Pile hole mud grabbing bucket with pulley block

Abstract

The pile hole mud grabbing bucket comprises a vertical frame, a fixing seat, a mud grabbing bucket body, a lifting seat, a push-pull rod and a steel wire rope, the fixing seat is fixedly installed at the lower end of the vertical frame, a lower pulley block and a steel wire rope connecting part are arranged on the upper side of the fixing seat, and a first connecting part and a second connecting part are arranged at the upper end of the mud grabbing bucket body. The first connecting part is hinged to the lower end of the fixed seat; the lifting seat is mounted in the upper end of the vertical frame in a lifting manner, the upper end of the push-pull rod is hinged to the lifting seat, and the lower end of the push-pull rod is hinged to the second connecting part of the mud grabbing bucket; an upper pulley block is arranged in the lifting seat, the steel wire rope is wound on the upper pulley block and the lower pulley block, one end of the steel wire rope extends upwards to be connected with external rope pulling equipment, the other end of the steel wire rope is connected with the steel wire rope connecting part, and a lifting lug is arranged on the upper side of the lifting seat and used for being connected with an external crane sling. The mud grabbing device grabs mud in a steel wire rope traction mode, the mud grabbing force is large, and the mud grabbing device can go deep below a water accumulation level in a pile hole to grab mud.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of mud grab, especially to a pile hole mud grab with a pulley block. BACKGROUND

[0002] When building a building, it is necessary to punch a pile hole on a foundation, and it is also necessary to timely grab the sand and soil in the pile hole. The main equipment for grabbing the sand and soil is a mud grab. In the prior art, the structure of the mud grab can be seen from Chinese patent document CN102583151A, which discloses a single-cable electric grab, comprising a head cover, a motor, a speed reducer, a steel wire roller, an upper support beam, an upper support beam pulley, a lower support beam, a lower support beam pulley, two bucket bodies, a support rod, a steel wire, and an opening and closing control device. The upper support beam is arranged in an eight-character shape on a horizontal plane, and the upper support beam is symmetrically sleeved with two upper support beam pulleys with multiple sliding grooves. The lower support beam is a straight shaft, and the lower support beam is also symmetrically sleeved with two lower support beam pulleys with multiple sliding grooves and corresponding to the multiple sliding grooves on the upper support beam pulleys. The two inner sliding grooves of the two lower support beam pulleys are wide-rim sliding grooves. The grab has a high actual carrying capacity, but still has the following defects: since there is usually a large amount of accumulated water in the pile hole, when the motor, the speed reducer, and the opening and closing control device are immersed below the accumulated water level in the pile hole, the motor, the speed reducer, and the opening and closing control device are easily damaged. In addition, since the grab is driven by the motor and the speed reducer of the grab to work, the weight and space of the grab are greatly limited, so the power of the motor and the speed reducer is greatly limited, resulting in that the grabbing force of the grab is greatly limited. CONTENT OF THE UTILITY MODEL

[0003] The utility model solves the technical problem in the prior art, and provides a pile hole mud grab with a pulley block. The pile hole mud grab uses a steel wire rope traction method to grab mud, has a large mud grabbing force, and can grab mud below the accumulated water level in the pile hole.

[0004] The utility model discloses a pile hole mud grab with pulley block, including stand, fixed base, mud grab, lifting seat, push -and -pull rod and steel wire rope, the fixed base fixed mounting is in the lower extreme of stand, the upper side of fixed base is equipped with lower pulley block and steel wire rope connecting portion, the upper end of mud grab is equipped with first connecting portion and second connecting portion, first connecting portion is hinged with the lower extreme of fixed base, lifting seat can lift and install in the upper extreme of stand, the upper end of push -and -pull rod is hinged with lifting seat, the lower extreme of push -and -pull rod is hinged with the second connecting portion of mud grab, be equipped with upper pulley block in lifting seat, the steel wire rope is around and is installed on upper pulley block and lower pulley block, and one end of steel wire rope goes up and reaches to connect the pull rope equipment of outside, and the other end of steel wire rope is connected with steel wire rope connecting portion, the upper side of lifting seat is equipped with the lug, and the lug is used for connecting the crane cable of outside.

[0005] In the above technical scheme, the number of mud grabs is two, and the two mud grabs are opposite and symmetrical to each other.

[0006] In the above technical scheme, the stand includes four columns, and connecting plates are connected between the four columns.

[0007] In the above technical scheme, the lower pulley block includes a first pulley, a second pulley and a third pulley, the upper pulley block includes a fourth pulley, a fifth pulley and a sixth pulley, and the steel wire rope is connected to the steel wire rope connecting portion after being sequentially wound around the first pulley, the fourth pulley, the second pulley, the fifth pulley, the third pulley and the sixth pulley.

[0008] In the above technical scheme, the first pulley, the second pulley, the third pulley, the fourth pulley, the fifth pulley and the sixth pulley each include a main shaft, a hollow shaft is sleeved on the main shaft, a bearing is mounted on the middle part of the hollow shaft, a pulley body is mounted on the bearing, inner flanges are mounted on the two sides of the pulley body, and a first sealing ring is arranged between the inner flanges and the pulley body.

[0009] In the technical scheme, the bearing is a cylindrical needle bearing, the bearing comprises an outer ring, an inner ring and cylindrical needles mounted between the outer ring and the inner ring, the pulley body is mounted on the outer ring of the bearing, the inner side of the inner flange abuts against the outer ring side of the bearing; the hollow shaft is further provided with a positioning ring, the inner side of the positioning ring abuts against the inner ring side of the bearing, and the outer side of the positioning ring abuts against the inner side of the outer flange.

[0010] In the technical scheme, the hollow shaft is further screwed with nuts on both ends, the inner side of the nut abuts against the outer side of the outer flange to lock or loosen the outer flange.

[0011] In the technical scheme, the hollow shaft is provided with a first annular mounting position for mounting the bearing and the positioning ring, a second annular mounting position for mounting the outer flange and a third annular mounting position for screwing the nut, the diameter of the first annular mounting position is greater than that of the second annular mounting position, and the diameter of the second annular mounting position is greater than that of the third annular mounting position; the main shaft is provided with a support on each end, and the support is mounted on the fixed seat or the lifting seat.

[0012] In the technical scheme, a plurality of positionally opposite pin holes and screw holes are arranged between the pulley body and the inner flange, a positioning pin is arranged in the pin hole, and a positioning bolt is arranged in the screw hole.

[0013] In the technical scheme, the inner friction ring and the second sealing ring are in elastic interference fit, the groove wall of the first mounting groove and the second sealing ring are in elastic interference fit, the outer friction ring and the fourth sealing ring are in elastic interference fit, and the groove wall of the second mounting groove and the fourth sealing ring are in elastic interference fit.

[0014] The utility model discloses beneficial effect is: the utility model in the process of grabbing mud in the pile hole, adopt the lifting cable of crane to lift the lifting seat, utilize the wire rope equipment to pull the wire rope again, and the wire rope is wound on the upper pulley group and lower pulley group, and the wire rope end is connected on the wire rope connecting portion, when the wire rope is pulled upwards, the wire rope can make the lifting seat descend along the stand, push the push -pull rod to push the grab bucket downwards, and then drive the grab bucket to carry out the mud action of grabbing mud, and when the wire rope is relaxed by the wire rope equipment, the whole stand and grab bucket drop downwards under the action of gravity, and the lifting seat is relative to the stand and goes up, and then makes the push -pull rod pull the grab bucket upwards, and drives the grab bucket to open outwards again, therefore, the utility model discloses itself need not set up motor, speed reducer, control device and other electrical components, but is through the external equipment and adopts the wire rope traction mode to grab mud, can dive to the water level below in the pile hole and grab mud, and under the action of the upper pulley group and lower pulley group, can greatly increase the mud strength. In addition, in the preferred mode of the utility model, the overall sealing effect of each pulley of the upper pulley group and lower pulley group is very excellent, and the installation and maintenance of each component of the pulley are relatively easy, and both sides of the pulley main body can be laterally supported by the inner flange, and the inner flange can be supported by the outer flange under the action of the outer friction ring and inner friction ring, thereby making the overall stability of the pulley strong. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the overall structural drawing of the utility model in the grab bucket opening state.

[0016] Figure 2 It is the overall structural drawing of the utility model in the grab bucket mud state.

[0017] Figure 3 It is the winding schematic diagram of wire rope.

[0018] Figure 4 It is the overall structural drawing of first pulley, fourth pulley, second pulley, fifth pulley, third pulley or sixth pulley.

[0019] Figure 5 It is the front structure drawing of first pulley, fourth pulley, second pulley, fifth pulley, third pulley or sixth pulley.

[0020] Figure 6 It is the dispersion structure drawing of first pulley, fourth pulley, second pulley, fifth pulley, third pulley or sixth pulley.

[0021] Figure 7 It is the sectional view along Figure 5 A-A line. DETAILED DESCRIPTION

[0022] The structure principle and working principle of the utility model will be further explained in detail in combination with the drawings.

[0023] As Figures 1-3 shown, the utility model is a kind of pile hole mud grab with pulley block, including stand 100, fixed seat 200, mud grab 300, lifting seat 400, push-pull rod 500 and steel wire rope 600, the fixed seat 200 is fixedly installed in the lower end of stand 100, the upper side of fixed seat 200 is equipped with lower pulley block 700 and steel wire rope connecting portion 202, the upper end of mud grab 300 is equipped with first connecting portion 301 and second connecting portion 302, first connecting portion 301 is hingedly connected with the lower end of fixed seat 200;Lifting seat 400 is installed in the upper end of stand 100 in a liftable manner, the upper end of push-pull rod 500 is hingedly connected with lifting seat 400, the lower end of push-pull rod 500 is hingedly connected with the second connecting portion 302 of mud grab 300;Upper pulley block 800 is equipped in lifting seat 400, steel wire rope 600 is wound on upper pulley block 800 and lower pulley block 700, one end of steel wire rope 600 extends upwards to connect external pull rope equipment, the other end of steel wire rope 600 is connected with steel wire rope connecting portion 202, the upper side of lifting seat 400 is equipped with lifting lug 402, lifting lug 402 is used to connect external crane cable.The utility model itself does not need to set motor, speed reducer, control device and other electrical components, but is dragged by steel wire rope 600 by external equipment to grab mud, can be inlaid to the water level below in pile hole to grab mud;Under the action of upper pulley block 800 and lower pulley block, mud grabbing force can be greatly increased.

[0024] As Figures 1-3 shown, the number of mud grab 300 is two, the position of two mud grabs 300 is opposite and symmetrical with each other, and one push-pull rod 500 is provided for each mud grab 300.

[0025] As Figures 1-3 shown, the stand 100 includes four columns 101, and a connecting plate 102 is connected between the four columns 101, the outer side of lifting seat 400 is provided with a sliding groove 403 corresponding to the column, and the sliding groove 403 is in sliding fit with the column 101.

[0026] As Figures 1-3 shown, the lower pulley block 700 includes a first pulley 701, a second pulley 702 and a third pulley 703, the upper pulley block 800 includes a fourth pulley 801, a fifth pulley 802 and a sixth pulley 803, and the steel wire rope 600 is connected with the steel wire rope connecting portion 202 after being wound on the first pulley 701, the fourth pulley 801, the second pulley 702, the fifth pulley 802, the third pulley 703 and the sixth pulley 803 in sequence.

[0027] The working principle of the utility model is as follows: (1) prepare a crane and a pulling rope equipment, the pulling rope equipment and the crane can be integrated in a device, the sling of the crane is hung on the lifting lug 402 on the upper side of the lifting seat 400, the pulling rope equipment pulls the upper end of the steel wire rope 600, then the pile hole mud grabbing bucket is hoisted into the pile hole to be grabbed by the crane; (2) when the mud grabbing bucket 300 needs to grab mud, the sling of the crane hoists the lifting seat 400, the pulling rope equipment pulls the steel wire rope 600, the steel wire rope 600 is wound on the upper pulley group 800 and the lower pulley group 700, the end of the steel wire rope 600 is connected on the steel wire rope connecting part 202, when the steel wire rope 600 is pulled upwards, the steel wire rope 600 can make the lifting seat 400 descend along the stand 100, push the push-pull rod 500 to push the mud grabbing bucket 300 downwards, and then drive the mud grabbing bucket 300 to perform the mud grabbing action; (3) when the mud grabbing bucket 300 needs to be opened, the pulling rope equipment loosens the steel wire rope 600, the whole stand 100 and the mud grabbing bucket 300 drop downwards under the action of gravity relative to the lifting seat 400, the lifting seat 400 rises relative to the stand 100, then the push-pull rod 500 pulls the mud grabbing bucket 300 upwards, and then drives the mud grabbing bucket 300 to open outwards.

[0028] As Figures 4-7As shown, the first pulley 701, the second pulley 702, the third pulley 703, the fourth pulley 801, the fifth pulley 802 and the sixth pulley 803 respectively include a main shaft 1, a hollow shaft 2 is sleeved on the main shaft 1, a bearing 3 is installed on the middle part of the hollow shaft 2, a pulley body 4 is installed on the bearing 3, inner flanges 5 are respectively installed on both sides of the pulley body 4, and a first sealing ring 6 is arranged between the inner flanges 5 and the pulley body 4; a first installation groove 51 is arranged at the inner ring position of the inner flange 5, an inner friction ring 7 is installed in the first installation groove 51, and a second sealing ring 8 is arranged between the inner friction ring 7 and the groove wall of the first installation groove 51; outer flanges 9 are respectively installed on both ends of the hollow shaft 2, a third sealing ring 10 is arranged between the outer flanges 9 and the hollow shaft 2, and a gap is formed between the outer flanges 9 and the inner flanges 5; a second installation groove 91 is arranged on the inner side of the outer flange 9, the position of the second installation groove 91 is opposite to that of the first installation groove 51, an outer friction ring 11 is installed in the second installation groove 91, a fourth sealing ring 12 is arranged between the outer friction ring 11 and the groove wall of the second installation groove 91, and the outer friction ring 11 and the inner friction ring 7 are in mirror surface friction sealing cooperation. Since the first sealing ring 6 is arranged between the inner flange 5 and the pulley body 4, the second sealing ring 8 is arranged between the inner friction ring 7 and the groove wall of the first installation groove 51, the third sealing ring 10 is arranged between the outer flange 9 and the hollow shaft 2, the fourth sealing ring 12 is arranged between the outer friction ring 11 and the groove wall of the second installation groove 91, and the outer friction ring 11 and the inner friction ring 7 are in mirror surface friction sealing cooperation, therefore, the static connection positions of the utility model are all well sealed through the sealing rings, and the dynamic sealing is well realized through the mirror surface friction sealing cooperation of the dynamic contact positions, so that the overall sealing effect of the utility model is very excellent, the installation and maintenance of the components of the utility model are relatively easy, the both sides of the pulley body 4 of the utility model can be laterally supported by the inner flanges 5, and the inner flanges 5 can be supported by the outer flanges 9 under the action of the outer friction ring 11 and the inner friction ring 7, so that the overall stability of the utility model is strong.

[0029] As Figure 6 and Figure 7As shown, the hollow shaft 2, bearing 3, pulley body 4, inner flange 5, inner friction ring 7, outer flange 9, outer friction ring 11, first sealing ring 6, second sealing ring 8, third sealing ring 10 and fourth sealing ring 12 form a sealed cavity 13 together, and the sealed cavity 13 is filled with lubricating oil. The bearing 3 is a cylindrical needle bearing, which comprises an outer ring 31, an inner ring 32 and cylindrical needles 33 installed between the outer ring 31 and the inner ring 32. The pulley body 4 is installed on the outer ring 31 of the bearing 3, and the inner side of the inner flange 5 abuts against the side of the outer ring 31 of the bearing 3. The hollow shaft 2 is further provided with a positioning ring 14, the inner side of the positioning ring 14 abuts against the side of the inner ring 32 of the bearing 3, and the outer side of the positioning ring 14 abuts against the inner side of the outer flange 9. The hollow shaft 2 is further provided with nuts 15 on both ends, the inner side of the nut 15 abuts against the outer side of the outer flange 9 to lock or loosen the outer flange 9.

[0030] As shown in Figure 6 and Figure 7 , the hollow shaft 2 is provided with a first annular mounting position 21 for mounting the bearing 3 and the positioning ring 14, a second annular mounting position 22 for mounting the outer flange 9 and a third annular mounting position 23 for mounting the nut. The diameter of the first annular mounting position 21 is larger than that of the second annular mounting position 22, and the diameter of the second annular mounting position 22 is larger than that of the third annular mounting position 23. The main shaft 1 is provided with a bracket 18 on both ends, which is installed on the fixed seat 200 or the lifting seat 400. By providing the first annular mounting position 21, the second annular mounting position 22 and the third annular mounting position 23, the installation of each component is easier and more stable. By providing the bracket 18, the main shaft 1 of the pulley can be installed on external equipment, such as a grab bucket, a pile hole machine and other engineering equipment.

[0031] As shown in Figures 3-7 , the outer ring position of the pulley body 4 is provided with a U-shaped groove 41 for winding the steel wire rope.

[0032] As shown in Figure 6 , the pulley body 4 and the inner flange 5 are provided with a plurality of opposite pin holes 16 and screw holes 17, the pin holes are provided with positioning pins, and the screw holes are provided with positioning bolts. In this way, the pulley body 4 and the inner flange 5 can be stably assembled together.

[0033] As shown in Figure 6 and Figure 7As shown, the first sealing ring 6, the second sealing ring 8, the third sealing ring 10 and the fourth sealing ring 12 are nitrile rubber sealing rings respectively. The inner friction ring 7 is in elastic interference fit with the second sealing ring 8, the groove wall of the first mounting groove 51 is in elastic interference fit with the second sealing ring 8, the outer friction ring 11 is in elastic interference fit with the fourth sealing ring 12, and the groove wall of the second mounting groove 91 is in elastic interference fit with the fourth sealing ring 12.

[0034] The above is only the preferred embodiment of the present application, and any slight modification, equivalent change and modification made to the above embodiment according to the technical scheme of the present application shall fall within the scope of the technical scheme of the present application.

Claims

1. A grab bucket for a pile hole having a pulley block, characterised in that: The utility model provides a mud grabbing device, which comprises a stand, a fixing base, a mud grabbing bucket, a lifting base, a push-pull rod and a steel wire rope, the fixing base is fixedly installed at the lower end of the stand, the upper side of the fixing base is provided with a lower pulley block and a steel wire rope connecting part, the upper end of the mud grabbing bucket is provided with a first connecting part and a second connecting part, the first connecting part is hingedly connected with the lower end of the fixing base, the lifting base is movably installed in the upper end of the stand, the upper end of the push-pull rod is hingedly connected with the lifting base, and the lower end of the push-pull rod is hingedly connected with the second connecting part of the mud grabbing bucket, the lifting base is provided with an upper pulley block, the steel wire rope is wound on the upper pulley block and the lower pulley block, one end of the steel wire rope extends upwards to be connected with external pulling rope equipment, the other end of the steel wire rope is connected with the steel wire rope connecting part, the upper side of the lifting base is provided with an ear, and the ear is used for connecting external crane cable.

2. A clay grab for piling holes with a pulley block according to claim 1, characterised in that: The number of the mud grabbing buckets is two, the positions of the two mud grabbing buckets are opposite and symmetrical to each other, and each mud grabbing bucket is correspondingly provided with a push-pull rod.

3. A clay grab for piling holes with a pulley block according to claim 2, characterised in that: The stand comprises four vertical columns, and connecting plates are connected between the four vertical columns, the outer side of the lifting base is provided with a sliding groove corresponding to the vertical columns, and the sliding groove is in sliding fit with the vertical columns.

4. A clay grab for piling holes with a pulley block according to claim 3, characterised in that: The lower pulley block comprises a first pulley, a second pulley and a third pulley, the upper pulley block comprises a fourth pulley, a fifth pulley and a sixth pulley, and the steel wire rope is sequentially wound around the first pulley, the fourth pulley, the second pulley, the fifth pulley, the third pulley and the sixth pulley and then connected with the steel wire rope connecting part.

5. A clay grab for piling holes with a pulley block according to claim 4, characterised in that: The first pulley, the second pulley, the third pulley, the fourth pulley, the fifth pulley and the sixth pulley each comprise a main shaft, a hollow shaft is sleeved on the main shaft, a bearing is installed on the middle part of the hollow shaft, a pulley body is installed on the bearing, inner flanges are respectively installed on the two sides of the pulley body, and a first sealing ring is arranged between the inner flanges and the pulley body; a first installation groove is arranged at the inner ring position of the inner flange, an inner friction ring is installed in the first installation groove, and a second sealing ring is arranged between the inner friction ring and the groove wall of the first installation groove; outer flanges are respectively installed on the two ends of the hollow shaft, a third sealing ring is arranged between the outer flanges and the hollow shaft, and a gap is formed between the outer flanges and the inner flanges; a second installation groove is arranged at the inner side of the outer flange, the position of the second installation groove is opposite to that of the first installation groove, an outer friction ring is installed in the second installation groove, a fourth sealing ring is arranged between the outer friction ring and the groove wall of the second installation groove, and the outer friction ring and the inner friction ring are in mirror surface friction sealing fit.

6. A clay grab for piling holes with a pulley block according to claim 5, characterised in that: The bearing is a cylindrical needle bearing, the bearing comprises an outer ring, an inner ring and cylindrical needles installed between the outer ring and the inner ring, the pulley body is installed on the outer ring of the bearing, and the inner side of the inner flange abuts against the side of the outer ring of the bearing; a positioning ring is further installed on the hollow shaft, the inner side of the positioning ring abuts against the side of the inner ring of the bearing, and the outer side of the positioning ring abuts against the inner side of the outer flange.

7. A clay grab for piling holes with a pulley block according to claim 5, characterised in that: Nuts are further screwed on the two ends of the hollow shaft, the inner side of the nut abuts against the outer side of the outer flange to lock or loosen the outer flange.

8. A clay grab for piling holes with a pulley block according to claim 7, characterised in that: The hollow shaft is provided with a first annular mounting position for mounting bearings and positioning rings, a second annular mounting position for mounting an outer flange and a third annular mounting position for screwing nuts, the diameter of the first annular mounting position is larger than that of the second annular mounting position, and the diameter of the second annular mounting position is larger than that of the third annular mounting position; the main shaft is respectively provided with a support at two ends, and the support is mounted on a fixed seat or a lifting seat.

9. A clay grab for use with a pile rig as claimed in claim 5, characterised in that: A plurality of positionally opposite pin holes and screw holes are arranged between the pulley body and the inner flange, a positioning pin is arranged in the pin hole, and a positioning bolt is arranged in the screw hole.

10. A clay grab for a piling hole with a pulley block according to claim 5, characterised in that: The inner friction ring and the second sealing ring are in elastic interference fit, the groove wall of the first mounting groove and the second sealing ring are in elastic interference fit, the outer friction ring and the fourth sealing ring are in elastic interference fit, and the groove wall of the second mounting groove and the fourth sealing ring are in elastic interference fit.

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