CN218472612U - Automatic sand pump of cable pit - Google Patents

Abstract

The utility model discloses an automatic sand pump for cable trench, which comprises a trailer, a loading and unloading lifting driving device, a loading and unloading frame, a sand pumping box, a sand pumping fan and a sand pumping pipe; the loading and unloading lifting driving device is arranged on the trailer frame; the loading and unloading frame is arranged above the trailer frame, one end of the loading and unloading frame is hinged with one end of the trailer frame, and the loading and unloading frame is connected with a push rod in the loading and unloading lifting driving device; the sand pumping box is arranged on the loading and unloading frame and comprises a sand pumping box body and a rear cover plate, a sand unloading opening, a sand inlet and a fan connecting opening are formed in the sand pumping box body, and the rear cover plate is arranged at the sand unloading opening and used for opening/closing the sand unloading opening; the sand pumping fan is arranged on the loading and unloading frame, and an air inlet of the sand pumping fan is connected with the fan connecting port; the sand pumping pipe is used for being connected with the sand inlet. The automatic sand pumping machine can realize mechanized collection, short-distance transportation and centralized stacking of sand in the cable trench, improve the efficiency of cable construction and fault first-aid repair, and ensure the construction environment and safety.

Description

Automatic sand pump of cable pit

Technical Field

The utility model relates to a cable construction equipment field, concretely relates to automatic sand pump of cable pit.

Background

Along with the upgrading and transformation of urbanization, the cable of old urban area is updated, the cable dilatation construction of new urban area is more and more, the manual work is still adopted at present to cable pit sand removal, intensity of labour is big, the problem that construction operation personnel have low culture level and poor safety consciousness and are older is outstanding, and the construction operation personnel supply quantity that is restricted by market human resource supply and has big intensity of labour is not enough, bring very big degree of difficulty for the construction management of team scene, artifical sand removal is inefficient, when salvageing project construction, the construction progress of whole salvage work is restricted seriously, need solve sand removal work and rely on artificial phenomenon seriously at present in the cable construction field. The existing equipment for draining sewage in a cable trench is only suitable for pumping sewage, is limited by a pumping object and cannot be suitable for pumping and draining substances such as sand and the like.

Disclosure of Invention

In order to solve the technical problem, an object of the utility model is to provide an automatic sand pumping machine of cable pit, it installs the loading and unloading frame on the trailer, install the sand pumping box on loading and unloading frame, drag the sand pumping box through the trailer and remove at the job site, the sand pumping fan of installing on the loading and unloading frame simultaneously evacuates to the sand pumping box, make the box form the negative pressure and begin to take out sand through taking out the sand pipe, take out full back, will automatic sand pumping machine transport to concentrated the point of stacking through removing the trailer, then loading and unloading lift drive arrangement drive loading and unloading frame and sand pumping box rotate, open the back shroud of sand pumping box, the grit is discharged to the mode of self-discharging, carry out next section sand pumping operation again, whole automatic sand pumping machine can realize the mechanized collection of cable pit sandy soil, short distance transportation and centralized type stack, improve cable construction and trouble and salvage efficiency, guarantee construction environment, safety.

In order to realize the purpose of the utility model, the utility model adopts the following technical scheme:

an automatic sand pump for cable trench, which is characterized by comprising

A trailer including a trailer frame and wheels disposed below the trailer frame;

the loading and unloading lifting driving device is arranged on the trailer frame;

the loading and unloading frame is arranged above the trailer frame, one end of the loading and unloading frame is hinged with one end of the trailer frame, and the loading and unloading frame is connected with a push rod in the loading and unloading lifting driving device;

the sand pumping box is arranged on the loading and unloading frame and comprises a sand pumping box body and a rear cover plate, a sand unloading opening, a sand inlet and a fan connecting opening are formed in the sand pumping box body, and the rear cover plate is arranged at the sand unloading opening and used for opening/closing the sand unloading opening;

the sand pumping fan is arranged on the loading and unloading frame, and an air inlet of the sand pumping fan is connected with the fan connecting port;

the sand pumping pipe is used for being connected with the sand inlet; one end of the sand pumping pipe is connected with the sand inlet, and the other end of the sand pumping pipe extends into the cable trench and is used for pumping sand or sewage in the cable trench; the sand pumping fan is used for pumping air to the sand pumping box body so as to form negative pressure in an inner cavity of the sand pumping box body, and then the sand pumping pipe is used for pumping sand to a region to be pumped;

the loading and unloading lifting driving device pushes the loading and unloading frame to rotate relative to the trailer frame through the push rod, so that the sand pumping box on the loading and unloading frame rotates along with the loading and unloading frame, and the automatic dumping of sand in the sand pumping box is completed by opening the rear cover plate.

Preferably, the loading and unloading frame comprises a bottom frame and side frames arranged on two sides of the bottom frame, an articulated piece hinged with the trailer frame is arranged at one end of the bottom frame, the side frames and the articulated piece enclose an installation area used for installing the sand pumping box, the bottom wall of the sand pumping box is connected with the upper end face of the bottom frame, the outer sides of two side walls of the sand pumping box are connected with the side frames through a connecting plate, the loading and unloading frame further comprises a front side frame arranged at the front end of the bottom frame, a sand inlet and a fan connecting port in the sand pumping box are arranged on the front side wall of a box body of the sand pumping box, and the front side wall is connected with the front side frame of the loading and unloading frame through a connecting plate.

The bottom of the loading and unloading frame and the side edges can be fixedly connected with the sand pumping box, the sand pumping box can be stably mounted on the loading and unloading frame, the sand pumping box cannot be separated from the loading and unloading frame in the moving process, the sand pumping process and the sand unloading process of the trailer, and the trailer and the loading and unloading frame can keep synchronous motion all the time.

Preferably, the number of articulated elements is at least two, so that the stability of the lift truck during rotation can be ensured.

Preferably, the wheels are arranged in a plurality, every two wheels which are arranged oppositely are connected through a connecting rod, and the trailer frame is connected with the connecting rods through leaf springs.

The two ends of the plate spring are respectively connected with the plate spring mounting pieces arranged on the lower end face of the trailer frame.

Preferably, the upper end face of the trailer frame far away from the end hinged to the loading and unloading frame is provided with a buffer block, or the lower end face of the loading and unloading frame far away from the end hinged to the trailer frame is provided with a buffer block.

Preferably, the buffer blocks are at least two and are made of rubber materials, and the buffer blocks can relieve the impact force on the trailer frame when the loading and unloading frame is in contact with the trailer frame in the descending process.

Preferably, the loading and unloading lifting driving device comprises a hydraulic cylinder body fixed on the trailer frame and a pushing shaft connected with the hydraulic cylinder body, a connecting block used for being connected with the pushing shaft is arranged on a chassis of the loading and unloading frame, and one end, far away from the hydraulic cylinder body, of the pushing shaft is connected with the connecting block through a pin shaft. The hydraulic cylinder body is connected with the hydraulic pump, the hydraulic pump provides power for the hydraulic cylinder body, and the push shaft is pushed to move, so that the push shaft drives the loading and unloading frame to complete lifting.

Preferably, the hydraulic cylinder bodies are arranged on two sides of the trailer frame along the width direction, so that the push rod is convenient to push the loading and unloading frame, and the two sides of the loading and unloading frame are balanced in stress.

Preferably, the sand pump further comprises a fan base used for installing the sand pump, and the fan base is arranged on the upper end face of the loading and unloading frame.

Preferably, the fan base is arranged at one end, close to the trailer head, of the loading and unloading frame, a motor protective cover is arranged on one side, close to the trailer head, of the fan base, and the motor protective cover is used for protecting a sand pumping fan and a motor on the fan base.

Preferably, the trailer further comprises a steering mechanism, the steering mechanism is arranged at one end, far away from the end hinged with the loading and unloading frame, of the trailer frame, and the steering mechanism is used for steering the trailer.

Preferably, one end of the steering mechanism is connected with the traction vehicle head, so that automatic transportation of the automatic sand pumping machine for the cable trench is realized, and the carrying speed is increased.

Preferably, the sand pumping box further comprises a filtering device, a reinforcing part, a rear cover plate and a sand baffle plate, wherein the filtering device is arranged at the fan connecting port and is used for preventing impurities with large particle size from entering the fan, so that the fan is prevented from being damaged; the reinforcing parts are arranged on the outer side of the side wall of the sand pumping box body; the reinforcing piece can enhance the overall strength of the sand pumping box body, and prevent the deformation of the sand pumping box body caused by the negative pressure of the sand pumping fan for pumping the sand pumping box body during the sand pumping work process; the rear cover plate is arranged at the sand discharging port and used for opening/closing the sand discharging port; the sand blocking plate is arranged in the inside of the sand pumping box body, the surface of the sand blocking plate faces towards the sand inlet, and the sand blocking plate is used for blocking sand entering from the sand inlet.

According to the sand pumping fan, the air inlet of the sand pumping fan can be connected with the fan connecting port, after the sand pumping fan is started, air in the sand pumping box body is pumped by the sand pumping fan to enable the sand pumping box body to form negative pressure, so that one end, extending into the cable trench, of the sand pumping pipe starts to pump sand, the sand enters the sand pumping box body through the sand inlet, certain impact force is generated when sand enters from the sand inlet, the sand blocking plate is arranged towards the direction of the sand inlet, so that the sand entering from the sand inlet can be blocked by the baffle and then falls below the baffle, the impact force generated by sand blasting is prevented from impacting the rear cover plate, the compact type of the connection of the rear cover plate and the sand unloading port is influenced, the whole tightness of the sand pumping box is ensured, meanwhile, the sand is sprayed and diffused around after impacting the sand blocking plate, the sand of the sand inlet is further prevented from impacting a certain point of the box body intensively, and the deformation of the box body caused by the centralized stacking and the overlarge impact force is avoided.

Preferably, the rear cover plate is connected with the sand pumping box body through a hinge device, the hinge device comprises a hinge seat, a hinge plate and a pin shaft used for connecting the hinge seat and the hinge plate, the hinge seat is arranged on the outer side of the top wall, close to the sand unloading opening, of the sand pumping box body, the hinge plate is arranged on the outer wall of the rear cover plate, and the hinge of the rear cover plate and the sand pumping box body is achieved through the hinge seat and the hinge plate. The rear cover plate is further connected with a hydraulic pull rod tightening device, the hydraulic pull rod tightening device drives the rear cover plate to rotate, the hydraulic pull rod tightening device comprises a piston rod and a hydraulic cylinder body, one end of the piston rod is connected with the rear cover plate, the other end of the piston rod is connected with a piston in the hydraulic cylinder body, and the hydraulic cylinder body is installed on a side frame of the loading and unloading frame through a hydraulic cylinder installation seat. The piston rod with the back shroud deviates from the one side of unloading the sand mouth is connected through coupling assembling, coupling assembling is including setting up connection piece on the back shroud, with the connecting piece that the connection piece is connected, set up on the connecting piece with the spread groove of piston rod tip joint, connection piece and connecting piece pass through screw fixed connection, the connecting piece with the tip of piston rod passes through round pin hub connection.

The hydraulic pull rod tightening device is additionally arranged on the rear cover plate, so that the rear cover plate can be automatically opened and closed under the action of the hydraulic pull rod tightening device, the rear cover plate can be tensioned all the time by the hydraulic pull rod tightening device, the rear cover plate can be attached to the sand unloading opening all the time when the sand unloading opening is closed, and the phenomenon of shaking of the rear cover plate in the sand pumping process can be prevented when the sealing performance is ensured.

More preferably, both sides of the rear cover plate along the width direction are connected with hydraulic pull rod tightening devices, so that the two sides of the rear cover plate can be enabled to keep synchronous rotation when the hydraulic pull rod tightening devices drive the rear cover plate to rotate, the balance of the rear cover plate in the motion process is ensured, and the two sides of the rear cover plate can be tightened to seal the sand unloading port.

Preferably, the sand pumping fan further comprises a first control box and a second control box, the first control box is used for controlling the sand pumping fan to work, and the second control box is used for controlling the loading, unloading, lifting and driving device and the hydraulic pull rod tightening device to work.

Compared with the prior art, the utility model discloses profitable technological effect has been obtained:

1. the utility model discloses an automatic sand pump of cable pit is through installing the loading and unloading frame on the trailer, install the sand pumping box in order to realize the removal of sand pumping box at the job site on loading and unloading frame, install the sand pumping fan on the loading and unloading frame simultaneously and manage to find time to the sand pumping box, make the box form the negative pressure and begin to take out the sand through taking out the sand pipe, take out full back, transport automatic sand pump to the point of stacking of concentrating through removing the trailer, then loading and unloading lift drive arrangement drive loading and unloading frame and sand pumping box rotate, open the back shroud of sand pumping box, the grit is discharged with the mode of self-discharging, carry out the sand pumping operation of one section down again, the mechanized collection of cable pit sandy soil can be realized to whole automatic sand pump, short distance transportation and centralized type stack, efficiency is salvageed in improvement cable construction and trouble, guarantee construction environment, safety.

2. The utility model discloses an automatic sand pump of cable pit can extract solid-state (mix silt and subside the sand of consolidation), liquid (silt form) and ordinary sand soil, has reduced the process of cable pit desilting drainage, desilting. Compare in only suitable extraction sewage in removing the blowdown car, but the scope of the automatic sand pump drainage medium of cable pit is wider, and the suitability is stronger. The automatic sand pumping machine of the cable trench can complete the operations of storage, transportation, loading and unloading.

Drawings

FIG. 1 is a schematic view of the overall structure of the automatic sand pump for cable trench of the present invention;

fig. 2 is a schematic view of the overall structure of the automatic sand extractor at another viewing angle of the cable trench of the present invention;

FIG. 3 is a schematic structural diagram of the assembly of the trailer, the loading and unloading frame and the sand pumping fan in the automatic sand pumping machine for cable trenches of the utility model;

FIG. 4 is a schematic structural view of the trailer, the loading and unloading frame and the sand pumping fan of the automatic sand pumping machine for cable trenches at another view angle;

FIG. 5 is a front view of the assembly of the trailer, the loading and unloading frame and the sand pumping fan in the automatic sand pumping machine for cable trench of the present invention;

FIG. 6 is a state diagram of the lifting of the loading and unloading frame and the separation of the trailer frame in the automatic sand pumping machine for cable ducts of the present invention;

FIG. 7 is a front view of the loading and unloading frame of the automatic sand pump for cable trench of the present invention separated from the trailer frame;

FIG. 8 is a schematic view of another perspective of the separation of the loading and unloading frame from the trailer frame in the automatic cable trench sand extractor of the present invention;

FIG. 9 is a schematic view of the overall structure of a sand pumping box in the automatic sand pumping machine for cable ducts of the present invention;

FIG. 10 is a front view of a sand pumping box in the automatic sand pumping machine for cable ducts of the present invention;

FIG. 11 is a rear view of a sand pumping box in the automatic sand pumping machine for cable ducts of the present invention;

fig. 12 is another angle overall structure diagram of the sand pumping box in the automatic sand pumping machine for cable trench according to the present invention;

FIG. 13 is a schematic structural view of a sand-pumping box removing back cover plate in the automatic sand-pumping machine for cable trench of the present invention;

FIG. 14 is another schematic structural view of an angle of the sand-pumping box removing back cover plate in the automatic sand-pumping machine for cable trench of the present invention;

FIG. 15 is a schematic view of the internal structure of the sand-pumping box removing back cover plate in the automatic sand-pumping machine for cable trench of the present invention;

wherein, the technical characteristics that each reference numeral refers to are as follows:

1. a sand pumping box body; 11. a sand unloading port; 12. a sand inlet; 121. a variable diameter flange; 1211. a diameter-variable part; 1212. a connecting portion; 13. a fan connecting port; 131. a connecting flange; 14. a sand baffle plate; 15. a dust-proof plate; 16. installing a pipe; 2. a reinforcement; 3. a rear cover plate; 31. a hinged seat; 32. a hinge plate; 4. a lower mounting plate; 5. a connecting plate; 6. a hydraulic pull rod tightening device; 61. a hydraulic cylinder body; 62. a piston rod; 63. connecting sheets; 64. a connecting member; 65. a hydraulic cylinder mounting seat; 7. a trailer; 71. a trailer frame; 711. a buffer block; 72. a wheel; 73. a loading and unloading lifting driving device; 731. a hydraulic cylinder body; 732. pushing the shaft; 74. an articulation member; 75. a plate spring; 8. assembling and disassembling the frame; 81. a chassis; 82. a side frame; 83. a front side frame; 84. connecting blocks; 9. a sand pumping fan; 91. a fan base; 10. a steering mechanism.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments, but the scope of the present invention is not limited to the following specific embodiments.

Examples

Referring to fig. 1-3, an automatic sand pump for cable trench comprises a trailer 7, a loading and unloading lifting driving device 73, a loading and unloading frame 8, a sand pump box, a sand pump blower 9 and a sand pump pipe; the trailer 7 includes a trailer frame 71 and wheels 72 disposed below the trailer frame 71; the loading and unloading lifting driving device 73 is arranged on the trailer frame 71; the loading and unloading frame 8 is arranged above the trailer frame 71, one end of the loading and unloading frame 8 is hinged with one end of the trailer frame 71, and the loading and unloading frame 8 is connected with a push rod in the loading and unloading lifting driving device 73; the sand pumping box is arranged on the loading and unloading frame 8 and comprises a sand pumping box body 1 and a rear cover plate 3, a sand unloading opening 11, a sand inlet 12 and a fan connecting opening 13 are arranged on the sand pumping box body 1, and the rear cover plate 3 is arranged at the sand unloading opening 11 and used for opening/closing the sand unloading opening 11; the sand pumping fan 9 is arranged on the loading and unloading frame 8, and an air inlet of the sand pumping fan 9 is connected with the fan connecting port 13; the sand pumping pipe is used for being connected with the sand inlet 12; one end of the sand pumping pipe is connected with the sand inlet 12, and the other end of the sand pumping pipe extends into the cable trench for pumping sand or sewage in the cable trench; the sand pumping box body 1 is pumped by the sand pumping fan 9 so as to form negative pressure in the inner cavity of the sand pumping box body 1, and then the sand pumping pipe pumps sand in an area to be sucked; preferably, the sand pumping pipe is a PVC hose with certain flexibility, the direction can be conveniently controlled to change the sand pumping point during sand pumping, and meanwhile, the material which can not shrink under the negative pressure of 0.2-0.3 MPa can be ensured.

The loading and unloading lifting drive device 73 pushes the loading and unloading frame 8 to rotate relative to the trailer frame 71 through the push rod, so that the sand pumping box on the loading and unloading frame 8 rotates along with the loading and unloading frame 8, and the automatic dumping of the sand in the sand pumping box is completed by opening the rear cover plate 3.

Referring to fig. 4, the loading and unloading frame 8 includes a bottom frame 81 and side frames 82 disposed at both sides of the bottom frame 81, a hinge member 74 hinged to the trailer frame 71 is disposed at one end of the bottom frame 81, the side frames 82 and the hinge member 74 enclose a mounting area for mounting the pumping box, the bottom wall of the pumping box is connected to the upper end surface of the bottom frame 81, and the outer sides of the opposite side walls of the pumping box are connected to the side frames 82 through a connecting plate 5. The loading and unloading frame 8 further comprises a front side frame 83 arranged at the front end of the bottom frame 81, a sand inlet 12 and a fan connecting port 13 on the sand pumping box are arranged on the front side wall of the sand pumping box body 1, and the front side wall is connected with the front side frame 83 of the loading and unloading frame 8 through a connecting plate 5. The bottom of the loading and unloading frame 8 and the side edges can be fixedly connected with the sand pumping box, the sand pumping box can be stably mounted on the loading and unloading frame 8, the trailer 7 is guaranteed not to be separated from the loading and unloading frame 8 in the moving process, the sand pumping box in the sand pumping process and the sand unloading process, and the trailer and the loading and unloading frame 8 can keep synchronous motion all the time.

The number of said articulations 74 is at least two, which ensures the stability of the loading bed 8 during rotation. The wheels 72 are provided in plurality, each two of the wheels 72 which are oppositely arranged are connected through a connecting rod, and the trailer frame 71 and the connecting rods are connected through a leaf spring 75. Due to the arrangement, the leaf springs 75 can buffer the trailer frame 71, the trailer frame 71 can bear the loading and unloading frame 8 and the sand pumping box with enough weight, each connecting rod is connected with at least two leaf springs 75, the leaf springs 75 on the connecting rods are respectively arranged on two sides of the connecting rod, so that the stress of the connecting rods is uniform, the centers of the leaf springs 75 are fixedly connected with the upper end faces of the connecting rods, and two ends of each leaf spring 75 are respectively connected with the leaf spring 75 mounting parts arranged on the lower end face of the trailer frame 71.

The upper end face of the trailer frame 71 far away from one end hinged with the loading and unloading frame 8 is provided with a buffer block 711, or the lower end face of the loading and unloading frame 8 far away from one end hinged with the trailer frame 71 is provided with a buffer block 711. The number of the buffer blocks 711 is at least two, the buffer blocks 711 are made of rubber materials, and the buffer blocks 711 can relieve impact force on the trailer frame 71 when the loading and unloading frame 8 is in contact with the trailer frame 71 in a descending process.

Referring to fig. 5 to 8, the loading and unloading lifting driving device 73 includes a hydraulic cylinder body 731 fixed on the trailer frame 71 and a pushing shaft 732 connected to the hydraulic cylinder body 731, a connecting block 84 for connecting to the pushing shaft 732 is disposed on the chassis 81 of the loading and unloading frame 8, and one end of the pushing shaft 732 away from the hydraulic cylinder body 731 is connected to the connecting block 84 by a pin. The hydraulic cylinder body 731 is connected with a hydraulic pump, the hydraulic pump provides power for the hydraulic cylinder body 731, and pushes the push shaft 732 to move, so that the push shaft 732 drives the loading and unloading frame 8 to complete lifting. The hydraulic cylinder body 731 of the present embodiment is preferably provided in two parts, and is respectively provided on both sides of the trailer frame 71 in the width direction, so that the push rod can balance the forces on both sides of the loading and unloading frame 8 when pushing the loading and unloading frame 8.

Referring to fig. 2, the automatic sand pump further includes a fan base 91 for mounting the sand pump 9, and the fan base 91 is disposed on the upper end surface of the loading and unloading frame 8. The fan base 91 is arranged at one end, adjacent to the head of the trailer 7, of the loading and unloading frame 8, a motor protective cover is arranged on one side, close to the head of the trailer 7, of the fan base 91, and the motor protective cover is used for protecting the sand pumping fan 9 and the motor on the fan base 91. The sand pumping fan 9 is a roots fan. The Roots blower is a blower with uniform and stable air draft, and has the characteristics of high efficiency, energy conservation, compact structure, small volume, light weight, convenience in use and the like. The Roots blower requires that the content of particles in the conveyed medium is not more than 100mg/m, the maximum size of the particles is not more than half of the minimum working clearance, and therefore the large-size particles can be filtered by arranging the filtering device.

The automatic sand pumping machine further comprises a steering mechanism 10, the steering mechanism 10 is arranged at one end, far away from the end hinged to the loading and unloading frame 8, of the trailer frame 71, and the steering mechanism 10 is used for steering the trailer 7. One end of the steering mechanism 10 is connected with the traction vehicle head, so that automatic transportation of the automatic sand pumping machine for the cable trench is realized, and the carrying speed is increased.

Referring to fig. 9 to 15, the sand pumping box of the automatic sand pumping machine further comprises a filtering device, a reinforcing member 2, a rear cover plate 3 and a sand baffle plate 14, wherein the filtering device is arranged at the fan connecting port 13 and is used for preventing impurities with large particle size from entering the fan, so that the fan is prevented from being damaged; the reinforcing parts 2 are arranged in plurality, and the reinforcing parts 2 are arranged on the outer side of the side wall of the sand pumping box body 1; the reinforcing part 2 can enhance the overall strength of the sand pumping box body 1, and prevent the deformation of the sand pumping box body 1 caused by the vacuumization negative pressure of the sand pumping fan 9 on the sand pumping box body 1 in the sand pumping working process; the rear cover plate 3 is arranged at the sand discharge port 11 and used for opening/closing the sand discharge port 11; the sand baffle plate 14 is arranged in the interior of the box body 1 of the sand-pumping box, the plate surface of the sand baffle plate 14 faces the sand inlet 12, and the sand baffle plate 14 is used for blocking sand entering from the sand inlet 12.

According to the arrangement, an air inlet of the sand pumping fan 9 can be connected with the fan connecting port 13, after the sand pumping fan 9 is started, air in the sand pumping box body 1 is pumped by the sand pumping fan 9 to enable the sand pumping box body 1 to form negative pressure, so that one end, extending into a cable trench, of a sand pumping pipe starts sand pumping and enters the sand pumping box body 1 through the sand inlet 12, due to the fact that certain impact force exists when sand enters from the sand inlet 12, the sand blocking plate 14 is arranged in the direction towards the sand inlet 12, the sand entering from the sand inlet 12 can be blocked by the blocking plate and then falls below the blocking plate, the impact force formed by sand blasting is prevented from impacting the rear cover plate 3, the compact type of the connection of the rear cover plate 3 and the sand unloading port 11 is influenced, the whole tightness of the sand pumping box is guaranteed, meanwhile, the sand splashes and diffuses after impacting the sand on the sand blocking plate 14, the sand of the sand inlet 12 is further prevented from impacting a certain point of the box body, and the sand accumulation and the box body is prevented from being accumulated and deformed due to overlarge impact force.

The sand unloading port 11 on the sand pumping box body 1 is arranged at one side of the sand pumping box body 1, and the sand inlet 12 and the fan connecting port 13 are both arranged at the other side of the sand pumping box body 1, so that the mutual interference of the sand unloading port 11 and the sand inlet 12 can be prevented. Simultaneously the height that advances sand mouth 12 center place is less than the height that fan connector 13 center place, advance sand mouth 12 and set up the first half of the side wall of the sand pumping box 1 makes advance sand mouth 12 with there is enough distance between the sand pumping box 1 to be used for the entering and piling up of sand, also can make the gravel that gets into in the sand pumping box 1 can fall into the bottom of sand pumping box 1 under the action of gravity fast, alleviates the raise dust of the inside of sand pumping box 1.

The sand baffle 14 is arranged at a position close to the sand unloading port 11 and opposite to the sand inlet 12, and two ends of the sand baffle 14 are respectively connected with the inner sides of two opposite side walls of the sand pumping box body 1. And the upper end of the sand baffle plate 14 is connected with the inner side of the top wall of the sand-pumping box body 1, so that sand is prevented from penetrating through a gap between the upper end of the sand baffle plate 14 and the top wall of the sand-pumping box body 1 to impact the rear cover plate 3.

The sand pumping box further comprises a lower mounting plate 4, the lower mounting plate 4 is arranged at the bottom of the outer wall of the sand pumping box body 1 and used for supporting the sand pumping box body 1, and the sand pumping box body 1 is mounted on the bottom frame 81 of the loading and unloading frame 8 through the lower mounting plate 4. The lower mounting plate 4 and the sand pumping box body 1 are integrally formed, or are connected to the outer side of the side wall of the sand pumping box body 1 in a welding mode. The lower mounting plate 4 can provide enough supporting force for the sand pumping box body 1, so that the sand pumping box body 1 is more stably mounted.

The sand pumping box body 1 is made of stainless steel, the corrosion resistance of the stainless steel is high, the service life of the sand pumping box body 1 can be guaranteed, the reinforcing piece 2 is made of channel steel, and the channel steel is fixed on the outer wall of the sand pumping box body 1 in a welding mode, so that the sand pumping box body 1 is reinforced. All be provided with at least one channel-section steel on a plurality of outer walls of the flask box 1 to make the flask box 1 obtains diversified intensity to increase, has promoted the whole anti deformability of flask.

A dust-proof plate 15 is arranged in the sand-pumping box body 1, and the dust-proof plate 15 is arranged between the sand inlet 12 and the fan connecting port 13, so that the dust-proof plate 15 separates the sand inlet 12 from the fan connecting port 13. The face of dust guard 15 is towards fan connector 13 sets up, the one end of dust guard 15 is connected on the lateral wall inboard at sand inlet 12 place, and is located sand inlet 12 with between the fan connector 13, the other end of dust guard 15 is connected on the adjacent lateral wall of sand inlet 12 place lateral wall, dust guard 15 with two adjacent lateral walls of sand pumping box 1 enclose into dustproof region jointly, so that fan connector 13 is arranged in the dustproof region. Due to the arrangement, the dust-proof plate 15 can protect and prevent dust for the fan connecting port 13, the sand inlet 12 is close to the fan connecting port 13, so that sand particles can splash and raise dust in the process of entering the sand pumping box body 1 from the sand inlet 12, the sand inlet 12 and the fan connecting port 13 are just separated by the dust-proof plate 15, a separation barrier is formed between the sand inlet 12 and the fan connecting port 13, and the entering of large-diameter particles into the sand pumping fan 9 from the fan connecting port 13 is further reduced.

The top of the dust guard 15 is connected with the inner side of the top wall of the sand pumping box body 1, the height of the dust guard 15 is larger than the diameter of the sand inlet 12, and the bottom of the dust guard 15 is positioned below the sand inlet 12 or flush with the lower part of the sand inlet 12 in the height direction. With this arrangement, it is possible to reduce the entry of part of the dust from the bottom of the dust-proof plate 15 into the dust-proof area.

And a sealing rubber gasket is arranged on the end surface of the sand unloading opening 11, and/or a sealing rubber gasket is arranged on one surface of the rear cover plate 3 facing the sand unloading opening 11. By the arrangement, the tightness of the joint of the sand unloading opening 11 and the rear cover plate 3 can be ensured, and the air tightness of the inside of the whole sand pumping box body 1 in the sand pumping process can be further ensured.

The rear cover plate 3 is connected with the sand pumping box body 1 through a hinge device, the hinge device comprises a hinge seat 31, a hinge plate 32 and a pin shaft used for connecting the hinge seat 31 and the hinge plate 32, the hinge seat 31 is arranged on the outer side of the top wall of the sand pumping box body 1 close to the sand unloading port 11, the hinge plate 32 is arranged on the outer wall of the rear cover plate 3, and the hinge of the rear cover plate 3 and the sand pumping box body 1 is realized through the hinge seat 31 and the hinge plate 32. The rear cover plate 3 is further connected with a hydraulic pull rod tightening device 6, the hydraulic pull rod tightening device 6 drives the rear cover plate 3 to rotate, the hydraulic pull rod tightening device 6 comprises a piston rod 62 and a hydraulic cylinder body 61, one end of the piston rod 62 is connected with the rear cover plate 3, the other end of the piston rod 62 is connected with a piston in the hydraulic cylinder body 61, and the hydraulic cylinder body 61 is installed on a side frame 82 of the loading and unloading frame 8 through a hydraulic cylinder installation seat 65. Piston rod 62 with back shroud 3 deviates from unload the one side of sand mouth 11 and pass through coupling assembling and connect, coupling assembling is including setting up connection piece 63 on back shroud 3, with the connecting piece 64 that connection piece 63 is connected, set up on the connecting piece 64 with the spread groove of the joint of piston rod 62 tip, connection piece 63 and connecting piece 64 pass through screw fixed connection, the connecting piece 64 with the tip of piston rod 62 passes through the round pin hub connection.

Increase hydraulic pressure pull rod tightening means 6 on the back shroud 3, can make back shroud 3 realize automatic opening and closing function under hydraulic pressure pull rod tightening means 6's effect, and hydraulic pressure pull rod tightening means 6 can taut back shroud 3 all the time, makes back shroud 3 can hug closely all the time in the department of unloading sand mouth 11 when sealing unloading sand mouth 11, can also prevent to take out sand in-process back shroud 3 and appear rocking phenomenon when guaranteeing sealing performance.

The preferred back shroud 3 of this embodiment all is connected with hydraulic pressure pull rod tightening means 6 along width direction's both sides, can guarantee like this that hydraulic pressure pull rod tightening means 6 can make the both sides of back shroud 3 keep synchronous rotation when driving back shroud 3 and rotate, guarantees the equilibrium of back shroud 3 motion in-process, and can guarantee that the both sides of back shroud 3 all can realize tightening up in order to seal sand discharge opening 11.

The lower half part of the cross section of the sand pumping box body 1 along the height direction is semicircular, so that the bottom wall of the sand pumping box body 1 is a circular arc wall. Set up like this, be convenient for sand is followed can unload fast when pouring out in the sand pumping box 1, prevent that sand from being in the clearance between the diapire of sand pumping box 1 and the lateral wall from piling up remaining condition and appearing for dumping of sand is more thorough, has reduced the remaining solidification phenomenon of piling up of sand in the sand pumping box 1.

The sand pumping pipe is connected with the sand pumping box through the reducing flange 121, one end of the reducing flange 121 is used for being connected with the sand inlet 12, the other end of the reducing flange 121 is used for being connected with the sand pumping pipe, the reducing flange 121 comprises a reducing portion 1211 connected with the sand inlet 12 and a connecting portion 1212 connected with the reducing portion 1211, the diameter of the reducing portion 1211 is gradually reduced along the direction far away from the sand inlet 12, the diameter of the connecting portion 1212 is kept unchanged, and the sand pumping pipe is connected with the connecting portion 1212; the fan connecting port 13 is provided with a connecting flange 131, and the connecting flange 131 is used for being connected with an air inlet pipe of the sand pumping fan 9.

Reducing flange 121 can make it will spray the face and enlarge gradually to take out behind the sand pipe extraction sand at reducing flange 121 department, increase the diffusion face behind sand gets into the sand pumping box 1 for sand can be extracted to the most region of taking out sand box 1, prevents that sand from piling up in a small circle region, and then has improved the space utilization of taking out sand box 1.

Reducing flange 121 all extends with flange 131's one end the inside of taking out sand box 1, reducing flange 121 with the medial surface of taking out sand box 1 is full weld on the circumferencial direction to make reducing flange 121 and the sand inlet 12 zonulae occludens on taking out sand box 1, flange 131 with the medial surface of taking out sand box 1 is also full weld on the circumferencial direction, so that flange 131 and the fan connector 13 zonulae occludens on taking out sand box 1, and reducing flange 121, flange 131 all with it is even to take out sand box 1 welding, ensures the compact type and the leakproofness of junction.

The sand pumping box comprises a sand pumping box body 1 and is characterized in that a mounting pipe 16 is further arranged on the sand pumping box body 1, one end of the mounting pipe 16 extends into the sand pumping box body 1, the other end of the mounting pipe 16 is arranged outside the sand pumping box body 1 and is used for mounting a negative pressure meter, and the negative pressure meter is used for monitoring the air pressure in the sand pumping box body 1 in real time.

The automatic sand pumping machine comprises a first control box and a second control box, the first control box is used for controlling the work of the sand pumping fan 9, and the second control box is used for controlling the work of the loading and unloading lifting driving device 73 and the hydraulic pull rod tightening device 6.

The automatic sand pumping machine for the cable trench of the embodiment is characterized in that a loading and unloading frame 8 is arranged on a trailer 7, a sand pumping box is arranged on the loading and unloading frame 8 to realize the movement of the sand pumping box on a construction site, a sand pumping fan 9 arranged on the loading and unloading frame 8 pumps the sand pumping box to form negative pressure, the sand pumping box starts to pump sand through a sand pumping pipe, after the sand pumping box is fully pumped, the automatic sand pumping machine is conveyed to a centralized stacking point through the mobile trailer 7, then a loading and unloading lifting driving device 73 drives the loading and unloading frame 8 and the sand pumping box to rotate, a rear cover plate 3 of the sand pumping box is opened to discharge sand in a self-discharging mode, and then the next section of sand pumping operation is carried out.

Variations and modifications to the above-described embodiments may occur to those skilled in the art, in light of the above teachings and teachings. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should fall within the protection scope of the claims of the present invention. In addition, although specific terms are used in the specification, the terms are used for convenience of description and do not limit the utility model in any way.

Claims (10)

1. An automatic sand pump for cable trench, which is characterized by comprising

A trailer (7), said trailer (7) comprising a trailer frame (71) and wheels (72) disposed below said trailer frame (71);

a loading and unloading lifting drive device (73), wherein the loading and unloading lifting drive device (73) is arranged on the trailer frame (71);

the loading and unloading frame (8), the loading and unloading frame (8) is arranged above the trailer frame (71), one end of the loading and unloading frame (8) is hinged with one end of the trailer frame (71), and the loading and unloading frame (8) is connected with a push rod in the loading and unloading lifting driving device (73);

the sand pumping box is arranged on the loading and unloading frame (8), the sand pumping box comprises a sand pumping box body (1) and a rear cover plate (3), a sand unloading opening (11), a sand inlet (12) and a fan connecting opening (13) are formed in the sand pumping box body (1), and the rear cover plate (3) is arranged at the sand unloading opening (11) and used for opening/closing the sand unloading opening (11);

the sand pumping fan (9), the sand pumping fan (9) is arranged on the loading and unloading frame (8), and an air inlet of the sand pumping fan (9) is connected with the fan connecting port (13);

the sand pumping pipe is used for being connected with the sand inlet (12);

the loading and unloading lifting driving device (73) pushes the loading and unloading frame (8) to rotate relative to the trailer frame (71) through the push rod, so that the sand pumping box on the loading and unloading frame (8) rotates along with the loading and unloading frame (8), and the sand in the sand pumping box is dumped by opening the rear cover plate (3).

2. The automatic sand pump for cable ditches as claimed in claim 1, wherein the loading and unloading frame (8) comprises an underframe (81) and side frames (82) arranged at two sides of the underframe (81), one end of the underframe (81) is provided with a hinge piece (74) hinged with the trailer frame (71), the side frames (82) and the hinge piece (74) enclose a mounting area for mounting the sand pump box, the bottom wall of the sand pump box is connected with the upper end face of the underframe (81), and the outer sides of two side walls of the sand pump box are connected with the side frames (82) through connecting plates (5).

3. The automatic cable trench extractor according to claim 1, wherein the wheels (72) are provided in plurality, each two oppositely arranged wheels (72) are connected through a connecting rod, and the trailer frame (71) is connected with the connecting rod through a leaf spring (75).

4. The automatic sand pump for cable trenches as claimed in claim 1, characterized in that the upper end face of the trailer frame (71) remote from the end hinged to the loading and unloading frame (8) is provided with a buffer block (711), or the lower end face of the loading and unloading frame (8) remote from the end hinged to the trailer frame (71) is provided with a buffer block (711).

5. The automatic sand pumping machine for the cable trench as claimed in claim 1 or 2, wherein the loading and unloading lifting driving device (73) comprises a hydraulic cylinder body (731) fixed on the trailer frame (71) and a pushing shaft (732) connected with the hydraulic cylinder body (731), a connecting block (84) used for being connected with the pushing shaft (732) is arranged on a chassis (81) of the loading and unloading frame (8), and one end, far away from the hydraulic cylinder body, of the pushing shaft (732) is connected with the connecting block (84) through a pin shaft.

6. The automatic sand pumping machine for cable ducts of claim 1, further comprising a fan base (91) for mounting the sand pumping fan (9), wherein the fan base (91) is arranged on the upper end face of the loading and unloading frame (8).

7. The automatic cable trench sand extractor according to claim 1, further comprising a steering mechanism (10), wherein the steering mechanism (10) is arranged at one end of the trailer frame (71) far away from the end hinged with the loading and unloading frame (8), and the steering mechanism (10) is used for steering the trailer (7).

8. The automatic sand pump for cable ducts of claim 1, wherein the sand pump box further comprises a filter device, a reinforcing member (2), a rear cover plate (3) and a sand baffle plate (14), and the filter device is arranged on the fan connecting port (13); the reinforcing pieces (2) are arranged in plurality, and the reinforcing pieces (2) are arranged on the outer side of the side wall of the sand pumping box body (1); the rear cover plate (3) is arranged at the sand discharging opening (11) and is used for opening/closing the sand discharging opening (11); the sand blocking plate (14) is arranged in the box body (1) of the sand pumping box, the surface of the sand blocking plate (14) faces the sand inlet (12), and the sand blocking plate (14) is used for blocking sand entering from the sand inlet (12).

9. The automatic sand pumping machine for the cable trench according to claim 2 is characterized in that the rear cover plate (3) is connected with the sand pumping box body (1) through a hinge device, a hydraulic pull rod tightening device (6) is further connected to the rear cover plate (3), the rear cover plate (3) is driven to rotate through the hydraulic pull rod tightening device (6), the hydraulic pull rod tightening device (6) comprises a piston rod (62) and a hydraulic cylinder body (61), one end of the piston rod (62) is connected with the rear cover plate (3), the other end of the piston rod (62) is connected with a piston in the hydraulic cylinder body (61), and the hydraulic cylinder body (61) is installed on a side frame (82) of the loading and unloading frame (8) through a hydraulic cylinder installation seat (65).

10. The automatic sand extractor of a cable trench as claimed in claim 1, further comprising a first control box for controlling the operation of the sand extractor (9) and a second control box for controlling the operation of the loading and unloading lifting drive device (73) and the hydraulic tension rod tightening device (6).

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