Tamping hammer for dynamic compaction machine

Abstract

The pounder comprises a plurality of pounder bodies and a plurality of fixing bolts, the pounder bodies can be divided into a lower-layer pounder body, an upper-layer pounder body and counterweight pounder bodies, the counterweight pounder bodies are stacked between the lower-layer pounder body and the upper-layer pounder body, placing grooves are formed in the upper end face of the lower-layer pounder body and the upper end face of the counterweight pounder bodies, and the lower-layer pounder body and the upper end face of the counterweight pounder bodies are connected with the fixing bolts. Two spiral blocks are arranged at the groove bottom of the containing groove and distributed in the circumferential direction of the axis of the corresponding hammer body, the heights of the two spiral blocks are gradually reduced in the same rotating direction, the lower end face of the upper-layer hammer body and the lower end face of the multiple balance weight hammer bodies are each provided with two adaptive blocks, and the two adaptive blocks are distributed in the circumferential direction of the axis of the corresponding hammer body. When the corresponding hammer bodies are matched, the adaptive block is located in the containing groove and moves towards the lowest position of the containing groove, and the fixing bolt penetrates through the upper-layer hammer body and the balance weight hammer bodies and is in threaded connection to the lower-layer hammer body. The rammer weight adjusting device has the effect of reducing the time required for adjusting the weight of the rammer.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of strong rammer, in particular to a rammer for strong rammer. BACKGROUND

[0002] The strong rammer is mainly used for compaction treatment of loose soil, and its working principle is roughly as follows: the hoisting device repeatedly hoists the rammer to a certain height and then releases the rammer, the rammer falls into the soil to form a powerful shock wave and high stress, thereby improving the strength of the foundation, reducing the compressibility, improving the anti-seismic ability, and eliminating the collapsibility. The strong rammer has the advantages of simple structure, short construction period, wide application range, etc., and is widely used in civil buildings, airports, wharfs, highways, artificial islands, etc.

[0003] At present, the Chinese utility model patent with publication number CN201258475Y discloses an adjustable mass strong rammer, which comprises a hammer body and a lifting hook. The hammer body is circular, and a plurality of through air holes are uniformly arranged in the hammer body. The hammer body is composed of a plurality of single-layer rammer bodies, and each single-layer rammer body is connected into a whole by a plurality of large-diameter high-strength bolts. The utility model has the advantages of reducing the cost and trouble of providing multiple mass rammers for multiple-level strong ramming.

[0004] Since the mass of the rammer is large, a plurality of people or even a lifting device needs to be used for vertical quantity adjustment and installation during the assembly of the rammer. In addition, the hammer body is connected by bolts, and it is necessary to accurately align the corresponding bolt positions during installation, so the installation difficulty is large. CONTENT OF THE UTILITY MODEL

[0005] In order to reduce the time required for adjusting the weight of the rammer, the present application provides a rammer for strong rammer.

[0006] The present application provides a rammer for strong rammer, which adopts the following technical scheme:

[0007] A rammer for strong rammer, comprising a plurality of hammer bodies and a plurality of fixing bolts, the hammer bodies can be divided into lower hammer bodies, upper hammer bodies and counterweight hammer bodies, a plurality of the counterweight hammer bodies are stacked between the lower hammer bodies and the upper hammer bodies, the lower hammer bodies and the upper ends of a plurality of the counterweight hammer bodies are both provided with placing grooves, the groove bottoms of the placing grooves are provided with two spiral blocks, the two spiral blocks are distributed circumferentially along the axis of the corresponding hammer body, the heights of the two spiral blocks gradually decrease along the same spiral direction, the lower ends of the upper hammer bodies and a plurality of the counterweight hammer bodies are both provided with two adaptive blocks, the two adaptive blocks are distributed circumferentially along the axis of the corresponding hammer body, when the corresponding hammer bodies are matched, the adaptive blocks are located in the placing grooves and move towards the lowest part of the placing grooves, and the fixing bolts penetrate the upper hammer bodies, a plurality of the counterweight hammer bodies and are threadedly connected to the lower hammer bodies.

[0008] By adopting the technical scheme, when the mass of the rammer needs to be adjusted, the worker can select a corresponding number of counterweight hammer bodies according to the required weight, place the counterweight hammer bodies on the lower hammer bodies first, place the two adapter blocks on the corresponding counterweight hammer bodies in the placement grooves, the two adapter blocks move towards the lowest part of the spiral block under the action of gravity, the two adapter blocks drive the counterweight hammer bodies to rotate relative to the lower hammer bodies, so that the subsequent fixing screw penetrates the counterweight hammer bodies, then the above steps are repeated to complete the placement of the required number of counterweight hammer bodies, then the upper hammer bodies are placed on the counterweight hammer bodies, and finally the fixing bolts are sequentially threaded through the upper hammer bodies, the counterweight hammer bodies and are screwed onto the lower hammer bodies, thereby completing the installation of the rammer. In the process of adjusting the mass of the rammer, the worker does not need to manually align the counterweight hammer bodies, the operation is convenient and fast, and the time for adjusting the mass of the rammer is greatly shortened.

[0009] Optionally, the placement groove is flared.

[0010] By adopting the technical scheme, the placement groove is flared, the counterweight hammer body does not need to be completely aligned with the axis of the lower hammer body, and under the action of gravity, the counterweight hammer body can be guided along the placement groove to be coaxial with the lower hammer body, thereby further improving the adjustment time of the rammer.

[0011] Optionally, the counterweight hammer body is provided with a lifting ring for lifting.

[0012] By adopting the technical scheme, since the counterweight hammer body is heavy, a lifting device is needed to lift it for installation and disassembly of the counterweight hammer body, and the lifting ring facilitates lifting of the counterweight hammer body.

[0013] Optionally, an avoidance groove is formed in the upper end face of the counterweight hammer body, and the lifting ring is located in the avoidance groove and the highest part of the lifting ring is not higher than the upper end face of the counterweight hammer body.

[0014] By adopting the technical scheme, since the counterweight hammer bodies need to abut against each other, the impact of adjacent counterweight hammer bodies during the falling of the rammer is reduced, the lifting ring is located in the avoidance groove, the contact between the lifting ring and the adjacent counterweight block is reduced, and thus the impact force of the lifting ring on the counterweight hammer body during operation is reduced.

[0015] Optionally, air holes are formed in the hammer bodies.

[0016] By adopting the technical scheme, the air holes can reduce the adhesion of the rammer to the ground during ramming, and avoid the formation of negative pressure

[0017] Optionally, the hammer body is provided with a clamping piece abutting against the adjacent counterweight hammer body, the clamping piece comprises a matching block, two clamping blocks and two matching bolts, a matching groove is formed in the side wall of the hammer body, a clamping groove is formed in the groove bottom of the matching groove, the matching block is located in the matching groove, the two clamping blocks are used for clamping in the clamping grooves of the corresponding hammer body and the adjacent hammer body, and the two matching bolts correspond to the two clamping blocks one by one, the matching bolts pass through the matching block and the clamping block in sequence and are threadedly connected to the hammer body.

[0018] By adopting the above technical scheme, the clamping piece is used for connecting the adjacent counterweight hammer bodies, under the action of the spiral block and the matching block in the placing groove, the matching grooves of the adjacent hammer bodies correspond to each other, the staff can directly clamp the matching block in the matching groove, and the two clamping blocks are clamped in the clamping grooves of the corresponding counterweight hammer bodies respectively, and are connected through the matching bolts. In the process of ramming, the clamping piece is used for bearing part of the impact force of the hammer bodies, the fixing bolts are subjected to the interaction force between the multiple hammer bodies, and the service life of the fixing bolts is greatly increased.

[0019] Optionally, a countersunk hole is formed in the matching block, and the head of the matching bolt is located in the countersunk hole.

[0020] By adopting the above technical scheme, since the side wall of the hammer body directly contacts the ground, the head of the matching bolt is easy to be damaged, and the matching bolt cannot be disassembled subsequently. The head of the matching bolt is located in the countersunk hole, the contact of the matching bolt with the ground is reduced, and the service life of the matching bolt is prolonged.

[0021] Optionally, the upper end face of the upper hammer body is fixedly provided with a lifting lug facilitating hoisting by the dynamic compactor.

[0022] By adopting the above technical scheme, the rammer needs to be hoisted by the dynamic compactor to ram the ground, the lifting lug facilitates hoisting of the rammer by the dynamic compactor, and the structure is reasonable.

[0023] In summary, the present application has at least one of the following beneficial technical effects:

[0024] 1. The spiral block in the hammer body placing groove matches the matching block on the adjacent hammer body, so that the upper hammer body rotates under the action of gravity, the fixing bolt is conveniently arranged, and the fixing bolt is not subjected to the interaction force of the adjacent hammer bodies.

[0025] 2. The clamping piece is used for fixing the adjacent hammer bodies, so that the fixing bolt is not subjected to the interaction force of the adjacent hammer bodies when the rammer rams. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a structural schematic view of a rammer for a dynamic compactor.

[0027] Figure 2 isFigure 1 An exploded view is used to show the structure of the lower hammer body.

[0028] Figure 3 yes Figure 2 The bottom view is used to show the structure of the lower end face of the counterweight hammer.

[0029] Figure 4 For display Figure 1 The upper end face structure of the counterweight hammer.

[0030] Figure 5 yes Figure 1 Exploded view of the connector between the Chinese and Western countries.

[0031] Reference numerals in the attached diagram: 1. Lower hammer body; 2. Upper hammer body; 3. Counterweight hammer body; 4. Fixing bolt; 5. Placement slot; 51. Spiral block; 52. Adaptor block; 6. Vent hole; 7. Clearance slot; 71. Lifting ring; 8. Snap-fit ​​part; 81. Mating block; 82. Snap-fit ​​block; 83. Mating bolt; 84. Mating slot; 85. Snap-fit ​​slot; 86. Countersunk hole; 9. Lifting lug. Detailed Implementation

[0032] The following is in conjunction with the appendix Figures 1-5 This application will be described in further detail.

[0033] This application discloses a tamping hammer for a dynamic compaction machine. (Refer to...) Figure 1 and Figure 2 A hammer for a dynamic compaction machine includes several hammer bodies and several fixing bolts 4. The hammer bodies are disc-shaped and are divided into a lower hammer body 1, an upper hammer body 2, and a counterweight hammer body 3. The lower hammer body 1 is horizontally arranged, and several counterweight hammer bodies 3 are stacked on top of the lower hammer body 1. The upper hammer body 2 is arranged on top of the stacked hammer bodies. Several fixing bolts 4 are evenly distributed circumferentially along the axis of the lower hammer body 1. The fixing bolts 4 are vertically arranged, and the tail of the fixing bolt 4 passes through the upper hammer body 2 and the counterweight hammer body 3 in sequence. The tail of the fixing bolt 4 is threadedly connected to the lower hammer body 1. The upper end face of the upper hammer body 2 is fixedly provided with a lifting lug 9 to facilitate the lifting of the dynamic compaction machine.

[0034] Reference Figure 2 and Figure 3The lower hammer body 1 and the counterweight hammer body 3 are both provided with a placement groove 5 on their upper end surfaces. The placement groove 5 is circular and is set in the vertical direction. The diameter of the placement groove 5 gradually decreases along the depth direction of the placement groove 5. Two spiral blocks 51 are fixedly installed in the placement groove 5. The two spiral blocks 51 are semi-circular and are distributed circumferentially along the axis of the placement groove 5. The height of the spiral blocks 51 gradually increases in the clockwise direction. The lower end surfaces of the counterweight hammer body 3 and the upper hammer body 2 are both provided with two adapter blocks 52. The two adapter blocks 52 are evenly distributed circumferentially along the axis of the corresponding placement groove 5. The lower end surface of the adapter block 52 is used to cooperate with the upper end surface of the spiral block 51.

[0035] Reference Figure 2 and Figure 4 The lower hammer body 1 has several ventilation holes 6, which are evenly distributed circumferentially along the axis of the lower hammer body 1. The counterweight hammer body 3 has several ventilation holes 6, which are evenly distributed circumferentially along the axis of the counterweight hammer body 3. The upper hammer body 2 has several ventilation holes 6, which are evenly distributed circumferentially along the axis of the upper hammer body 2. The corresponding ventilation holes 6 on the lower hammer body 1, the upper hammer body, and the counterweight hammer body 3 are interconnected. The upper end face of the counterweight hammer body 3 has two clearance grooves 7, which are evenly distributed circumferentially along the axis of the counterweight hammer body 3. The clearance grooves 7 extend vertically downward. A lifting ring 71 for easy lifting is fixed in the clearance groove 7. The highest point of the lifting ring 71 is not higher than the upper end face of the counterweight hammer body 3.

[0036] Reference Figure 1 and Figure 5 The hammer body is provided with a snap-fit ​​component 8 for maintaining contact with adjacent hammer bodies. The snap-fit ​​component 8 includes a mating block 81, two snap-fit ​​blocks 82, and two mating bolts 83. A mating groove 84 is provided on the side wall of the hammer body. The mating groove 84 extends along the radial direction of the hammer body. The mating grooves 84 of adjacent hammer bodies are interconnected. A snap-fit ​​groove 85 is provided at the bottom of the mating groove 84. The snap-fit ​​groove 85 extends along the radial direction of the hammer body. The mating block 81 is located in the mating groove 84. The two snap-fit ​​blocks 82 correspond to the hammer body and the adjacent hammer body, respectively. The snap-fit ​​blocks 82 are located in the snap-fit ​​groove 85. The two mating bolts 83 correspond one-to-one with the two snap-fit ​​blocks 82. A countersunk hole 86 is provided on the mating block 81. The tail of the mating bolt 83 passes through the mating block 81 and the snap-fit ​​block 82 in sequence. The tail of the mating bolt 83 is threadedly connected to the corresponding hammer body. The head of the mating bolt 83 is located in the countersunk hole 86.

[0037] The implementation principle of a tamping hammer for a dynamic compaction machine according to an embodiment of this application is as follows: When the mass of the tamping hammer needs to be adjusted, the operator can first loosen the fixing bolt 4 and move the upper hammer body 2 away from the counterweight hammer body 3. Adjust the number of counterweight hammer bodies 3 according to the required mass. During the hoisting process, the counterweight hammer body 3 rotates under the action of the spiral block 51 and the adapter block 52, and the counterweight hammer body 3 always remains coaxial with the lower hammer body 1. Under the action of gravity, the adapter block 52 moves towards the lowest point of the spiral block 51 until the counterweight hammer body 3 is aligned with the lower hammer body 1. After the number of counterweight hammer bodies 3 is adjusted, the upper hammer body 2 is hoisted in the above steps. Then, the adjacent hammer bodies are snapped together by the snap-fit ​​parts 8 to ensure that the adjacent hammer bodies are in a state of mutual contact. Finally, the tamping operation can be carried out through the lifting lugs 9 of the upper hammer body 2.

[0038] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A tamping hammer for a dynamic compaction machine, characterized in that: The device includes several hammer bodies and several fixing bolts (4). The hammer bodies can be divided into a lower hammer body (1), an upper hammer body (2), and a counterweight hammer body (3). Several counterweight hammer bodies (3) are stacked between the lower hammer body (1) and the upper hammer body (2). The upper end face of the lower hammer body (1) and several counterweight hammer bodies (3) are provided with a placement groove (5). Two spiral blocks (51) are provided at the bottom of the placement groove (5). The two spiral blocks (51) are distributed circumferentially along the axis of the corresponding hammer body. The height of the rotating block (51) gradually decreases along the same direction of rotation. The lower end face of the upper hammer body (2) and several counterweight hammer bodies (3) are provided with two adapter blocks (52). The two adapter blocks (52) are distributed circumferentially along the axis of the corresponding hammer body. When the corresponding hammer bodies are engaged, the adapter block (52) is located in the placement groove (5) and moves towards the lowest point of the placement groove (5). The fixing bolt (4) passes through the upper hammer body (2) and several counterweight hammer bodies (3) and is threadedly connected to the lower hammer body (1).

2. The tamping hammer for a dynamic compaction machine according to claim 1, characterized in that: The placement slot (5) is flared.

3. The tamping hammer for a dynamic compaction machine according to claim 1, characterized in that: The counterweight hammer (3) is equipped with a lifting ring (71) for easy hoisting.

4. A tamping hammer for a dynamic compaction machine according to claim 3, characterized in that: The upper end face of the counterweight hammer (3) is provided with a relief groove (7), and the lifting ring (71) is located in the relief groove (7) and the highest point of the lifting ring (71) is not higher than the upper end face of the counterweight hammer (3).

5. A tamping hammer for a dynamic compaction machine according to claim 1, characterized in that: Ventilation holes (6) are provided on all hammer bodies.

6. A tamping hammer for a dynamic compaction machine according to claim 1, characterized in that: The hammer body is provided with a snap-fit ​​component (8) for maintaining contact with adjacent hammer bodies. The snap-fit ​​component (8) includes a mating block (81), two snap-fit ​​blocks (82), and two mating bolts (83). A mating groove (84) is provided on the side wall of the hammer body. A snap-fit ​​groove (85) is provided at the bottom of the mating groove (84). The mating block (81) is located in the mating groove (84). The two snap-fit ​​blocks (82) are used to snap into the snap-fit ​​grooves (85) of the corresponding hammer body and the adjacent hammer body. The two mating bolts (83) correspond one-to-one with the two snap-fit ​​blocks (82). The mating bolts (83) pass through the mating block (81) and the snap-fit ​​block (82) in sequence and are threaded onto the hammer body.

7. A tamping hammer for a dynamic compaction machine according to claim 6, characterized in that: The mating block (81) has a countersunk hole (86), and the head of the mating bolt (83) is located in the countersunk hole (86).

8. A tamping hammer for a dynamic compaction machine according to claim 1, characterized in that: The upper end face of the upper hammer (2) is fixedly provided with a lifting lug (9) to facilitate the lifting of the dynamic compaction machine.

Images