Drill rod clamp and pile driver

Abstract

The present invention discloses a drill rod clamp and a pile driver, which solves the problem of insufficient power for sinking a drill rod. The drill rod clamp comprises a clamp body, a first driver and a second driver, wherein the first driver and the second driver are respectively hinged to the clamp body, a first push rod is provided on the first driver, and a second push rod is provided on the second driver, when the first driver stops working, the second driver pushes the second push rod to move outward, and when the second driver stops working, the first driver pushes the first push rod to work outward.

Description

Technical Field

[0001] The invention belongs to the field of pile driver equipment and relates to a drill rod clamp and a pile driver. Background Art

[0002] Some existing pile drivers include a pile driver platform, a column, a drill rod clamp and a driving device, wherein the column and the driving device are respectively arranged on the pile driver platform, the drill rod clamp is arranged on the column, the drill rod clamp is used to clamp the upper end of the drill rod, and the driving device clamps the lower end of the drill rod. The driving device is used to drive the drill rod to move downward, and during the downward movement of the drill rod, the drill rod clamp moves downward with the drill rod.

[0003] Since the drill rod clamp is not provided with a power source, the existing drill rod sinking only relies on the power source provided by the driving device. When the drill rod encounters strong soil resistance during the sinking process, the driving device will have insufficient power and it will be difficult to sink the drill rod quickly. Summary of the invention

[0004] In view of this, an object of the present invention is to provide a drill rod holder and a pile driver to solve the problem of insufficient sinking power of the drill rod.

[0005] In order to solve the above technical problems, the present invention provides a drill rod clamp, which includes a clamp body, a first driver and a second driver. The volume of the first driver and the volume of the second driver are both smaller than the volume of the clamp body. The first driver and the second driver are respectively hinged to the clamp body. The first driver is provided with a first push rod, and the second driver is provided with a second push rod. When the first driver stops working, the second driver pushes the second push rod to move outward. When the second driver stops working, the first driver pushes the first push rod to work outward.

[0006] Furthermore, it includes a third driver and a fixed seat, the third driver is hinged to the clamp body, the third driver is provided with a third push rod, the third push rod is hinged to the fixed seat, the first driver and the second driver are arranged on the fixed seat, and when the third driver pushes the third push rod to reciprocate, the first driver and the second driver both rotate around the clamp body.

[0007] Furthermore, it also includes a tension spring, wherein the tension spring is used to connect the first driver and the fixing seat, and / or the tension spring is used to connect the second driver and the fixing seat.

[0008] Furthermore, the first driver is provided with at least one vertically arranged reinforcing rib, the reinforcing rib is provided with a sliding block, one end of the tension spring is arranged on the sliding block, and the other end of the tension spring is arranged on the fixing seat.

[0009] Furthermore, an ear seat is provided at the upper end of the clamp body, and the ear seat, the fixing seat, the first driver and the second driver are connected via a pivot.

[0010] Furthermore, the ear seat is provided with three protrusions, and the first driver and the second driver are respectively arranged between two adjacent protrusions.

[0011] Furthermore, it also includes a third driver, a fourth driver, a first fixed seat and a second fixed seat, the third driver is hinged to the clamp body, the third driver is provided with a third push rod, the third push rod is hinged to the first fixed seat, the first driver is arranged on the first fixed seat, and during the process that the third driver pushes the third push rod to reciprocate, the first driver rotates around the clamp body; the fourth driver is hinged to the clamp body, the fourth driver is provided with a fourth push rod, the fourth push rod is hinged to the second fixed seat, the fourth driver is arranged on the second fixed seat, and during the process that the fourth driver pushes the fourth push rod to reciprocate, the second driver rotates around the clamp body.

[0012] Furthermore, a first protective cover is provided on the top of the first push rod, and / or a second protective cover is provided on the top of the second push rod.

[0013] The pile driver comprises a column and a drill rod clamp, wherein the drill rod clamp is the drill rod clamp described in any one of the above technical solutions, a ladder is arranged on the column, the ladder comprises two vertical poles and a plurality of cross bars for connecting the two vertical poles, and the drill rod clamp is slidably connected to the vertical poles.

[0014] Furthermore, a guide block is provided between two adjacent cross bars, and a guide groove parallel to the vertical bar is provided on the guide block, and the first push rod and / or the second push rod can be inserted into the guide groove.

[0015] Compared with the prior art, the drill rod clamp of the present invention comprises a clamp body, a first driver and a second driver, wherein the first driver is provided with a first push rod, and the second driver is provided with a second push rod, when the first driver stops working, the second driver pushes the second push rod to move outward, the second push rod moves outward and abuts against the cross bar on the ladder, after the second push rod abuts against the cross bar on the ladder, the cross bar on the ladder provides a thrust for the second push rod that continues to move outward, so that the second push rod pushes the clamp body downward through the second driver; when the second driver stops working, the first driver pushes the first push rod to work outward, the first push rod moves outward and abuts against the cross bar on the ladder, after the first push rod abuts against the cross bar on the ladder, the cross bar on the ladder provides a thrust for the first push rod that continues to move outward, so that the first push rod pushes the clamp body downward through the first driver. With such a design, the first driver and the second driver work alternately, and provide a continuous sinking thrust for the drill rod through the clamp body, so as to solve the problem of insufficient sinking power of the drill rod.

[0016] In addition, the first driver and the second driver of the present invention are respectively hinged to the clamp body. With such a design, the first push rod can abut against the cross bar and provide a downward thrust to the clamp body by changing the angle between the first driver and the clamp body. Similarly, the second push rod can abut against the cross bar and provide a downward thrust to the clamp body by changing the angle between the second driver and the clamp body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a partial stereoscopic diagram of the pile driver of the present invention;

[0018] Figure 2 is a stereoscopic view of a drill rod holder of the present invention;

[0019] Figure 3 A three-dimensional diagram of the drill rod holder of the present invention (excluding the holder body);

[0020] Figure 4 It is a rear view of the drill rod clamp of the present invention (excluding the clamp body);

[0021] Figure 5 is a three-dimensional diagram of the fixing seat of the present invention;

[0022] Figure 6 A three-dimensional diagram of the ear seat of the present invention;

[0023] Figure 7 It is a three-dimensional diagram of the third drive. DETAILED DESCRIPTION

[0024] In order to facilitate the understanding of the technical solution of the present invention, a detailed description is given below in conjunction with the accompanying drawings and specific embodiments.

[0025] Embodiment 1

[0026] See also Figure 2 and Figure 3 A drill rod clamp includes a clamp body 6, a first driver 1 and a second driver 2. The volumes of the first driver 1 and the second driver 2 are both smaller than the volume of the clamp body 6. The first driver 1 and the second driver 2 are respectively hinged to the clamp body 6. The first driver 1 is provided with a first push rod 11, and the second driver 2 is provided with a second push rod 21, that is, the first driver 1 and the second driver 2 are both telescopic linear drivers.

[0027] The drill rod clamp provided by the present invention has a clamping mechanism disposed on the clamping body 6, which can clamp both the drill rod and the precast pile.

[0028] See also Figure 1 , Figure 2 and Figure 3 , the working principle of the drill rod clamp: when the first driver 1 stops working, the second driver 2 pushes the second push rod 21 to move outward, the second push rod 21 moves outward and resists with the rigid cross bar 72 on the ladder, after the second push rod 21 resists with the cross bar 72 on the ladder, the cross bar 72 on the ladder provides a thrust for the second push rod 21 that continues to move outward, and the second push rod 21 that receives the thrust pushes the clamp body 6 to move downward through the second driver 2, so that the clamp body 6 pushes the drill rod to sink; when the second driver 2 stops working, the first driver 1 pushes the first push rod 11 to work outward, the first push rod 11 moves outward and resists with the cross bar 72 on the ladder, after the first push rod 11 resists with the cross bar 72 on the ladder, the cross bar 72 on the ladder provides a thrust for the first push rod 11 that continues to move outward, so that the first push rod 11 pushes the clamp body 6 to move downward through the first driver 1. In this embodiment, when the first driver 1 stops working, the first push rod 11 does not abut against the crossbar 72 on the ladder. Similarly, when the second driver 2 stops working, the second push rod 21 does not abut against the crossbar 72 on the ladder. In addition, the first push rod 11 and the second push rod 12 push the adjacent crossbars 72 alternately in sequence.

[0029] See also Figure 2 and Figure 4 The drill rod clamp also includes a third driver 5 and a fixed seat 3. The third driver 5 is hinged to the clamp body 6. The third driver 5 is provided with a third push rod 501. The third push rod 501 is hinged to the fixed seat 3. The first driver 1 and the second driver 2 are arranged on the fixed seat 3. When the third driver 5 pushes the third push rod 501 to reciprocate, the first driver 1 and the second driver 2 are both deflected around the clamp body 6.

[0030] See also Figure 2The drill rod clamp further includes a tension spring 4, which is used to connect the first driver 1 and the fixing seat 3. The tension spring 4 pulls the first driver 1 to move toward the fixing seat 3 to achieve fine adjustment of the angle between the center axis of the first driver 1 and the vertical center axis of the clamp body 6. Of course, in other embodiments of the present invention, the tension spring 4 can be used to connect the second driver 2 and the fixing seat 3; or, in the case of providing two tension springs 4, one tension spring 4 is used to connect the first driver 1 and the fixing seat 3, and the other tension spring 4 is used to connect the second driver 2 and the fixing seat 3.

[0031] In this embodiment, the drill rod clamp uses "the third driver 5 to adjust the angle between the first driver 1 and the clamp body 6 in a large range" and "the tension spring 4 to adjust the angle between the first driver 1 and the clamp body 6 in a small range" to achieve that after the first push rod 11 abuts against the cross bar 72 on the ladder, the cross bar 72 on the ladder provides a thrust for the first push rod 11 to continue to move outward. Similarly, the drill rod clamp uses "the third driver 5 to adjust the angle between the second driver 2 and the clamp body 6 in a large range" and "the tension spring 4 to adjust the angle between the second driver 2 and the clamp body 6 in a small range" to achieve that after the second push rod 21 abuts against the cross bar 72 on the ladder, the cross bar 72 on the ladder provides a thrust for the second push rod 21 to continue to move outward.

[0032] Since the force output by the oil cylinder is greater than that of the air cylinder, the first driver 1, the second driver 2 and the third driver 5 are preferably oil cylinders, and the first driver 1 and the second driver 2 are preferably of the same specifications.

[0033] See also Figure 2 The housing of the first driver 1 is provided with at least one reinforcing rib arranged parallel to the telescopic direction of the first push rod 11, the reinforcing rib is a first screw 12, a slider 13 is arranged on the first screw 12, one end of the tension spring 4 is arranged on the slider 13, and the other end of the tension spring 4 is arranged on the fixing seat 3. Figure 3 and Figure 4 As shown, the slider 13 includes a first slider 131 and a second slider 132. The first slider 131 is provided with a threaded hole 1312, and the second slider 132 is provided with a first mounting hole 1321 and a through hole 1322. After the screw passes through the through hole 1322, it is fixedly connected with the threaded hole 1312. One end of the tension spring 4 is passed through the first mounting hole 1321, and the other end of the tension spring is passed through the second mounting hole 31 on the fixing seat 3.

[0034] The second driver 2 is provided with at least one vertically arranged second screw rod 22. In other embodiments, when the tension spring 4 is used to connect the second driver 2 and the fixing seat 3, a slider 13 may also be provided on the second screw rod 22. The same parts will not be described again here.

[0035] See also Figure 2 and Figure 3 The upper end 601 of the clamp body 6 is provided with an ear seat 62, and the ear seat 62, the fixing seat 3, the first driver 1 and the second driver 2 are connected by a pivot 8. Figure 5 and Figure 6 As shown, three protrusions 621 are provided on the ear seat 62, the first driver 1 and the second driver 2 are respectively arranged between two adjacent protrusions 621, each protrusion 621 is provided with a first axial hole 6211, limiting plates 32 are provided on both sides of the fixing seat 3, the limiting plates 32 are provided with a second axial hole 321, the first driver 1 is provided with a third axial hole, and the second driver 2 is provided with a fourth axial hole, and the pivot 8 passes through the second axial hole 321 on the left side, the first axial hole 6211 on the left side, the fourth axial hole, the first axial hole 6211 in the middle, the third axial hole, the first axial hole 6211 on the right side and the second axial hole 321 on the right side in sequence.

[0036] See also Figure 7 An upper mounting seat 51 is provided on the back of the fixing seat 3, the third push rod 501 is connected to the upper mounting seat 51 through an upper rotating shaft 53, a lower mounting seat 52 is provided on the back 602 of the clamp body 6, and the third driver 5 is connected to the lower mounting seat 52 through a lower rotating shaft 54.

[0037] See also Figure 3 A first protective cover 111 is provided at the top of the first push rod 11, and / or a second protective cover 211 is provided at the top of the second push rod 12. In this embodiment, a first protective cover 111 is provided at the top of the first push rod 11, and a second protective cover 211 is provided at the top of the second push rod 12. The first protective cover 111 is used to prevent the first push rod 11 from directly abutting against the cross bar 72 on the ladder to increase the service life of the first push rod 11; the second protective cover 211 is used to prevent the second push rod 21 from directly abutting against the cross bar 72 on the ladder to increase the service life of the second push rod 21.

[0038] Preferably, the first protective cover 111 is made of plastic, and a first arc-shaped fillet 112 is provided at the top of the first protective cover 111; the second protective cover 211 is made of plastic, and a second arc-shaped fillet 212 is provided at the top of the second protective cover 211; the first fillet 112 is used to increase the contact area between the first protective cover 111 and the upper cross bar 72 of the ladder, and the second fillet 212 is used to increase the contact area between the second protective cover 211 and the upper cross bar 72 of the ladder.

[0039] See also Figure 1 The pile driver provided in this embodiment includes a column 7 and a drill rod holder, the drill rod holder is the drill rod holder described in this embodiment, a ladder is arranged on the column, the ladder includes two vertical rods 71 ​​and a plurality of cross rods 72 for connecting the two vertical rods 71, and the drill rod holder is slidably connected to the vertical rods 71. Figure 2As shown, four slides 61 are provided on the back side 602 of the clamp body 6, and a slide groove 611 is provided on the inner side (i.e., the side facing the ladder) of the four slides 61, and the vertical rod 71 can be inserted into the slide groove 611. Two slides 61 of the four slides 61 are arranged on the left side of the back side 602 of the clamp body 6 and are slidably connected to one of the vertical rods 71, and the remaining two slides 61 of the four slides 61 are arranged on the right side of the back side 602 of the clamp body 6 and are slidably connected to the other vertical rod 71.

[0040] See also Figure 1 A guide block 73 is provided between two adjacent cross bars 72. A guide groove 731 parallel to the vertical bar 71 is provided on the guide block 73. The first push rod 11 and / or the second push rod 21 can be inserted into the guide groove 731. Figure 1 It can be seen that in the present embodiment, two guide blocks 73 are provided between two adjacent cross bars 72, and each guide block 73 is provided with a guide groove 731. Since a first protective cover 111 is provided at the top of the first push rod 11, and a second protective cover 211 is provided at the top of the second push rod 12, the first push rod 11 can be inserted into the guide groove 731 on the left and the first protective cover 111 slides along the guide groove 731 on the left, and the second push rod 21 can be inserted into the guide groove 731 on the right and the second protective cover 211 slides along the guide groove 731 on the right.

[0041] Embodiment 2

[0042] A drill rod clamp includes a clamp body, a first driver and a second driver, the first driver and the second driver are respectively hinged to the clamp body, the first driver is provided with a first push rod, and the second driver is provided with a second push rod. When the first driver stops working, the second driver pushes the second push rod to move outward, and when the second driver stops working, the first driver pushes the first push rod to work outward.

[0043] The difference from Example 1 is that: in this embodiment, the drill rod clamp also includes a third driver, a fourth driver, a first fixed seat and a second fixed seat, the third driver is hinged to the clamp body, the third driver is provided with a third push rod, the third push rod is hinged to the first fixed seat, the first driver is arranged on the first fixed seat, and during the process of the third driver pushing the third push rod to reciprocate, the first driver rotates around the clamp body; the fourth driver is hinged to the clamp body, the fourth driver is provided with a fourth push rod, the fourth push rod is hinged to the second fixed seat, the fourth driver is arranged on the second fixed seat, and during the process of the fourth driver pushing the fourth push rod to reciprocate, the second driver rotates around the clamp body.

[0044] The above are only preferred embodiments of the present invention. The protection scope 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 protection scope of the present invention.

Claims

1. A drill rod holder, characterized in that: The drill rod clamp is slidably connected to the vertical pole of the ladder of the column of the pile driver, and includes a clamp body, a first driver and a second driver. The volume of the first driver and the volume of the second driver are both smaller than the volume of the clamp body. The first driver and the second driver are located at the top of the clamp body and are respectively hinged to the clamp body. The first driver is provided with a first push rod, and the second driver is provided with a second push rod. When the first driver stops working, the second driver pushes the second push rod to move outward. After the second push rod abuts against the cross bar on the ladder of the column, the cross bar on the ladder The rod provides a thrust for the second push rod that continues to move outward, and the second push rod that is pushed pushes the clamp body downward through the second driver; when the second driver stops working, the first driver pushes the first push rod to work outward, and after the first push rod abuts against the cross bar on the ladder, the cross bar on the ladder provides a thrust for the first push rod that continues to move outward, so that the first push rod pushes the clamp body downward through the first driver; the first driver and the second driver work alternately to provide continuous sinking thrust for the drill rod through the clamp body.

2. The drill rod holder according to claim 1, characterized in that: It also includes a third driver and a fixed seat, the third driver is hinged to the clamp body, the third driver is provided with a third push rod, the third push rod is hinged to the fixed seat, the first driver and the second driver are arranged on the fixed seat, and when the third driver pushes the third push rod to reciprocate, the first driver and the second driver both rotate around the clamp body.

3. The drill rod holder according to claim 2, characterized in that: It also includes a tension spring, which is used to connect the first driver and the fixing seat, and / or the tension spring is used to connect the second driver and the fixing seat.

4. The drill rod holder according to claim 3, characterized in that: The first driver is provided with at least one vertically arranged reinforcing rib, the reinforcing rib is provided with a sliding block, one end of the tension spring is arranged on the sliding block, and the other end of the tension spring is arranged on the fixing seat.

5. The drill rod holder according to claim 2, characterized in that: An ear seat is provided at the upper end of the clamp body, and the ear seat, the fixing seat, the first driver and the second driver are connected via a pivot.

6. The drill rod holder according to claim 5, characterized in that: The ear seat is provided with three protrusions, and the first driver and the second driver are respectively arranged between two adjacent protrusions.

7. The drill rod holder according to claim 1, characterized in that: It also includes a third driver, a fourth driver, a first fixed seat and a second fixed seat, the third driver is hinged to the clamp body, the third driver is provided with a third push rod, the third push rod is hinged to the first fixed seat, the first driver is arranged on the first fixed seat, and during the process that the third driver pushes the third push rod to reciprocate, the first driver rotates around the clamp body; the fourth driver is hinged to the clamp body, the fourth driver is provided with a fourth push rod, the fourth push rod is hinged to the second fixed seat, the fourth driver is arranged on the second fixed seat, and during the process that the fourth driver pushes the fourth push rod to reciprocate, the second driver rotates around the clamp body.

8. The drill rod holder according to claim 1, characterized in that: A first protective cover is disposed on the top of the first push rod, and / or a second protective cover is disposed on the top of the second push rod.

9. A pile driver, characterized in that: It comprises a column and a drill rod clamp, wherein the drill rod clamp is the drill rod clamp as described in any one of claims 1 to 8, a ladder is arranged on the column, the ladder comprises two vertical poles and a plurality of cross bars for connecting the two vertical poles, and the drill rod clamp is slidably connected to the vertical poles.

10. The pile driver according to claim 9, characterized in that: A guide block is provided between two adjacent cross bars, and a guide groove parallel to the vertical bar is provided on the guide block, and the first push rod and / or the second push rod can be inserted into the guide groove.

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