CN201010895Y

CN201010895Y - Pneumatic tamping machine

Info

Publication number: CN201010895Y
Application number: CNU200720067552XU
Authority: CN
Inventors: 余德昌
Original assignee: SHANGHAI PNEUMATIC TOOL PLANT
Current assignee: SHANGHAI PNEUMATIC TOOL PLANT
Priority date: 2007-03-01
Filing date: 2007-03-01
Publication date: 2008-01-23
Anticipated expiration: 2017-03-01

Abstract

The utility model discloses a pneumatic rammer, which comprises an air inlet switch component and an impacting component; wherein the air inlet switch component consists of a gas connecting pipe. The pneumatic rammer also consists of a jointing gas pipe and a lower gas pipe; wherein the jointing gas pipe communicates the gas connecting pipe; the lower gas pipe is sleeved with the gas connecting pipe; the impacting component also consists of a cylinder component and a piston bar component; wherein the cylinder component is connected with the gas connecting pipe; and the piston bar component is connected with the lower gas pipe; the upper of the piston bar component has a valve, a lower gas inlet channel and an upper gas inlet channel; wherein the lower gas inlet channel and the upper gas inlet channel are communicated with the lower gas pipe; and the valve can alternately open the upper gas inlet channel and close the lower gas inlet channel or open the lower gas inlet channel and close the upper gas inlet channel at the same time. The pneumatic rammer also consists of a shell cover and a vibration retarding handle component which is positioned between the air inlet switch component and the impacting component; wherein the vibration retarding handle component comprises a spring sleeved on the gas connecting pipe; and the inner wall of the shell cover has a step which prevents the spring from moving upwardly and downwardly. The utility model is small in vibration, convenient to be manufactured and processed and is applicable to tamp and found a sand model and concrete sand groundwork.

Description

Pneumatic tamping tool

Technical field

The utility model relates to a kind of pneumatic tool of making usefulness such as casting sand mo(u)ld and compacting coagulation sand foundation firm by ramming, relates in particular to a kind of pneumatic tamping tool.

Background technology

Pneumatic tamping tool can produce the bounce phenomenon when impacting operation, and the vibration ratio of this bounce is higher.And the pneumatic tamping tool of being sold in the market hold parts and impact part directly links together, make that this vibration is easy to pass to human body by holding parts.Under the environment of this dither frequency, work for a long time, can produce very big influence health of operators.Thereby, press for a kind of pneumatic tamping tool that can reduce or eliminate the vibration sense.In addition, the component processing required precision of existing pneumatic tamping tool is very high, especially operating valve and cylinder body, and inlet channel is provided in a side of on the cylinder body, makes troubles for the processing and manufacturing of pneumatic tamping tool.

Summary of the invention

Technical problem to be solved in the utility model is to provide a kind of pneumatic tamping tool little, convenient processing and manufacture that vibrates.

The technical solution of the utility model is, a kind of pneumatic tamping tool comprises air inlet switch block, impact part, and the air inlet switch block comprises trachea, shift bar body, and impact part comprises compactor, wherein:

This pneumatic tamping tool also comprises the connection tracheae that is connected with trachea and is inserted in the endotracheal tracheae down of this connection;

Above-mentioned impact part also comprises housing assembly and piston rod assembly; Housing assembly is connected with the connection tracheae, is provided with steam vent on housing assembly; Piston rod assembly is connected with following tracheae, and the lower end of piston rod assembly is connected with compactor, the upper end of piston rod assembly be provided with valve and be connected with following tracheae on inlet channel and following inlet channel; Described valve can alternately carry out the last inlet channel of unlatching and cut out down inlet channel, opens following inlet channel and cut out inlet channel;

This pneumatic tamping tool comprises that also valve jacket and the vibration damping between air inlet switch block and impact part hold parts; This vibration damping is held parts and is comprised the spring that is enclosed within on the connection tracheae external diameter; The inwall of valve jacket is provided with the ring-shaped step that stops that spring moves up and down.

Above-mentioned pneumatic tamping tool, wherein: described valve pocket has the gap between the external diameter of valve and following tracheae on the external diameter of the lower end of following tracheae, the tube wall of the lower end of following tracheae is provided with pore; Described piston rod assembly comprises piston rod and piston valve, and piston rod is made of bar head and shaft, and the lower end of piston valve is socketed on the external diameter of bar head; Last inlet channel comprises on the end face of the upper end of being located at the last inner chamber in the piston valve and being located at piston valve and the venthole that communicates with last inner chamber; Following inlet channel comprises to be located at the lower inner cavity in the piston valve and to be located on the bar head and the through hole that communicates with lower inner cavity.

Above-mentioned pneumatic tamping tool, wherein: described pneumatic tamping tool also comprises tracheae, tracheae copper sheathing and tracheae and cap; Connecting the upper end of tracheae and the internal diameter of tracheae copper sheathing spins; Tracheae and cap are arranged on the inwall of shift bar body; Be inserted in the tracheae copper sheathing lower end of last tracheae, and the upper end of last tracheae spins with the shift bar body after being inserted in tracheae and cap.

Above-mentioned pneumatic tamping tool, wherein: described housing assembly comprises cylinder body and cylinder block.

Above-mentioned pneumatic tamping tool, wherein: the quantity of described ring-shaped step is one; Described spring comprises the big spring of being located at the ring-shaped step top and the little spring of being located at the ring-shaped step below; The upper surface of described housing assembly has groove, and the lower end of little spring is placed in the groove; Described vibration damping is held part and is also comprised the spring lasso that is enclosed within on the described connection tracheae; The upper end of little spring is placed in the spring lasso, and the two ends of big spring respectively are enclosed within the spring lasso.

The beneficial effects of the utility model are:

1. air inlet pipe of the present utility model has adopted the mode of soft connection, and whole air inlet pipe parts are linked together by last tracheae, connection tracheae and following tracheae segmentation, and wherein, the lower end of following tracheae is connected with piston rod assembly, and its upper end directly is inserted in and connects in the tracheae; Simultaneously, hold parts at vibration damping and adopted spring mechanical buffer structure and compressed air air cushion buffering, the vibration of pneumatic tamping tool is greatly reduced, eliminated health effects.

2. adopt the mode of cylinder body and cylinder block bulk-breaking combination, and inlet channel has been arranged on the piston rod assembly, reduced the complexity of part processing, made the part work in-process be convenient to control accuracy, made things convenient for manufacturing.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 carries out the work schematic diagram of down stroke motion for impact part of the present utility model;

Fig. 3 carries out the work schematic diagram of upstroke motion for impact part of the present utility model;

Fig. 4 is the structural representation of piston valve of the present utility model;

Fig. 5 is the lateral view of Fig. 4;

Fig. 6 is the structural representation of valve of the present utility model;

Fig. 7 is the lateral view of Fig. 6.

The specific embodiment

The utility model will be further described below in conjunction with accompanying drawing.

Pneumatic tamping tool of the present utility model comprises that valve jacket, air inlet pipe parts, air inlet switch block, vibration damping hold parts and impact part.As shown in Figure 1, the air inlet switch block comprises trachea 11, shift bar body 12, switch 13, needle roller 14, steel ball 15, stub (tube) 16 and spring 17.Compressed air is provided with an air inlet port 18 from the inner chamber of trachea 11 insertion switch handle bodies 12 in this inner chamber, steel ball 15 is arranged on air inlet port 18 places, and is connected with spring 17, and the size of steel ball guarantees that it can seal air inlet port 18.By pressing down the motion of controlling steel ball 15 with reset switch 13, can realize the unlatching and the sealing of air inlet port 18.On the inwall of the lower end of shift bar body 12, also be provided with a tracheae and cap 19.The air inlet pipe parts comprise tracheae 41, connect tracheae 42, tracheae copper sheathing 43 and following tracheae 44.Wherein, after the upper end of last tracheae 41 cover inserted tracheae and cap 19, the internal thread by on shift bar body 12 inwalls was screwed in shift bar body 12, made the compressed air that flows in shift bar body 12 inner chambers can flow to tracheae 41.Be inserted in tracheae copper sheathing 43 lower end of last tracheae 41, and the internal diameter of tracheae copper sheathing 43 spins with the external diameter of the upper end that connects tracheae 42, and the upper end of following tracheae 44 is inserted in and connects in the tracheae 42.Impact part comprises compactor 31, regulates nut 33, gland 34, sealing mat 35, guide pin bushing 36, housing assembly 37 and piston rod assembly 38.Housing assembly 37 comprises cylinder body 371 and cylinder block 372, and cylinder body 371 and cylinder block 372 closely cooperate mutually, are fixed together by pin 373.Like this, it is extremely simple that the shape of cylinder body 371 becomes, and is convenient to its processing and improves machining accuracy.On cylinder body 371, be provided with steam vent 371a.The internal diameter of cylinder block 372 spins with the external diameter of the lower end that connects tracheae 42, and locks with lock-screw 372a.Piston rod assembly 38 comprises piston rod 38G and piston valve 382, and piston rod 38G is made of bar head 381 and shaft 388, and the lower end of shaft 388 and compactor 31 link together.The bar head 381 of the internal diameter of the lower end of piston valve 382 and piston rod 38G spins.Have tapped blind hole on the upper surface of bar head 381, the lower end of following tracheae 44 is stretched in this blind hole and is spun with bar head 381.Be provided with a plurality of air inlet/outlet 381a on bar head 381, air inlet/outlet 381a is a through hole.On piston valve 382, be provided with the lower inner cavity 382a and the last inner chamber 382b of annular, on the upper surface of piston valve 382, be provided with a plurality of venthole 382c.Lower inner cavity 382a and air inlet/outlet 381a communicate, and last inner chamber 382b communicates with venthole 382c.In piston valve 382, also be provided with a valve 383, valve 383 has two kinds of duties, a kind of is to close lower inner cavity 382a and open upward inner chamber 382b, and another kind is to close to close inner chamber 382b and open lower inner cavity 382a, and valve 383 can be changed between these two kinds of duties.Valve 383 is enclosed within down on the tracheae 44, and has certain clearance between the following tracheae 44; Have two pore 44a on the tube wall of following tracheae 44, like this, the compressed air in the following tracheae 44 can enter gap between valve 383 and the following tracheae 44 by these two pores, again inner chamber 382b or lower inner cavity 382a from this gap inflow.Fig. 4 and Fig. 5 are respectively the front schematic view and the lateral views of piston valve 382, and Fig. 6 and Fig. 7 are respectively the front schematic view and the lateral views of valve 383.Vibration damping hold parts comprise connecting tube 21, at big spring 28 that is inserted on the external diameter of the epimere that connects tracheae 42 and upper spring lasso 27, connecting the little spring 24 and the lower spring lasso 25 that are inserted on the external diameter of hypomere of tracheae 42.Connecting tube 21 is screwed in valve jacket 60.There is certain clearance between the outer wall of the inwall of valve jacket 60 and housing assembly 37, between the inwall of the outer wall of the upper end of housing assembly 37 and valve jacket 60, a cavity 70 arranged.Be provided with one on the inwall of valve jacket 60 between big spring 28 and little spring 24, to projecting inward ring-shaped step 601.The two ends of big spring 28 respectively are with a upper spring lasso 27, and the spring lasso can play the effect of fixed bearing spring.Upper surface at cylinder block 372 has groove, is used to put the lower end of little spring 24, and the upper end of little spring 24 is enclosed within the lower spring lasso 25.Upper spring lasso 27 and lower spring lasso 25 are all made with ferrous materials.

Below the course of work of pneumatic tamping tool of the present utility model is done a description.

Pneumatic tamping tool of the present utility model with air pressure be the compressed air of 0.4～0.63MPa as power source, compressed air enters the inner chamber of shift bar body 12 by trachea 11.When using pneumatic tamping tool, depress switch 13, switch 13 is nip drum pin 14 inwards, and needle roller 14 is pushed open steel ball 15 from air inlet port 18, and compressed air enters by in tracheae and cap 19 and tight the last tracheae 41 from air inlet port 18, enters down tracheae 44 by connection tracheae 42.At initial time, the upper surface of bar head 381 is close in the lower surface of valve 383, and the lower inner cavity 382a of piston valve 382 is closed in the bottom of valve 383, therefore, pore 44a under compressed air can only pass through on the tracheae 44, gap between the external diameter of valve 383 and following tracheae 44 flows to the last inner chamber 382b of piston valve 382, flow to the epicoele 37b of the housing assembly 37 of piston valve 382 tops again from the venthole 382c of piston valve 382, and then promote piston valve 382 and piston rod 38G carries out the down stroke motion together downwards, drive compactor 31 and impact downwards, as shown in Figure 2.When piston valve 382 moves to steam vent 371a on the housing assembly 37 when following, the compressed air in the epicoele 37b of housing assembly 37 is discharged by steam vent 371a, makes that the air pressure in the epicoele 37b reduces.Simultaneously, because the cavity of resorption 37a of housing assembly 37 is conditioned nut 33, gland 34, sealing mat 35 and guide pin bushing 36 and seals fully, air in the cavity of resorption 37a of the housing assembly 37 of bar head 381 belows is compressed and the pressure increase that becomes, so the air of 37a flows into the lower inner cavity 382a of piston valve 382 in the cavity of resorption by the air inlet/outlet 381a of bar head 381, and then promote valve 383 and move up and be close to the upper surface of the last inner chamber 382b of piston valve until the upper surface of valve 383, the last inner chamber 382b of piston valve is closed, opened the lower inner cavity 382a of piston valve simultaneously.At this moment descend compressed air in the tracheae 44 pore 44a by tracheae 44 down and the lower inner cavity 382a of the gap inflow piston valve 382 between the external diameter of valve 383 and following tracheae 44, flow to the cavity of resorption 37a of housing assembly 37 again through the air inlet/outlet 381a of bar head 381, promoting piston rod 38G and piston valve 382 moves up together, carry out the upstroke motion, as shown in Figure 3.When bar head 381 moved on the steam vent 371a on the housing assembly, the compressed air in the cavity of resorption 37a of housing assembly 37 was discharged by steam vent 371a, made that the air pressure in the cavity of resorption 37a reduces.Simultaneously, owing to move on bar head and the piston valve, make the interior air pressure of epicoele 37b of housing assembly increase, add on a small quantity from the compressed air of the gap inflow between the external diameter of gap between the endoporus of cylinder block 372 and following tracheae 44 external diameters and time tracheae 44 and the endoporus that connects tracheae 42, make the pressure of epicoele 37b of housing assembly further increase, so, air in the epicoele 37b promotes valve 383 and moves down until the upper surface of being close to bar head 381 by the last inner chamber 382b that the venthole 382c of piston valve 382 enters piston valve 382.Then, carry out above-mentioned down stroke motion again, so repeatedly, pneumatic tamping tool carries out tamping operation.

In the course of work of pneumatic tamping tool,, therefore can produce vibration because meetings such as housing assembly, piston rod produce knock-on power and whereabouts action of gravity.In order to solve vibration to holding the influence of parts, air inlet pipe parts of the present utility model have adopted the mode of soft connection, be that whole air inlet pipe parts are linked together by last tracheae, connection tracheae and following tracheae segmentation, the lower end of following tracheae is connected with piston rod assembly, its upper end directly is inserted in and connects in the tracheae, and the lower end of connection tracheae and the internal diameter of cylinder block spin.On the upper and lower two sections external diameter that connects tracheae, respectively be inserted in upper spring lasso, big spring and lower spring lasso, little spring.Like this, piston rod assembly carries out the vibration that the down stroke motion is produced, and makes the lower spring lasso impinge upon the lower surface of the ring-shaped step on the valve jacket under the effect of little spring, obtains buffering; And piston rod assembly carries out the vibration that the upstroke motion is produced, because compactor is liftoff, housing assembly and piston rod assembly fall together, make the upper spring lasso impinge upon the upper surface of the ring-shaped step on the valve jacket under the effect of big spring, have also realized buffering; Thereby cushioning effect has been played in the vibration that whole motion process produced.On the other hand, when piston rod, piston valve move up and down in housing assembly, compressed air from the discharge of housing assembly steam vent, the gap between the outer wall of inwall by valve jacket and housing assembly constantly, flow into the cavity (cavity 70 among Fig. 1) between the inwall of the upper end of housing assembly and valve jacket, make to remain certain compressed air in this cavity.In addition, the inner chamber in connecting tube also has certain compressed air.Because these compressed-air actuated effects can produce certain positice ground effect to the upper end face of housing assembly and the rear surface of the upper spring lasso that is positioned at the below, so again housing assembly reaction force have at work been played buffering, thereby have reduced vibration.The vibration damping of complete machine is realized by above frame for movement and compression pneumatic cushion.

Though description of the present utility model combines certain embodiments, but it should be understood by one skilled in the art that the utility model is not limited to embodiment described here, and can carry out various modifications and variations and do not deviate from spirit and scope of the present utility model.

Claims

1. a pneumatic tamping tool comprises air inlet switch block, impact part, and described air inlet switch block comprises trachea, shift bar body, and described impact part comprises compactor, it is characterized in that:

Described pneumatic tamping tool also comprises the connection tracheae that is connected with described trachea and is inserted in the endotracheal tracheae down of described connection;

Described impact part also comprises housing assembly and piston rod assembly; Described housing assembly is connected with described connection tracheae, is provided with steam vent on described housing assembly; Described piston rod assembly is connected with described down tracheae, and the lower end of piston rod assembly is connected with described compactor, the upper end of piston rod assembly be provided with valve and with described under tracheae be connected on inlet channel and following inlet channel; Described valve can alternately carry out the last inlet channel of unlatching and cut out down inlet channel, opens following inlet channel and cut out inlet channel;

Described pneumatic tamping tool comprises that also valve jacket and the vibration damping between described air inlet switch block and described impact part hold parts; Described vibration damping is held parts and is comprised the spring that is enclosed within on the described connection tracheae external diameter; The inwall of described valve jacket is provided with the step that stops that described spring moves up and down.

2. pneumatic tamping tool as claimed in claim 1 is characterized in that:

Described valve pocket has the gap between the external diameter of described valve and described tracheae down on the external diameter of the described lower end of tracheae down, the described tube wall of the lower end of tracheae down is provided with pore;

Described piston rod assembly comprises piston rod and piston valve, and described piston rod is made of bar head and shaft, and the lower end of described piston valve is socketed on the external diameter of described bar head;

Describedly go up on the end face that inlet channel comprises the upper end of being located at the last inner chamber in the described piston valve and being located at piston valve and the venthole that communicates with described last inner chamber;

Described inlet channel down comprises to be located at the lower inner cavity in the described piston valve and to be located on the described bar head and the through hole that communicates with described lower inner cavity.

3. pneumatic tamping tool as claimed in claim 1 or 2 is characterized in that: described pneumatic tamping tool also comprises tracheae, tracheae copper sheathing and tracheae and cap; The internal diameter of the upper end of described connection tracheae and described tracheae copper sheathing spins; Described tracheae and cap are arranged on the inwall of described shift bar body; Be inserted in the described tracheae copper sheathing described lower end of going up tracheae, spins with described shift bar body after described tracheae and cap are inserted in described upper end of going up tracheae.

4. pneumatic tamping tool as claimed in claim 1 is characterized in that: described housing assembly comprises cylinder body and cylinder block.

5. pneumatic tamping tool as claimed in claim 4 is characterized in that: the internal diameter of described cylinder block with connect tracheae and spin.

6. pneumatic tamping tool as claimed in claim 1 is characterized in that:

The quantity of described step is one;

Described spring comprises the big spring of being located at described ring-shaped step top and the little spring of being located at described ring-shaped step below;

The upper surface of described housing assembly has groove, and the lower end of described little spring is placed in the described groove;

Described vibration damping is held part and is also comprised the spring lasso that is enclosed within on the described connection tracheae;

The upper end of described little spring is placed in the spring lasso, and the two ends of described big spring respectively are enclosed within the spring lasso.

7. pneumatic tamping tool as claimed in claim 1 is characterized in that: leave the gap between the inwall of described valve jacket and the outer wall of described housing assembly.

8. pneumatic tamping tool as claimed in claim 2 is characterized in that: the compressed air that enters described down tracheae is gone up the top that inlet channel enters described piston valve by described, promotes described piston rod assembly and carries out the down stroke motion; When described piston valve moved to the below of steam vent of described housing assembly, the compressed air that enters described tracheae down entered the below of described bar head by described inlet channel down, promotes described piston rod assembly and carries out the upstroke motion.

9. pneumatic tamping tool as claimed in claim 2 is characterized in that, described tracheae down and described bar head spin.