CN117822680A - Digging large arm driving guiding device of underground continuous vertical film wall building machine - Google Patents

Abstract

The invention discloses a driving and guiding device for a large excavating arm of a continuous vertical membrane wall building machine. The two ends of the through groove at the upper side of the amplitude transformer are provided with guide structures, the big arm is slidably arranged in the through groove, and the big arm is in matched contact with the guide structures; the guide structure comprises a plurality of side supporting wheels fixed on the end face of the amplitude transformer, a lower supporting wheel set fixed at the bottom of the amplitude transformer through groove and an upper supporting wheel set fixed at the top of the amplitude transformer through groove; the upper supporting wheel group comprises an upper supporting shaft fixedly connected with the amplitude transformer, and an upper turntable is rotatably arranged at the end part of the upper supporting shaft; the upper turntable is rotatably provided with an upper roller which is in rolling contact with the upper side surface of the large arm; the rack is fixed on the side surface of the big arm, the speed reducer is fixed on the amplitude transformer, and the speed reducer drives the rack on the big arm through the driving gear and the transition gear. The invention adopts a gear-rack transmission mode, so that the transmission is more stable and continuous; the guide mechanism adopts a double-support wheel set structure which is vertically symmetrical, has a floating rotation effect, can better fit with the large arm, and improves the stability of the large arm.

Description

Digging large arm driving guiding device of underground continuous vertical film wall building machine

Technical Field

The invention relates to engineering machinery for building an underground continuous water retaining wall, in particular to a large-arm driving and guiding device for excavating of an underground continuous vertical membrane wall building machine.

Background

The continuous diaphragm wall (also called as a water retaining wall) for the underground of the building has the main function of being used for areas such as river dykes, beaches, deserts, reservoirs and the like so as to solve the problem of hydraulic engineering infiltration. The construction operation needs to dig out the groove at the edges of the river dike, the beach, the desert and the reservoir, and then pour or backfill the water blocking material into the groove.

Chinese patent discloses an underground continuous vertical membrane wall building machine (CN 209162801U), which belongs to civil engineering machinery. Comprises a chassis assembly, a crawler traveling system, a guide arm amplitude changing system, an excavating system and a detachable film hanging curtain laying machine. The working principle of lifting drive for the excavating system in the guide arm amplitude system is as follows: the auxiliary oil cylinder stretches to drive the lifting oil cylinder of the excavating system to swing, so that a top block at the piston rod end of the lifting oil cylinder of the excavating system is controlled to be inserted into or pulled out of a top groove at one side of the long box-type steel structure shell; then, the lifting oil cylinder of the excavating system stretches to drive the excavating system to move up or down along the guide arm box; according to the method, the lifting oil cylinders and the auxiliary oil cylinders of the excavating system on two sides alternately operate to finish the retraction of the excavating system.

The technology controls and drives the retraction and the release of the excavating system (large arm) by using a lifting oil cylinder to repeatedly lift or descend, and has the following defects: the motion of each step of big arm all needs auxiliary cylinder cooperation to adjust the lift cylinder, leads to the motion of big arm not enough continuous, and moving efficiency is lower, and cylinder drive mechanism needs to arrange the oil circuit moreover, leads to the pipeline more.

Disclosure of Invention

In order to solve the defects in the prior art, the invention provides a driving and guiding device for a large excavating arm of a continuous vertical membrane wall building machine.

The invention adopts the following technical scheme: the driving and guiding device for the large excavating arm of the underground continuous film hanging wall building machine comprises an amplitude changing box and a large arm which is slidably arranged on the amplitude changing box;

the upper side of the amplitude transformer is provided with a through groove penetrating through the amplitude transformer, two ends of the through groove are provided with a front guide structure and a rear guide structure which are symmetrical, the big arm is arranged in the through groove, and the big arm is in matched contact with the front guide structure and the rear guide structure;

the front guide structure comprises a plurality of side supporting wheels fixed on the front end face of the amplitude transformer, the side supporting wheels are respectively arranged on two sides of the big arm, and the side supporting wheels are in rolling contact with the two side faces of the big arm; the front guide structure also comprises a lower support wheel set fixed at the bottom of the luffing box through groove and an upper support wheel set fixed at the top of the luffing box through groove, and the lower support wheel set and the upper support wheel set are vertically symmetrical;

the upper supporting wheel group comprises an upper supporting shaft fixedly connected with the amplitude transformer, and an upper turntable is rotatably arranged at the end part of the upper supporting shaft; the upper turntable is rotatably provided with an upper roller, and the upper roller is in rolling contact with the upper side surface of the large arm;

the lower supporting wheel set comprises a lower fulcrum, a lower rotary table and a row of lower rollers, and the lower rollers are in rolling contact with the lower side surface of the large arm;

the side surface of the large arm is provided with a sinking groove, and a rack is fixed in the sinking groove; a mounting groove is formed in one side of the middle of the amplitude changing box, and a speed reducer is fixed in the mounting groove; the speed reducer is connected with the rack through a gear transmission mechanism.

Preferably: the rollers on the upper turntable are symmetrically distributed on two sides of the upper support shaft.

Preferably: the large arm is of a multiparty box type welding structure;

the large arm comprises two parallel vertical plates, an upper transverse plate is welded on the upper side edges of the two vertical plates, a lower transverse plate is welded on the lower side edges of the two vertical plates, and a large square box is formed between the two vertical plates and the upper transverse plate as well as between the two vertical plates and the lower transverse plate;

a short L-shaped plate is welded between the lower edge of the vertical plate and the side edge of the lower transverse plate, and a small square box is formed between the short L-shaped plate and the vertical plate as well as between the short L-shaped plate and the lower transverse plate;

an L-shaped long plate is welded between the upper edge of the vertical plate and the side edge of the upper transverse plate, and a small square box is formed between the L-shaped long plate and the vertical plate as well as between the L-shaped long plate and the upper transverse plate; cover plates are welded on the upper side edges of the two long L-shaped plates.

Preferably: a row of large square box reinforcing rib plates are welded in the large square boxes, and a row of small square box reinforcing rib plates are welded in the small square boxes.

Preferably: the rack is positioned between the short L-shaped plate and the long L-shaped plate outside the vertical plate, and the rack is welded and fixed with the vertical plate, the short L-shaped plate and the long L-shaped plate.

Preferably: a telescopic sheath is arranged between the front part of the big arm and the front end surface of the amplitude transformer; the telescopic sheath comprises a multi-stage U-shaped sleeve which is sequentially sleeved in a sliding mode, the forefront U-shaped sleeve is fixedly connected with the front end face of the amplitude transformer box, and the last U-shaped sleeve is fixedly connected with the big arm.

Preferably: the guide groove is fixed on the inner wall of the U-shaped sleeve, and the guide strip is fixed on the outer wall of the U-shaped sleeve; the rear U-shaped sleeve is slidably arranged in the front U-shaped sleeve, the guide strip on the outer wall of the rear U-shaped sleeve is slidably arranged in the guide groove on the inner wall of the front U-shaped sleeve, and the opening of the guide groove is provided with a pressing edge for buckling the guide strip.

The invention has the beneficial effects that:

the transmission mechanism adopts a gear-rack transmission mode, so that the transmission is smoother and more continuous, and the connection of a speed reducer driven by hydraulic pressure is less, so that the pipeline is convenient to arrange;

the guide mechanism adopts a double-support wheel set structure which is vertically symmetrical, the support wheel set has a floating rotation effect, the large arm has a certain rotation trend when being subjected to a reaction force in the working process of the large arm, and the support wheel set which is in floating rotation can be better attached to the large arm, so that the stability of the large arm is improved;

the large arm adopts a composite square box welding structure that the four corners of the inner large square box are provided with the outer small square box, so that the structural strength of the large arm is greatly improved, the large arm can adapt to a longer large arm, and the large arm can be used for deeper groove operation; moreover, the sinking groove formed between the small square boxes on the outer side of the large arm can exactly perfectly fit with the fixing of the rack, so that the design and the installation of the gear-rack transmission mechanism are convenient to realize;

the telescopic sheath protects the front end of the big arm on one hand and can receive soil falling off during working on the other hand; the guide structure is added on the telescopic sheath, the guide structure can guide the telescopic sheath in a telescopic way, the overall structural strength of the telescopic sheath can be improved, and the phenomenon that the telescopic sheath is bent when more soil or is blocked is avoided.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic perspective view of the invention.

Fig. 2 is a top view of the invention.

Fig. 3 is a view from A-A in fig. 2.

Fig. 4 is a view in the direction B-B of fig. 2.

Fig. 5 is a view in the direction C-C of fig. 2.

FIG. 6 is a schematic perspective view of an inventive horn.

Fig. 7 is a front view of the horn of the invention.

Fig. 8 is a schematic perspective view of the boom and the telescopic sheath of the present invention.

Fig. 9 is a front view of the inventive boom and telescoping sheath.

Reference numerals illustrate: 1. a horn; 101. a through groove; 2. a large arm; 201. an upper cross plate; 202. a riser; 203. a lower cross plate; 204. a large square box; 205. a short L-shaped plate; 206. a small square box; 207. an elongated L-shaped plate; 208. a cover plate; 209. reinforcing rib plates of the large square box; 210. reinforcing rib plates of the small square boxes; 3. a side support wheel; 301. a wheel seat; 4. a lower support wheel set; 401. a lower support shaft; 402. a lower turntable; 403. a lower roller; 5. an upper support wheel set; 501. an upper support shaft; 502. an upper turntable; 503. an upper roller; 6. a rack; 7. a speed reducer; 8. a telescoping sheath; 801. a U-shaped sleeve; 802. a guide groove; 803. a guide bar; 804. edge pressing; 9. a drive gear; 10. a transition gear.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

The large arm driving and guiding device for the underground continuous film hanging wall building machine comprises an amplitude changing box 1 and a large arm 2 which is slidably arranged on the amplitude changing box 1, and is shown in combination with fig. 1 and 2. The two ends of the amplitude transformer 1 are provided with a front guide structure and a rear guide structure which are symmetrical and are used for limiting and guiding the big arm 2. A rack 6 is arranged on one side of the big arm 2, a speed reducer 7 is arranged on one side of the amplitude transformer 1, and the big arm 2 is driven to move through the speed reducer 7. The front end of the big arm 2 is connected with a telescopic sheath 8 in front of the amplitude transformer 1.

As shown in fig. 4, 6 and 7, the upper side of the horn 1 has a through groove 101 penetrating the horn 1, and symmetrical front and rear guide structures are provided at both ends of the through groove 101. The large arm 2 is installed in the through groove 101, and the front guide structure and the rear guide structure limit and guide the large arm 2. The present embodiment is described by taking the previous guiding structure as an example:

the front guide structure comprises 4 side supporting wheels 3 fixed on the front end face of the amplitude transformer 1, and the 4 side supporting wheels 3 are respectively arranged on two sides of the big arm 2. The side supporting wheels 3 are fixed on the front end face of the amplitude transformer 1 through wheel seats 301, and the side supporting wheels 3 limit and guide the two sides of the large arm 2.

The front guide structure also comprises a lower support wheel set 4 fixed at the bottom of the through groove 101 of the amplitude transformer 1 and an upper support wheel set 5 fixed at the top of the through groove 101 of the amplitude transformer 1, wherein the lower support wheel set 4 and the upper support wheel set 5 are vertically symmetrical. The upper support wheel set 5 includes an upper fulcrum 501, an upper turntable 502, and an upper roller 503. The upper support shaft 501 is fixedly connected with the horn 1 through a support (the support is omitted in the figure), the upper turntable 502 is semicircular, and the upper turntable 502 is rotatably mounted with the end part of the upper support shaft 501. A row of rollers 503 are rotatably mounted on the upper turntable 502, and a row of rollers 503 are parallel to the upper straight edge of the upper turntable 502 and symmetrically arranged on both sides of the upper supporting shaft 501. The upper roller 503 is connected with the upper side of the big arm 2 in a rolling way.

The lower supporting wheel set 4 comprises a lower supporting shaft 401, a lower turntable 402 and a row of lower rollers 403, and the lower rollers 403 are in rolling contact with the lower side surface of the large arm 2. The upper roller 503 cooperates with the lower roller 403 to restrict the upward and downward movement of the large arm 2 and to support the large arm 2. It can be seen that the lower support wheel set 4 and the upper support wheel set 5 have certain floating rotation effects, and in the working process of the large arm, the large arm has certain rotation trend due to the reaction force, and the floating rotation support wheel set can better fit the large arm, so that the stability of the large arm is improved.

Referring to fig. 2 and 3, a mounting groove is formed in one side of the middle of the horn 1, a speed reducer 7 is fixed in the mounting groove through a mounting plate, and a transition gear 10 is rotatably mounted in the mounting groove. The output end of the speed reducer 7 is connected with a driving gear 9, the driving gear 9 is meshed with a transition gear 10, and the transition gear 10 is meshed with the rack 6 on the big arm 2. The forward and reverse rotation of the speed reducer 7 can control the repetitive movement of the boom 2 along the horn 1.

As shown in fig. 8 and 9, the large arm 2 is a multipart box type welding structure. The upper side edges of the two vertical plates 202 are welded with the upper transverse plates 201, the lower side edges of the two vertical plates 202 are welded with the lower transverse plates 203, and a rectangular large square box 204 structure is formed between the two vertical plates 202 and the upper transverse plates 201 and between the two vertical plates 203. A short L-shaped plate 205 is welded between the lower edge of the vertical plate 202 and the side edge of the lower transverse plate 203, and a small square box 206 is formed between the short L-shaped plate 205 and the vertical plate 202 and between the short L-shaped plate 205 and the lower transverse plate 203. An L-shaped long plate 207 is welded between the upper edge of the vertical plate 202 and the side edge of the upper transverse plate 201, and a small square box 206 is formed between the L-shaped long plate 207, the vertical plate 202 and the upper transverse plate 201. A cover plate 208 is welded to the sides of the two long L-shaped plates 207. The vertical length of the long L-shaped plate is greater than that of the short L-shaped plate, and the long L-shaped plate and the short L-shaped plate are of an L-shaped structure formed by welding two flat plates. The big arm adopts the compound square box welded structure of the outer small square box arranged at the four corners of the inner big square box, so that the structural strength of the big arm is greatly improved. A row of large square box reinforcing rib plates 209 are welded in the large square box 204, and a row of small square box reinforcing rib plates 210 are welded in the small square box 206, so that the structural strength of the large arm is further improved.

As shown in fig. 9, a gap is formed between the short L-shaped plate 205 and the long L-shaped plate 207 to match the riser 202. A sink is integrally formed. The rack 6 is welded in the sinking groove, so that hidden installation of the rack 6 is realized, the sliding guide structure design of the large arm 2 is facilitated, and the integral strength of the large arm is further improved by utilizing the rack 6.

As shown in fig. 2, 5 and 8, the telescopic sheath 8 comprises a plurality of stages of U-shaped sleeves 801 which are sequentially sleeved in a sliding manner, the forefront stage of the U-shaped sleeves 801 are fixedly connected with the front end surface of the amplitude transformer 1, and the last stage of the U-shaped sleeves 801 are fixedly connected with the big arm 2. Specific: guide grooves 802 are fixed on the inner wall of the U-shaped sleeve 801, and guide strips 803 are fixed on the outer wall of the U-shaped sleeve 801. The rear U-shaped sleeve 801 is slidably mounted in the front U-shaped sleeve 801, the guide strip 803 on the outer wall of the rear U-shaped sleeve 801 is slidably mounted in the guide groove 802 on the inner wall of the front U-shaped sleeve 801, and a pressing edge 804 for buckling the guide strip 803 is arranged at the opening of the guide groove 802. The telescopic sheath protects the front end of the big arm on one hand and can receive soil falling off during working on the other hand; the guide structure is added on the telescopic sheath, the guide structure can guide the telescopic sheath in a telescopic way, the overall structural strength of the telescopic sheath can be improved, and the phenomenon that the telescopic sheath is bent when more soil or is blocked is avoided.

Working principle:

the amplitude changing box 1 is arranged in an amplitude changing mechanism of the underground continuous film hanging wall building machine, and the large arm 2 is provided with an excavating system for excavating a groove on the ground;

when the device is used, the state of the amplitude changing box 1 and the large arm 2 can be controlled through the amplitude changing mechanism, and a specific angle can be changed or maintained between the state of water and the vertical state;

a hydraulic drive speed reducer 7 is arranged on a support seat at one side of the amplitude transformer 1, a driving gear 9 is arranged on the speed reducer 7, the driving gear 9 drives a transition gear 10, and the transition gear 10 drives a rack 6 on the excavating big arm 2;

when the large arm is not lifted by the amplitude changing box to be in a horizontal state, the speed reducer can perform forward and backward balanced sliding operation;

when the large excavating arm is lifted by the amplitude transformer for 5-90 degrees and the speed reducer rotates positively and negatively, the large excavating arm can lift up and down;

in the moving process of the large arm 2, the side supporting wheels 3 limit and guide the two sides of the large arm 2, and the lower supporting wheel set 4 and the upper supporting wheel set 5 limit and guide the left side and the right side of the large arm 2 (in a vertical state), so that the large arm 2 can move stably;

the telescopic sheath 8 can automatically stretch out and draw back along with the movement of the big arm 2, and the left upper position of the big arm 2 (in a vertical state) is always closed, so that soil falling off by the excavating system can be ensured to fall into the groove through the telescopic sheath 8 and the through groove of the big arm 2, and then the soil is brought out by the excavating system again, and the soil is prevented from being spilled.

The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.

Claims (7)

1. The driving and guiding device for the excavating large arm of the underground continuous film hanging wall building machine comprises an amplitude changing box (1) and a large arm (2) which is slidably arranged on the amplitude changing box (1);

the method is characterized in that:

the upper side of the amplitude changing box (1) is provided with a through groove (101) penetrating through the amplitude changing box (1), two ends of the through groove (101) are provided with a front guide structure and a rear guide structure which are symmetrical, the big arm (2) is arranged in the through groove (101), and the big arm (2) is in matched contact with the front guide structure and the rear guide structure;

the front guide structure comprises a plurality of side supporting wheels (3) fixed on the front end face of the amplitude transformer (1), the side supporting wheels (3) are respectively arranged on two sides of the big arm (2), and the side supporting wheels (3) are in rolling contact with two side faces of the big arm (2); the front guide structure also comprises a lower support wheel set (4) fixed at the bottom of the through groove (101) of the amplitude transformer (1) and an upper support wheel set (5) fixed at the top of the through groove (101) of the amplitude transformer (1), wherein the lower support wheel set (4) and the upper support wheel set (5) are vertically symmetrical;

the upper supporting wheel set (5) comprises an upper supporting shaft (501) fixedly connected with the amplitude transformer (1), and an upper turntable (502) is rotatably arranged at the end part of the upper supporting shaft (501); an upper roller (503) is rotatably arranged on the upper turntable (502), and the upper roller (503) is in rolling contact with the upper side surface of the large arm (2);

the lower supporting wheel set (4) comprises a lower supporting shaft (401), a lower rotary table (402) and a row of lower rollers (403), and the lower rollers (403) are in rolling contact with the lower side surface of the large arm (2);

the side surface of the large arm (2) is provided with a sinking groove, and a rack (6) is fixed in the sinking groove; a mounting groove is formed in one side of the middle of the amplitude changing box (1), and a speed reducer (7) is fixed in the mounting groove; the speed reducer (7) is connected with the rack (6) through a gear transmission mechanism.

2. The excavating boom drive guide for a continuous falling film wall building machine according to claim 1, wherein: a row of upper rollers (503) on the upper turntable (502) are symmetrically distributed on two sides of the upper support shaft (501).

3. The excavating boom drive guide for a continuous falling film wall building machine according to claim 1, wherein: the large arm (2) is of a multiparty box type welding structure;

the large arm (2) comprises two parallel vertical plates (202), an upper transverse plate (201) is welded on the upper side edges of the two vertical plates (202), a lower transverse plate (203) is welded on the lower side edges of the two vertical plates (202), and a large square box (204) is formed between the two vertical plates (202) and the upper transverse plate (201) and between the two vertical plates (203);

a short L-shaped plate (205) is welded between the lower edge of the vertical plate (202) and the side edge of the lower transverse plate (203), and a small square box (206) is formed between the short L-shaped plate (205) and the vertical plate (202) and between the short L-shaped plate (205) and the lower transverse plate (203);

an L-shaped long plate (207) is welded between the upper edge of the vertical plate (202) and the side edge of the upper transverse plate (201), and a small square box (206) is formed between the L-shaped long plate (207) and the vertical plate (202) and between the L-shaped long plate and the upper transverse plate (201); cover plates (208) are welded on the upper side edges of the two long L-shaped plates (207).

4. A driving guide device for a large excavating arm of a continuous falling film wall building machine according to claim 3, wherein: a row of large square box reinforcing rib plates (209) are welded in the large square box (204), and a row of small square box reinforcing rib plates (210) are welded in the small square box (206).

5. A driving guide device for a large excavating arm of a continuous falling film wall building machine according to claim 3, wherein: the rack (6) is positioned between the short L-shaped plate (205) and the long L-shaped plate (207) on the outer side of the vertical plate (202), and the rack (6) is welded and fixed with the vertical plate (202), the short L-shaped plate (205) and the long L-shaped plate (207).

6. The excavating boom drive guide for a continuous falling film wall building machine according to claim 1, wherein: a telescopic sheath (8) is arranged between the front part of the big arm (2) and the front end surface of the amplitude transformer (1); the telescopic sheath (8) comprises a U-shaped sleeve (801) which is sleeved in a multistage and sequential sliding mode, the foremost U-shaped sleeve (801) is fixedly connected with the front end face of the amplitude transformer box (1), and the last U-shaped sleeve (801) is fixedly connected with the big arm (2).

7. The excavating boom drive guide for a continuous falling film wall building machine according to claim 6, wherein: a guide groove (802) is fixed on the inner wall of the U-shaped sleeve (801), and a guide strip (803) is fixed on the outer wall of the U-shaped sleeve (801); the rear U-shaped sleeve (801) is slidably arranged in the front U-shaped sleeve (801), the guide strip (803) on the outer wall of the rear U-shaped sleeve (801) is slidably arranged in the guide groove (802) on the inner wall of the front U-shaped sleeve (801), and a pressing edge (804) for buckling the guide strip (803) is arranged at the opening of the guide groove (802).