil cylinder (or air cylinder) and the lifting mechanism's push rod are each rotationally connected to the column; whereas when the rotary arm is rotationally connected to the column, the rotary arm only needs to be rotationally connected to the column. This design reduces the probability of the drill rod handling device getting stuck during operation by reducing the number of connections to the column. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A perspective view of a drill rod handling device according to the present invention;

[0020] Figure 2 A top view of the drill rod handling device of the present invention;

[0021] Figure 3 for Figure 2 Cross-sectional view at AA in the middle;

[0022] Figure 4 A perspective view of the deflection bracket of the present invention;

[0023] Figure 5 is a three-dimensional diagram of the first bracket of the present invention;

[0024] Figure 6 is a three-dimensional diagram of the second bracket of the present invention;

[0025] Figure 7 This is a first stereoscopic view of the sealing cover of the present invention;

[0026] Figure 8 A second perspective view of the sealing cover of the present invention;

[0027] Figure 9 is a three-dimensional diagram of the first fixing seat of the present invention;

[0028] Figure 10 is a three-dimensional diagram of the second fixing base of the present invention;

[0029] Figure 11 for Figure 2 Cross-sectional view at the middle BB;

[0030] Figure 12A perspective view of the upper mounting base of the present invention;

[0031] Figure 13 A perspective view of the lower mounting base of the present invention;

[0032] Figure 14 It is a three-dimensional diagram of the clamping block of the present invention. DETAILED DESCRIPTION

[0033] In order to facilitate understanding of the technical solution of the present invention, a detailed description is given below with reference to the accompanying drawings and specific embodiments.

[0034] See also Figure 1 The drill rod handling device includes a rotary arm 1, a lifting mechanism 2 and a clamping mechanism 3. The length of the rotary arm 1 is greater than the height of the rotary arm 1. The lifting mechanism 2 is arranged on the rotary arm 1 and deflects circumferentially with the rotary arm 1. The clamping mechanism 3 is arranged on the lifting mechanism 2 and rises or falls with the lifting mechanism 2. The clamping mechanism 3 is used to clamp the drill rod. The reciprocating deflection path of the rotary arm 1 covers the drill rod storage position and the pile driver drilling position.

[0035] See also Figure 1 and Figure 2 The jib 1 includes a fixed base 11, a deflection bracket 12, and a drive motor 13. The fixed base 11, which has a rotating structure, is mounted and fixed to the pile driver body. The drive motor 13 is located on the deflection bracket 12. A driving wheel 131 is provided on the output shaft of the reversible drive motor 13. The fixed base 11 is provided with an arc-shaped rack 1111 coaxial with the rotating structure on the fixed base 11. The driving wheel 131 engages with the arc-shaped rack 1111. The lifting mechanism 2 is located on the deflection bracket 12 and is separated from the fixed base 11. During operation, the drive motor 13 drives the driving wheel 131 to rotate circumferentially via the output shaft. The driving wheel 131 drives the drive motor 13 to move circumferentially around the arc-shaped rack 1111, thereby achieving circumferential movement of the deflection bracket 12 along the fixed base 11 along with the drive motor 13.

[0036] See also Figure 2 and Figure 3 The rotary arm 1 further includes a plurality of rollers 14 , which are disposed between the deflection bracket 12 and the fixed seat 11 . The rollers 14 can be used to weaken the resistance encountered by the deflection bracket 12 during its circumferential motion relative to the fixed seat 11 .

[0037] See also Figure 1 、 Figure 9 and Figure 10The fixed seat 11 includes a first fixed seat 111 and a second fixed seat 112 in the shape of a semicircular ring, wherein the arc-shaped rack 1111 is arranged on the first fixed seat 111. Of course, the arc-shaped rack 1111 can also be arranged at the junction of the first fixed seat 111 and the second fixed seat 112. The first fixed seat 111 is provided with a first annular groove 1112, and the first annular groove 1112 is provided with a first roller groove 1113. The roller 14 can be embedded in the first roller groove 1113 and roll along the first roller groove 1113. The second fixed seat 112 is provided with a second annular groove 1122, and the second annular groove 1122 is provided with a second roller groove 1123. The roller 14 can be embedded in the second roller groove 1123 and roll along the second roller groove 1123. After the screw passes through the first through hole 1125 on the second fixing seat 112, it is fixedly connected to the first threaded hole 1115 on the first fixing seat 111. When the screw passes through the first through hole 1125 on the second fixing seat 112 and is fixedly connected to the first threaded hole 1115 on the first fixing seat 111, the first annular groove 1112 and the second annular groove 1122 are spliced into a circumferentially continuous and complete annular groove, and one end of the deflection bracket 12 can be inserted into the annular groove and rotate relative to the annular groove; in addition, when the screw passes through the first through hole 1125 on the second fixing seat 112 and is fixedly connected to the first threaded hole 1115 on the first fixing seat 111, the first roller groove 1113 and the second roller groove 1123 are spliced into a circumferentially continuous and complete roller groove, and the roller 14 enters the roller groove and can rotate relative to the roller groove.

[0038] Preferably, a first left protrusion 1114 is provided on the first fixing seat 111, and a first right groove 1124 is provided on the second fixing seat 112. When the first left protrusion 1114 is inserted into the first groove 1124, the screw passes through the first through hole 1125 on the second fixing seat 112 and is fixedly connected to the first threaded hole 1115 on the first fixing seat 111.

[0039] See also Figure 4 、 Figure 5 and Figure 6The deflection bracket 12 includes a first bracket 121 and a second bracket 122. The first bracket 121 is provided with a motor mounting bracket 1213 and a second threaded hole 1217 on a semi-circular structure. The motor mounting bracket 1213 is provided with a motor hole 1214, the axis of which is parallel to the central axis of the semi-circular structure of the first bracket 121. The drive motor 13 is fixedly connected to the motor mounting bracket 1213 by screws. After the output shaft of the drive motor 13 passes through the motor hole 1214, the outer driving pulley 131 is attached. The driving pulley 131 rotates or stops synchronously with the output shaft of the drive motor 13. The second bracket 122, which has a semi-circular structure, is provided with a second through-hole 1225 on the circumferential end surface. After the screw passes through the second through-hole 1225 on the second bracket 122, it is fixedly connected to the second threaded hole 1217 on the circumferential end surface of the semi-circular structure of the first bracket 121. Of course, in the deflection bracket 12 provided by the present invention, the through-hole can also be provided on the first bracket 121, and the corresponding threaded hole can be provided on the second bracket 122.

[0040] Preferably, the first bracket 121 is provided with a second left groove 1216 on the circumferential end of the semi-annular structure, and the second bracket 122 is provided with a second right protrusion 1226 on the circumferential end. When the second right protrusion 1226 is inserted into the second left groove 1216, the screw passes through the second through hole 1225 on the second bracket 122 and is fixedly connected to the second threaded hole 1217 on the first bracket 121.

[0041] The installation steps of the swing arm 1 include: 1. After the screw passes through the first through hole 1125 on the second fixing seat 112, it is fixedly connected to the first threaded hole 1115 on the first fixing seat 111; 2. The roller 14 is inserted into the roller groove; 3. The first bracket 121 and the second bracket 122 are inserted into the annular groove, and the roller 14 is clamped between the first bracket 121 and the fixing seat 11 and between the second bracket 122 and the fixing seat 11; 4. After the screw passes through the second through hole 1225 on the second bracket 122, it is fixedly connected to the second threaded hole 1217 on the first bracket 121.

[0042] In order to facilitate the insertion of the first bracket 121 and the second bracket 122 into the annular groove, a left guide surface 1218 is provided on the first bracket 121 and a right guide surface 1224 is provided on the second bracket 122 .

[0043] See also Figure 1 At least one detachable blocking cover 120 is provided on the deflection bracket 12, and the roller 14 is clamped between the blocking cover 120 and the deflection bracket 12. Figure 6 and Figure 7As shown, the blocking cover 120 is provided with a fixing hole 1201 and a boss 1202, the boss 1202 is provided with an arc hole 1203, and the second bracket 122 is provided with a blocking hole 1221 and a third threaded hole 1222. After the screw passes through the fixing hole 1201, it is fixedly connected to the third threaded hole 1222. When the screw passes through the fixing hole 1201 and is fixedly connected to the third threaded hole 1222, the boss 1202 passes through the blocking hole 1221 and clamps the roller 14 between the arc hole 1203 and the roller groove.

[0044] In this embodiment, the rollers 14 are spherical. When multiple rollers 14 are disposed between the deflection bracket 12 and the fixed seat 11, the rollers 14 can be used to reduce the resistance encountered during the circumferential movement of the deflection bracket 12 relative to the fixed seat 11. However, since the drill rod is clamped by the clamping mechanism 3, which is disposed on the first bracket 121 via the lifting mechanism 2, the first bracket 121 may become stuck between the deflection bracket 12 and the fixed seat 11 if a force is applied to one side. Therefore, when the rollers 14 are clamped between the blocking cover 120 and the deflection bracket 12, the blocking cover 120 can drive the rollers 14 to slide along the roller grooves to prevent the rollers 14 from becoming stuck between the deflection bracket 12 and the fixed seat 11.

[0045] See also Figure 8 In other embodiments, an arc groove 1203 is provided on the boss 1202. When the screw passes through the fixing hole 1201 and is fixedly connected to the third threaded hole 1222, the boss 1202 passes through the blocking hole 1221 and clamps the roller 14 between the arc groove 1203 and the roller groove.

[0046] Preferably, a roller hole 1215 is provided on the first bracket 121 , and the roller 14 is clamped between the roller hole 1215 and the roller groove. The roller hole 1215 can drive the roller 14 to slide along the roller groove to prevent the roller 14 from being stuck between the deflection bracket 12 and the fixing seat 11 .

[0047] See also Figure 1 、 Figure 4 and Figure 11 In this embodiment, the lifting mechanism 2 includes a lifting cylinder 21, which is vertically mounted on the first bracket 121 of the swing arm 1. The clamping mechanism 3 is disposed below the lifting cylinder 21 and connected to the push rod 211 of the lifting cylinder 21. In other embodiments, the lifting mechanism 2 may also include a lifting cylinder, which is mounted on the swing arm 1. The clamping mechanism 3 is disposed below the lifting cylinder and connected to the push rod of the lifting cylinder.

[0048] Lifting cylinder 2 is fixedly connected to first bracket 121 via screws. Lifting mechanism 2 also includes a guide post 22, whose central axis is parallel to the central axis of lifting cylinder 21. First bracket 121 is provided with a guide post hole 1212. Guide post 22 passes through guide post hole 1212 and is fixedly connected to clamping mechanism 3. Push rod 211 is rotatably connected to clamping mechanism 3. When push rod 211 moves downward, guide post 22 moves downward with clamping mechanism 3.

[0049] See also Figure 11 The clamping mechanism 3 includes a clamping cylinder 31, a push plate 32, and a clamping block 33. The clamping cylinder 31 pushes the clamping block 33 to move laterally through the push plate 32. In other embodiments, the clamping mechanism 3 may also include a clamping cylinder, a push plate 32, and a clamping block 33. The clamping cylinder pushes the clamping block 33 to move laterally through the push plate 32.

[0050] In this embodiment, the clamping mechanism 3 further includes a housing 35 and a mounting base. The housing 35 is used to house the clamping cylinder 31, push plate 32, clamping block 33, and mounting base. An elastic member 34 is disposed between the clamping block 33 and the mounting base. Specifically, the clamping cylinder 31, push plate 32, clamping block 33, and mounting base are disposed within the housing 35. The push plate 32 is provided with an inclined guide surface 321, and the clamping block 33 is provided with an inclined mating surface 331. When the clamping cylinder 31 pushes the push plate 32 downward, the guide surface 321, through the mating surface 331, pushes the clamping block 33 laterally inward, squeezing the elastic member 34 to grasp the end of the drill rod. When the push plate 32 is pushed upward, the elastic member 34 returns to its original position and extends, pushing the clamping block 33 laterally outward.

[0051] See also Figure 12 、 Figure 13 and Figure 14 The mounting base includes an upper mounting base 36 and a lower mounting base 37. The upper mounting base 36 is provided with an upper mounting hole 362, and the lower mounting base 37 is provided with a lower mounting hole 372. A screw passes through the upper mounting hole 362 and is fixedly connected to the lower mounting hole 372; alternatively, a screw passes through the lower mounting hole 372 and is fixedly connected to the upper mounting hole 362. The upper mounting base 36 is provided with a mounting groove 361, and the clamping block 33 is inserted into the mounting groove 361. The guide surface 321 pushes the clamping block 33 to move laterally inward along the mounting groove 361 through the mating surface 331, and the elastic member 34 pushes the clamping block 33 to move laterally outward along the mounting groove 361.

[0052] See also Figure 11 、 Figure 13 and Figure 14A limit block 332 is provided at the lower part of the clamping block 33, and a first limit hole 3321 is provided on the limit block 332. A limit groove 37 is provided on the lower mounting seat 37, and second limit holes 3371 are provided on the two opposite side walls of the limit groove 37. The elastic member 34 is a coil spring. The limit rod 39 passes through the second limit hole 3371, the coil spring and the first limit hole 3321 on the inner side of the lower mounting seat 37 in sequence, and is inserted into the second limit hole 3371 on the outer side of the lower mounting seat 37.

[0053] In this embodiment, a third through hole 363 is provided on the upper mounting seat 36, and a fourth through hole 373 is provided on the lower mounting seat 37. When the screw passes through the upper mounting hole 362 and is fixedly connected to the lower mounting hole 372 (or, when the screw passes through the lower mounting hole 372 and is fixedly connected to the upper mounting hole 362), the drill rod is inserted into the third through hole 363 and the fourth through hole 373 to enable the drill rod to be clamped to the clamping block 33.

[0054] See also Figure 11 The mounting seat is rotatably connected to the shell 35. In this embodiment, a cover body 351 is provided below the shell 35, and a bearing 38 is provided between the cover body 351 and the lower mounting seat 37. When the drill rod is clamped in the clamping block 33, the mounting seat can be rotated relative to the shell 35 through the bearing 38 to realize the rotational connection between the drill rod and the adjacent drill rod below.

[0055] The above are only preferred embodiments of the present invention. The scope of protection of the present invention shall be based on the scope defined by the claims. Several improvements and modifications made by those skilled in the art without departing from the spirit and scope of the present invention should also be regarded as the scope of protection of the present invention.

Claims

1. A drill rod handling device, characterized in that: The device comprises a rotary arm, a lifting mechanism and a clamping mechanism, wherein the length of the rotary arm is greater than the height of the rotary arm, the lifting mechanism is provided on the rotary arm and deflects circumferentially with the rotary arm, the clamping mechanism is provided on the lifting mechanism and rises or falls with the lifting mechanism, and the clamping mechanism is used to clamp the drill rod; The rotary arm includes a fixed seat, a deflection bracket and a drive motor, the drive motor is arranged on the deflection bracket, a driving wheel is provided on the output shaft of the drive motor, an arc-shaped rack is provided on the fixed seat, the driving wheel is engaged with the arc-shaped rack, and the lifting mechanism is arranged on the deflection bracket; The rotary arm further comprises a plurality of rollers, which are arranged between the deflection bracket and the fixing seat; The fixing seat includes a first fixing seat and a second fixing seat in a semicircular ring shape, wherein the arc-shaped rack is arranged on the first fixing seat, or at the junction of the first fixing seat and the second fixing seat; the first fixing seat is provided with a first annular groove, the first annular groove is provided with a first roller groove, the roller can be embedded in the first roller groove and roll along the first roller groove; the second fixing seat is provided with a second annular groove, the second annular groove is provided with a second roller groove, the roller can be embedded in the second roller groove and roll along the second roller groove; When the screw passes through the first through hole of the second fixing seat and is fixedly connected to the first threaded hole of the first fixing seat, the first annular groove and the second annular groove are spliced into a circumferentially continuous and complete annular groove, one end of the deflection bracket can be inserted into the annular groove and rotate relative to the annular groove, and the roller enters the roller groove and can rotate relative to the roller groove; The lifting mechanism includes a lifting cylinder, which is provided on the rotary arm, and the clamping mechanism is provided below the lifting cylinder and connected to the push rod of the lifting cylinder; or the lifting mechanism includes a lifting cylinder, which is provided on the rotary arm, and the clamping mechanism is provided below the lifting cylinder and connected to the push rod of the lifting cylinder; The clamping mechanism includes a clamping cylinder, a push plate and a clamping block, wherein the clamping cylinder pushes the clamping block to move laterally through the push plate; or the clamping mechanism includes a clamping cylinder, a push plate and a clamping block, wherein the clamping cylinder pushes the clamping block to move laterally through the push plate; The clamping mechanism further includes a shell, and the clamping oil cylinder or the clamping air cylinder, the push plate and the clamping block are arranged in the shell; the clamping mechanism further includes a mounting seat, and the mounting seat is arranged in the shell; the mounting seat is rotatably connected to the shell.

2. The drill rod handling device according to claim 1, wherein: The deflection bracket is provided with at least one detachable blocking cover, and the roller is clamped between the blocking cover and the deflection bracket.

3. The drill rod handling device according to claim 2, wherein: The blocking cover is provided with a fixing hole and a boss, and the boss is provided with an arc-shaped groove or an arc-shaped hole.

4. The drill rod handling device according to claim 1, wherein: The push plate is provided with an inclined guide surface, and the clamping block is provided with an inclined matching surface. The guide surface pushes the clamping block to move laterally inward through the matching surface.

5. The drill rod handling device according to claim 4, wherein: An elastic member is provided between the clamping block and the mounting seat, and the elastic member pushes the clamping block to move laterally outward.

6. The drill rod handling device according to claim 5, wherein: It also includes screws, and the mounting seat includes an upper mounting seat and a lower mounting seat. The upper mounting seat is provided with an upper mounting hole, and the lower mounting seat is provided with a lower mounting hole. The screw passes through the upper mounting hole and is fixedly connected to the lower mounting hole.

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