CN2876182Y

CN2876182Y - Bottom expanding equipment

Info

Publication number: CN2876182Y
Application number: CN 200520093877
Authority: CN
Inventors: 王国奋
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-11-28
Filing date: 2005-11-28
Publication date: 2007-03-07
Anticipated expiration: 2015-11-28

Abstract

The utility model discloses a bottom stake expansion device for fundamental construction, and especially relates to an expansion device for sinking-tube pre-cast concrete expansion stakes. The utility model consists of a frame, which can be positioned through the sinking tube, a power source, a transmission device connected with the power source and a cutting blade bracket, which can be opened and closed through the transmission device. In comparison with present technologies, an upper horizontal positioning pin and a lower positioning iron foot are arranged on the utility model. Lower part of the upper part of the bolt on the middle shaft is a square and is fitted with the upper shaft sleeve and the lower shaft sleeve. The middle shaft is lowered to excavate vertically, hoisted to expand the bottom and excavate, and reversely rotated to crushing the excavated earth. The utility model is featured with a high positioning accuracy, a guaranteed eccentricity between the stake and the bottom-stake expansion seat and obviously improved single-stake loading capacity. The bottom-stake expansion seat meets standard requirements, operation is simple, the machine is easier to control, and the fundamental construction cost is reduced. Bottom stake expansion and earth crushing are carried out simultaneously to improve efficiency and quality of fundamental construction.

Description

Bottom-expanding equipment

Technical field

The utility model relates to a kind of bottom-expanding equipment, and particularly a kind of foundation construction expanded bore pile equipment is that pipe sinking prefabricated steel concrete club-footed pile expands the preferred unit of cutting the earth and pulverizing the soil body in the end.

Background technology

Fast development along with builing industry, the high buildings and large mansions of each big and medium-sized cities stand in great numbers and are seen everywhere, high-rise building requires also increasing to its basic supporting capacity, often adopt expanded bore pile with the distribution density that reduces foundation pile with reduce cost in order to increase single pile bearing capacity, expand end shoveling equipment arises at the historic moment thereupon, yet however, shoveling equipment all is not suitable for the shoveling needs that immersed tube prefabricated steel concrete expands the end at the bottom of the expansion in the past, because equipment is not to be positioned on the immersed tube, but be placed on the soil body of bottom, its poor accuracy, effect and control ability are low, are subjected to certain limitation so it is applied.

The utility model content

The utility model provides a kind of positional accuracy good at the problem of above-mentioned prior art existence, control well, and single pile bearing capacity is strong, the bottom-expanding equipment that reduces a stake distribution density, reduces cost and be suitable for pipe sinking prefabricated steel concrete club-footed pile expansion end shoveling and pulverize soil.

The utility model realizes that the purpose technical scheme is: a kind of bottom-expanding equipment, it can open and the cutter saddle of gathering is formed by driving with the frame of immersed tube location, power source, the transmission mechanism that is connected with power source, by transmission mechanism.

Described transmission mechanism comprises that an end links to each other with power source, the power rail that the other end links to each other with Upper shaft sleeve, the gear that is installed in the Upper shaft sleeve bottom is meshed with the pinion of being located at the gear shaft upper end, the pinion of this lower end is meshed with gear on the axis, the lower end of axis is passed frame, lower fixed disk, knife rest cross bar successively and is linked to each other with the upper end of vertical cut cutter, its cross section is circular upper part and square lower part or scarce limit circle, Lower shaft sleeve is set on the axis, and the lower end is passed the frame lower fixed disk and fixedlyed connected with the knife rest cross bar.

Described knife rest comprises the knife rest cross bar of fixedlying connected with Lower shaft sleeve the top, and its two ends are hinged with an end that expands the undercutting sharpener, and an end of support link is hinged with the middle part of expanding the undercutting sharpener, and the other end is hinged on the both sides on vertical cut cutter top.

Described axis epimere is a screw rod, and the projection by the both sides, upper end puts in the corresponding slideway in the Upper shaft sleeve, and the hypomere cross section is square and matches with its outer Lower shaft sleeve of suit.

Described axis is provided with defining flange on the position of the following certain distance of knife rest cross bar.

The upper and lower side of described frame is a fixed disk, by fusing each other along circumferential uniform column, also is provided with two reinforcement fixed heads therebetween at least between the two.

Described going up in the fixed disk along circumferentially uniform is provided with the horizontal location pin that three afterbodys have spring at least.

In the described lower fixed disk both sides be arranged with immersed tube in the alignment pin that is complementary of locating slot, the inner of its pin is provided with spring, on spacer pin is arranged, the outer end is provided with the iron pin on band inclined-plane, top; Lower fixed disk is inherent to be vertical centre with alignment pin and radially to be provided with the horizontal pin that can put in the sipes on the Lower shaft sleeve perisporium, and afterbody has spring with screw, and is provided with the handle of pulling out horizontal pin on horizontal pin.

Pyramidal metal closures of round platform of the upper end suit of described Upper shaft sleeve, place on the centre of fixed disk, the bottom is provided with support spring, and the lower end of Upper shaft sleeve is provided with rolling bearing, and the projection that its interior axially both sides are provided with slideway and both sides, axis upper end is complementary.

The utility model compared with prior art, because adopted last horizontal location pin, down detent rail pin, axis epimere screw rod hypomere are squarely to cooperate with last Lower shaft sleeve is organic respectively, axis descends and vertically cuts the earth, and cut the earth in the expansion end of rising, a series of technical measures such as hack of reversing, and it is good through the evidence positional accuracy, guarantee pile body and expanded bore pile base good concentricity, obviously improve single pile bearing capacity, expanded bore pile seat shape meets standard-required, easy control easy and simple to handle reduces the Foundation Design cost; Expand simultaneously to cut the earth in the end and pulverize the soil body and finish simultaneously, raise the efficiency and the Foundation Design quality.The utility model bottom-expanding equipment compact conformation, can be used with immersed tube, automatic and mechanical degree height, it is good to expand the substrate amount, the precision height, work progress is safe and reliable, and is simple to operation, and the controlled ability of equipment is strong, soil body good crushing effect.

Below in conjunction with the drawings and specific embodiments the utility model is described in further details.

Description of drawings

Fig. 1 is a main TV structure schematic diagram of the present utility model.

Fig. 2 is the A-A sectional structure schematic diagram of Fig. 1.

Fig. 3 is the B-B sectional structure schematic diagram of Fig. 1.

Fig. 4 is the partial enlarged drawing of axis, last lower shaft, gear drive part.

Among the figure 2, the iron pin; 3, alignment pin; 4, overcoat; 5, draw-in groove; 6, column; 7, gear shaft; 8, gear; 9, pinion; 11, metal closures; 12, gear; 13, pinion; 14, Upper shaft sleeve; 15, spring; 17, power rail; 18, horizontal location pin; 19, go up fixed disk; 21, Lower shaft sleeve; 22, support link; 23, axis; 24, vertical cut cutter; 25, expand the undercutting sharpener; 27, spring; 29, horizontal pin; 30, spring; 31, screw; 32, spacer pin; 33, lower fixed disk; 34, spring; 41,42, strengthen fixed head; 50, knife rest cross bar; 52, defining flange.

The specific embodiment

Embodiment of the present utility model is described in detail in conjunction with the accompanying drawings, but protection domain of the present utility model is not limit by embodiment.

Embodiment one: as shown in Figure 1 be main TV structure schematic diagram of the present utility model.The last fixed disk 19 of frame and lower fixed disk 33, between the two by it being fused along circumferentially uniform four or two or eight or more root posts 6, top, the middle part also is provided with two reinforcement fixed heads 41,42, be the upper end that the pyramidal metal closures 11 of round platform is set in Upper shaft sleeve 14, and place the center of fixed disk 19, bottom is provided with passive spring 15, the power rail 17 that the upper end of Upper shaft sleeve 14 links to each other with power source links to each other, the lower end of Upper shaft sleeve 14 places on the lower plywood of strengthening fixed head 41, its outer rolling bearing that is provided with, gear 12 is installed in the bottom of Upper shaft sleeve, the upper end of axis 23 puts in the Upper shaft sleeve 14 and the projection on both sides, upper end is entered in the corresponding slideway of Upper shaft sleeve, the upper semisection of axis 23 is a screw rod, the lower semisection cross section is a square or scarce limit circle, Lower shaft sleeve 21 is sleeved on the Lower Half of axis 23, overcoat 4 is sleeved on Lower shaft sleeve 21 outsides, the lower end of axis 23 is passed the lower fixed disk 33 of frame in turn, knife rest cross bar 50 links to each other with vertical cut cutter 24 upper ends, the lower fixed disk 33 that frame is passed in the lower end of Lower shaft sleeve 21 is fixedlyed connected with knife rest cross bar 50, the two ends of knife rest cross bar 50 are hinged with an end that expands undercutting sharpener 25, one end of support link 22 is hinged with the middle part of expanding undercutting sharpener 25, and the both sides, top of the other end and vertical cut cutter 24 are hinged; The described gear 12 that is installed in Upper shaft sleeve 14 bottoms is meshed with the pinion 9 of gear shaft 7 upper ends, and the pinion 13 of coaxial lower end is meshed with internal thread gear 8 on the axis 23; The described fixed disk 19 interior edges of going up circumferentially are laid with four horizontal location pins 18, and the outer end is exposed the side face tail end and is provided with spring 34; The both sides of described lower fixed disk 33 are arranged with the alignment pin 3 that can be complementary with immersed tube bottom locating slot, and the inner of its pin is provided with spring 27, on spacer pin 32 is arranged, the outer end is provided with the iron pin 2 on band inclined-plane, top.And radially being provided with the horizontal pin 29 that can put in the draw-in groove 5 wide on Lower shaft sleeve 21 perisporiums being vertical central part with it, afterbody has spring 30 with screw 31 location, also is provided with the handle that it is pulled out on the horizontal pin 29.Described axis 23 is provided with defining flange 52 in knife rest cross bar 50 bottoms.The power source of the utility model equipment is the motor that can change anyway.

When equipment of the present utility model uses, power rail 17 is mentioned, equipment is aimed at the immersed tube mouth, and the mark that iron pin 2 is aimed on the immersed tube mouth, this mark is to aim at the immersed tube locating slot at bottom, afterwards equipment is put into immersed tube, this moment, spring 27 was compressed, and iron pin 2 presses closer the immersed tube inwall and slides downwards, directly enters the channel opening place, slip in the groove, iron pin 2 is positioned fixing.This moment, its total weight was depressed metal closures 11, and four horizontal location pins 18 are pushed outwards to be gone out, and presses closer the immersed tube inwall, and the equipment upper end is also fixedly positioning.When the power rail 17 of machining this moment turns clockwise, gear 8 puts in axis 23 downwards, vertical cut cutter 24 clockwise rotates vertically thereupon the bottom pan soil is reamed, and stops automatically after dark when reaching mark, and this moment, horizontal pin 29 stretched in the draw-in groove 5 on Lower shaft sleeve 21 perisporiums; Power rail 17 rotates counterclockwise, axis 23 begins to promote, support link 22 with outside open when will expand undercutting sharpener 25 and get out pan soil reamed, reach the design base diameter, be after power rail 17 reaches the regulation rotating speed, expand end shoveling and finish that the defining flange 52 of axis 23 lower ends contacts with knife rest cross bar 50 and stops to open at this moment, power rail 17 is rotated further a few, because the draw-in groove 5 on the Lower shaft sleeve 21 has suitable width, after a bit of distance of whole knife rest vertical-lift, stop after promptly arriving the regulation revolution, then power rail 17 counter-rotatings, the knife rest rotation is drawn in, and its gathering process is pulverized the soil body, certainly does so repeatedly, enough pulverized until the soil body, after action was finished, power rail 17 promoted, and horizontal location pin 18 moves to the center, the upper end constraint relief, iron pin 2 skids off in groove, and equipment is hung out ground, with handle horizontal pin 29 is pulled out draw-in groove 5, knife rest recovers the original shape that draws in, prepares to cut the earth next time.

Embodiment two: embodiment one described transmission mechanism also can adopt following structure: comprise that an end links to each other with power source, the power rail that the other end links to each other with Upper shaft sleeve 14, the gear 12 that is installed in Upper shaft sleeve 14 bottoms is meshed with the pinion 9 of being located at gear shaft 7 upper ends, the pinion 13 of this lower end is meshed with gear 8 on the axis 23, the lower end of axis 23 is passed frame successively, lower fixed disk 33, knife rest cross bar 50 links to each other with the upper end of vertical cut cutter 24, its cross section is circular upper part and square lower part or scarce limit circle, knife rest cross bar 50 is sleeved on the axis 23, and Lower shaft sleeve 21 is fixedlyed connected with knife rest cross bar 50.Just drive knife rest cross bar 50 with axis 23, knife rest cross bar 50 is driving Lower shaft sleeve 21.Other structure is with embodiment one.

Embodiment three: the gear shaft 7 described in the embodiment one, gear 8, gear 12 and pinion 13 can be substituted by a fixing gear 8, and gear 8 is threaded other structure with embodiment one with axis.

Transmission mechanism of the present utility model can be used with the frame of other bottom-expanding equipment, and frame of the present utility model also can be used with the transmission mechanism of other bottom-expanding equipment.

Claims

1, a kind of bottom-expanding equipment, it is characterized in that it is made of following structure: power source is connected with transmission mechanism, is connected with the top of transmission mechanism with the frame of immersed tube location, and cutter saddle is arranged on the transmission mechanism bottom and is connected with transmission mechanism.

2, bottom-expanding equipment according to claim 1, it is characterized in that described transmission mechanism comprises that an end links to each other with power source, the power rail that the other end links to each other with Upper shaft sleeve (14), the gear (12) that is installed in Upper shaft sleeve (14) bottom is meshed with the pinion (9) of being located at gear shaft (7) upper end, the pinion of this lower end (13) is meshed with gear (8) on the axis (23), the lower end of axis (23) is passed frame successively, lower fixed disk (33), knife rest cross bar (50) links to each other with the upper end of vertical cut cutter (24), its cross section is circular upper part and square lower part or scarce limit circle, Lower shaft sleeve (21) is set on the axis (23), and the lower end is passed frame lower fixed disk (33) and fixedlyed connected with knife rest cross bar (50).

3, bottom-expanding equipment according to claim 1, it is characterized in that described cutter saddle comprises the knife rest cross bar of fixedlying connected with Lower shaft sleeve (21) in the top (50), its two ends are hinged with an end that expands undercutting sharpener (25), one end of support link (22) is hinged with the middle part of expanding undercutting sharpener (25), and the other end is hinged on the both sides on vertical cut cutter (24) top.

4, bottom-expanding equipment according to claim 2, it is characterized in that described axis (23) epimere is a screw rod, and the projection by the both sides, upper end puts in the corresponding slideway in the Upper shaft sleeve (14), and the hypomere cross section is square or lacks that the limit is circular matches with its Lower shaft sleeve outward of suit.

5,, it is characterized in that described axis (23) is provided with defining flange (52) on the position of the following certain distance of knife rest cross bar (50) according to claim 2 or 4 described bottom-expanding equipments.

6, bottom-expanding equipment according to claim 1, the upper and lower side that it is characterized in that described frame is upper and lower fixed disk (19,33), by fusing each other along circumferential uniform column (6), column (6) also is provided with two reinforcement fixed heads therebetween at least between the two.

7, bottom-expanding equipment according to claim 6 is characterized in that described going up in the fixed disk (19) along circumferentially uniform is provided with the horizontal location pin (18) that three afterbodys have spring at least.

8, bottom-expanding equipment according to claim 6, it is characterized in that the interior both sides of described lower fixed disk (33) be arranged with immersed tube in the alignment pin (3) that is complementary of locating slot, the inner of its pin is provided with spring (27), on spacer pin (32) is arranged, the outer end is provided with the iron pin (2) on band inclined-plane, top; Lower fixed disk (33) is inherent to be vertical centre with alignment pin (3) and radially to be provided with the horizontal pin (29) that can put in the draw-in groove on Lower shaft sleeve (21) perisporium, it is fixing with screw (31) that afterbody is provided with spring (30), and be provided with the handle of pulling out horizontal pin (29) on horizontal pin (29).

9, bottom-expanding equipment according to claim 2, a pyramidal metal closures of round platform of upper end suit (11) that it is characterized in that described Upper shaft sleeve (14), place on the centre of fixed disk (19), the bottom is provided with spring (15), the lower end of Upper shaft sleeve (14) is provided with rolling bearing, and the projection that its interior axially both sides are provided with slideway and both sides, axis (23) upper end is complementary.

10, bottom-expanding equipment according to claim 1, it is characterized in that described transmission mechanism comprises that an end links to each other with power source, the power rail that the other end links to each other with Upper shaft sleeve (14), fixing gear (8) is threaded with axis (23), the lower end of axis (23) is passed frame, lower fixed disk (33), knife rest cross bar (50) successively and is linked to each other with the upper end of vertical cut cutter (24), its cross section is circular upper part and square lower part or scarce limit circle, knife rest cross bar (50) is set on the axis (23), and Lower shaft sleeve (21) is fixedlyed connected with knife rest cross bar (50).