Chassis walking and steering mechanism of hydraulic static pile driver

Abstract

The utility model discloses a chassis walking and steering mechanism of a hydraulic static pile driver, which comprises a machine body, two transverse walking mechanisms, two longitudinal walking mechanisms, two transverse climbing mechanisms and two longitudinal climbing mechanisms, the two ends of the machine body in the length direction are respectively arranged on the two transverse walking mechanisms, and the two longitudinal climbing mechanisms are respectively arranged on the two longitudinal walking mechanisms. Two transverse walking oil cylinders of the transverse walking mechanism are connected with and drive the two transverse walking trolleys respectively, the transverse jacking mechanism drives the machine body and the transverse walking trolleys to move relatively, and the two longitudinal walking mechanisms are connected to the two ends of the machine body in the width direction respectively. A longitudinal-track upper-layer box body of the longitudinal-track walking mechanism is rotatably installed on a longitudinal-track lower-layer box body, and two longitudinal-track walking oil cylinders are connected with and drive two longitudinal-track walking trolleys respectively. The walking device can walk transversely, longitudinally and steer, is self-adaptively adjusted during walking, is suitable for uneven construction site pavements, and is not easy to sink; and the machine body does not interfere with the lifting of the longitudinal climbing mechanism on the longitudinal walking mechanism.

Description

Technical Field

[0001] The utility model belongs to the technical field of pile drivers, in particular to a chassis walking and steering mechanism of a hydraulic static pile driver. Background Art

[0002] Static pressure construction of precast piles is a new type of environmentally friendly pile foundation construction method that uses static pressure to steadily press precast piles into the foundation. At present, static pile pressure construction method has been widely used in domestic pile foundation construction. In addition to static pile pressure for precast piles, static pile pressure construction method is also widely used for H-shaped steel piles, steel pipe piles and other special-shaped steel piles. Hydraulic static construction has the advantages of clean site, no noise, no vibration, no sewage, no smoke and dust, fast pile pressure speed and high efficiency. It is suitable for operation in urban areas with special requirements on the environment. Hydraulic static pile driver is currently a widely used equipment for static pressure construction. There are some disadvantages of hydraulic static pile drivers in the prior art, such as pile drivers often sink into the foundation, existing pile drivers are often difficult to get out of trouble and walk normally when the machine is seriously sunk, and walking and transportation are not flexible. Utility Model Content

[0003] In view of the above-mentioned problems existing in the prior art, the purpose of the utility model is to provide a chassis walking and steering mechanism of a hydraulic static pile driver, which can walk horizontally, vertically and turn, reach the pile foundation hole more flexibly and accurately, and adjust adaptively during walking, so that it is more suitable for uneven construction site roads and is not easy to get stuck; each horizontal walking mechanism and vertical walking mechanism are symmetrically arranged with double cylinders, which can provide the same amount of force to the machine body in two opposite directions, so that the pile driver can get out of trouble more smoothly and quickly when it is stuck, and the legs extend beyond the two ends of the fuselage in the width direction, so that the fuselage will not interfere with the lifting of the longitudinal walking mechanism by the longitudinal shoe lifting mechanism, and the lifting range of the longitudinal walking mechanism is greatly improved with the longitudinal shoe lifting cylinder with a large stroke, and the fuselage has a three-section structure. During production, three sections can be produced separately and then assembled, which is convenient for the production and installation of the entire fuselage; the leg hinge seat has high strength.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A chassis walking and steering mechanism of a hydraulic static pile driver comprises a machine body, two transverse walking mechanisms, two longitudinal walking mechanisms, two transverse shoe lifting mechanisms and two longitudinal shoe lifting mechanisms. The two transverse walking mechanisms are arranged in parallel and at intervals, and the two ends of the machine body in the length direction are respectively installed on the two transverse walking mechanisms. The transverse walking mechanisms comprise transverse shoes, two transverse walking trolleys and two transverse walking cylinders. The two transverse walking cylinders are symmetrically arranged at the two ends in the length direction of the transverse shoes. The two transverse walking cylinders are respectively connected to and drive the two transverse walking trolleys to move in the same straight line. Each end of the machine body in the length direction is respectively articulated to the two transverse walking trolleys through the two transverse shoe lifting mechanisms. The transverse shoe lifting mechanisms drive the machine body and the transverse shoes. The two longitudinal walking mechanisms are located between the two transverse walking mechanisms, and the two longitudinal walking mechanisms are respectively connected to the two ends of the width direction of the fuselage. The longitudinal walking mechanism includes a longitudinal shoe lower box, a longitudinal shoe upper box, two longitudinal walking trolleys and two longitudinal walking cylinders. The longitudinal shoe upper box is rotatably mounted on the longitudinal shoe lower box, and the two longitudinal walking cylinders are symmetrically arranged at the two ends of the longitudinal shoe upper box in the length direction. The two longitudinal walking cylinders are respectively connected to and drive the two longitudinal walking trolleys to move in the same straight line. Each end of the fuselage in the width direction is respectively articulated to the two longitudinal walking trolleys through two longitudinal shoe lifting mechanisms, and the longitudinal shoe lifting mechanisms drive the fuselage and the longitudinal walking trolley to move relative to each other.

[0006] As a further improvement of the above technical solution:

[0007] Both ends of the fuselage width direction are connected with outriggers, one end of the outrigger is connected to the fuselage and the other end exceeds the fuselage, one end of the longitudinal shoe lifting cylinder is installed on the end of the outrigger that exceeds the fuselage, and the other end of the longitudinal shoe lifting cylinder is connected to the longitudinal walking trolley.

[0008] The leg is connected to the fuselage through a leg hinge seat, and the leg hinge seat includes a side panel, a support plate, a reinforcing beam, a limiting shaft, and a hoop. Both the side panel and the support plate are plate-like structures connected to the fuselage. Two side panels are provided, and the two side panels are arranged in parallel and spaced apart. The plane where the side panels are located is perpendicular to the length direction of the fuselage. Two support plates are provided, and the two support plates are arranged in parallel and spaced apart. The support plates and the side panels are perpendicular. The two ends of one support plate are respectively connected to the upper ends of the two side panels, and the two ends of the other support plate are respectively connected to the lower ends of the two side panels. Two reinforcing beams are also provided, and the two ends of the reinforcing beam are respectively connected to the two side panels, and the two ends of the limiting shaft are respectively connected to the two support plates. When the leg is connected to the fuselage, one end of the leg is inserted between the two support plates, and then the limiting shaft passes through the support plate and one end of the leg. The hoop surrounds one end of the leg hinge seat close to the entrance of the leg insertion, and the reinforcing beam is also connected to one end of the side panel close to the entrance of the leg.

[0009] The cross shoe is supported on the ground and is a long strip structure. The moving direction of the cross shoe trolley is parallel to the length direction of the cross shoe.

[0010] The transverse walking mechanism also includes a transverse guide rail installed on the transverse shoe, and two transverse walking trolleys move along the transverse guide rail.

[0011] The transverse shoe lifting mechanism includes a transverse shoe lifting cylinder and a transverse shoe lifting ball head. One end of the transverse shoe lifting cylinder is installed on the machine body and the other end is connected to the transverse shoe lifting ball head. A ball head seat is provided on the transverse shoe walking trolley, and the ball head seat cooperates with the spherical surface of the ball head on the transverse shoe lifting cylinder.

[0012] The longitudinal shoe lifting mechanism comprises a longitudinal shoe lifting cylinder, the cylinder barrel of which is installed on the support leg, the piston rod of which is connected to the longitudinal shoe lifting ball head, and the longitudinal shoe lifting ball head is spherically connected with the ball head seat on the longitudinal shoe walking trolley.

[0013] Both ends of the top surface of the lower box body of the longitudinal shoe are provided with anti-friction strips, and the anti-friction strips are in direct contact with the bottom surface of the upper box body of the longitudinal shoe.

[0014] The chassis walking and steering mechanism also includes a reset member for resetting the lower box of the longitudinal shoe, the two ends of the reset member are respectively connected to the machine body and the lower box of the longitudinal shoe, and the reset member is elastic.

[0015] The fuselage comprises a middle part, a side pile fuselage and a boom seat, and the side pile fuselage, the middle part and the boom seat are connected in sequence along the length direction of the fuselage.

[0016] The beneficial effects of the utility model are:

[0017] (1) The chassis walking and steering mechanism can walk horizontally, walk vertically and turn, and reach the pile foundation hole more flexibly and accurately; the horizontal walking mechanism and the vertical walking mechanism are both spherically connected with the machine body, and the horizontal walking mechanism and the vertical walking mechanism can rotate relative to the machine body, so that the horizontal walking mechanism and the vertical walking mechanism can be adaptively adjusted during walking, which is more suitable for uneven construction site roads and is not easy to get stuck; each horizontal walking mechanism and the vertical walking mechanism are symmetrically arranged with double cylinders, which can provide the same amount of force to the machine body in two opposite directions, so that the pile driver can get out of trouble more smoothly and quickly when it is stuck, overcoming the problem of a single cylinder in opposite directions. The longitudinal shoe lifting mechanism is installed on the support legs, and the support legs extend beyond the two ends in the width direction of the fuselage, so that the fuselage will not interfere with the lifting of the longitudinal walking mechanism by the longitudinal shoe lifting mechanism. Combined with the longitudinal shoe lifting cylinder with a long stroke, the lifting range of the longitudinal walking mechanism is greatly improved, and the ability to escape from being stuck is further improved. Moreover, due to the large lifting range of the longitudinal walking mechanism, after the longitudinal walking mechanism is lifted, a flatbed truck or the like can be directly extended into the bottom of the fuselage to support the fuselage for subsequent transfer, without the need to dismantle part or all of the structure of the longitudinal walking mechanism and then extend the flatbed truck into the bottom of the fuselage.

[0018] (2) The fuselage has a three-section structure. During production, the three sections can be produced separately and then assembled, which is convenient for the production and installation of the entire fuselage. The leg hinge is provided with a clamp, a crossbeam, etc. at the leg entrance to make the leg hinge have higher strength. After the legs extend beyond the two ends of the fuselage in the width direction, the longitudinal walking mechanism still does not extend beyond the two ends in the length direction of the cross shoe, so the area and space occupied by the pile driver will not be increased. A notch is provided on the inner side of the cross shoe, which can reduce the distance between the pile foundation entrance on the inner side of the cross shoe and the obstacles (such as walls, etc.) on the outer side of the cross shoe, which is conducive to more effective utilization of land resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of an embodiment of the utility model.

[0020] Figure 2 It is a schematic diagram of the structure of a transverse walking mechanism of an embodiment of the utility model.

[0021] Figure 3 It is a structural schematic diagram from another perspective of the transverse walking mechanism of an embodiment of the utility model.

[0022] Figure 4 It is a schematic diagram of the main structure of a leg hinge seat of an embodiment of the utility model.

[0023] Figure 5 The utility model is a schematic diagram of a top view of the structure of a leg hinge seat according to an embodiment of the utility model. DETAILED DESCRIPTION

[0024] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0025] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0026] A chassis walking and steering mechanism of a hydraulic static pile driver, such as Figures 1 to 5 As shown, it includes a fuselage 100, a transverse walking mechanism, a longitudinal walking mechanism, a transverse walking lifting mechanism, a longitudinal walking lifting mechanism and a counterweight beam 600.

[0027] The transverse walking mechanism and the longitudinal walking mechanism support and drive the fuselage 100 to move and turn, the transverse shoe lifting mechanism drives the fuselage 100 and the transverse walking mechanism to move relative to each other, and the longitudinal shoe lifting mechanism drives the fuselage 100 and the longitudinal walking mechanism to move relative to each other. In other words, the transverse shoe lifting mechanism and the longitudinal shoe lifting mechanism respectively drive the transverse walking mechanism and the longitudinal walking mechanism to lift off the ground, and also drive the fuselage 100 to rise or fall, so that the transverse walking mechanism and the longitudinal walking mechanism cooperate to realize the movement and turning of the fuselage 100. The fuselage 100 is used to support other components of the pile driver except the transverse walking mechanism and the longitudinal walking mechanism.

[0028] like Figure 1 As shown, the fuselage 100 is a box structure as a whole, which is light in weight and has high strength and rigidity. The fuselage 100 includes a middle part 110, a side pile fuselage 120 and a boom seat 130. The side pile fuselage 120, the middle part 110 and the boom seat 130 are sequentially connected along the length direction of the fuselage 100. An operating room 111 is installed on the middle part 110, a pile pressing mechanism is mainly installed on the side pile fuselage 120, and a crane is mainly installed on the boom seat 130. The fuselage 100 is a three-section structure, and the three sections are similar in size. When manufacturing, the three sections can be manufactured separately and then assembled, which is convenient for the overall manufacturing and installation of the fuselage 100.

[0029] Two transverse travel mechanisms are provided, preferably, the two transverse travel mechanisms are arranged in parallel and spaced apart. The two ends of the fuselage 100 in the length direction are respectively mounted on the two transverse travel mechanisms. Specifically, each end of the fuselage 100 in the length direction is mounted on one transverse travel mechanism through two transverse lifting mechanisms, that is, the two transverse travel mechanisms are respectively connected to the side pile fuselage 120 and the boom seat 130.

[0030] like Figures 1 to 3As shown, the transverse travel mechanism includes a transverse shoe 210, a transverse travel trolley 220, a transverse travel cylinder 230 and a transverse guide rail 240. The transverse shoe 210 is supported on the ground. The transverse shoe 210 is a long strip structure. One end of the transverse travel cylinder 230 is hinged on the transverse shoe 210, and the other end is connected to the transverse travel trolley 220. The transverse travel cylinder 230 connects and drives the transverse travel trolley 220 to move back and forth in a straight line in a direction parallel to the length of the transverse shoe 210. The transverse guide rail 240 guides the movement of the transverse travel trolley 220 and prevents the transverse travel trolley 220 from separating from the transverse guide rail 240, so that the movement of the transverse travel trolley 220 is smoother. A ball head seat is provided on the transverse travel trolley 220, and the transverse shoe lifting mechanism is connected to the ball head seat. Preferably, each transverse travel mechanism includes two transverse travel trolleys 220 and two transverse travel cylinders 230. The two transverse travel cylinders 230 are respectively connected to and drive the two transverse travel trolleys 220. The two transverse travel trolleys 220 are located on the same transverse guide rail 240, that is, the two transverse travel trolleys 220 reciprocate along the same straight line. The two transverse travel trolleys 220 are located between the two transverse travel cylinders 230, and the two transverse travel cylinders 230 are symmetrically arranged at both ends of the length direction of the transverse shoe 210.

[0031] Each traverse walking trolley 220 is connected to a traverse shoe lifting mechanism, which includes a traverse shoe lifting cylinder 410 and a traverse shoe lifting ball head. One end of the traverse shoe lifting cylinder 410 is installed on the fuselage 100, and the other end is connected to the traverse shoe lifting ball head. The traverse shoe lifting ball head is connected to the ball head seat on the traverse walking trolley 220. Each traverse walking trolley 220 is connected to the fuselage 100 through a traverse shoe lifting mechanism. Further, the traverse shoe lifting cylinder 410 includes a cylinder barrel and a piston rod. The cylinder barrel of the traverse shoe lifting cylinder 410 is installed on the fuselage 100, and one end of the piston rod of the traverse shoe lifting cylinder 410 is connected to the traverse shoe lifting ball head. The cross shoe lifting ball head is spherical, and the ball head seat on the cross shoe trolley 220 and the cross shoe lifting ball head form a spherical fit, so that the cross shoe lifting oil cylinder 410 can rotate relative to the cross shoe trolley 220, which is convenient for the machine body 100 connected to the cross shoe lifting oil cylinder 410 to rotate and turn relative to the cross shoe trolley 220. The above ball head connection structure can also adapt to harsh working conditions such as uneven construction sites and machine sinking. The cross shoe trolley 220 can adaptably rotate relative to the cross shoe lifting ball head to drive the cross shoe 210 to adapt to uneven road surfaces, preventing one end of the cross shoe 210 from tilting and inserting into the foundation due to uneven road surfaces.

[0032] From the above, the cross shoe lifting cylinder 410 can drive the fuselage 100 and the cross shoe 210 to move away from or close to each other, thereby lifting the fuselage 100 and the cross shoe 210. At the same time, the cross shoe trolley 220 can drive the fuselage 100 to move along the length direction of the cross shoe 210.

[0033] like Figure 1As shown, there are two longitudinal walking mechanisms, which are located between the two transverse walking mechanisms, and the two longitudinal walking mechanisms are respectively connected to the two ends of the width direction of the fuselage 100. The longitudinal walking mechanism includes a longitudinal shoe lower box 310, a longitudinal shoe upper box 320, a longitudinal walking trolley 330 and a longitudinal walking cylinder 340. The longitudinal shoe lower box 310 is a plate-like structure as a whole. The longitudinal shoe upper box 320 is rotatably mounted on the longitudinal shoe lower box 310. Specifically, there is a ball head seat in the middle of the bottom surface of the longitudinal shoe upper box 320, and a central axis is connected to the middle of the top surface of the longitudinal shoe lower box 310. The lower end of the central axis is connected to the middle of the top surface of the longitudinal shoe lower box 310, and a ball head is provided at the upper end. The ball head and the ball head seat on the bottom surface of the longitudinal shoe upper box 320 are spherically matched, so that the longitudinal shoe lower box 310 and the longitudinal shoe upper box 320 can rotate relative to each other. Furthermore, the ball head seat on the bottom surface of the longitudinal shoe upper case 320 is embedded in the longitudinal shoe upper case 320. In other words, a groove is provided on the bottom surface of the longitudinal shoe upper case 320, and the ball head seat is arranged in the groove. After the central axis ball head of the longitudinal shoe lower case 310 and the spherical surface of the ball head seat on the bottom surface of the longitudinal shoe upper case 320 are matched, the top surface of the longitudinal shoe lower case 310 and the bottom surface of the longitudinal shoe upper case 320 are in contact, so that the longitudinal shoe upper case 320 can rotate relative to the longitudinal shoe lower case 310 around the central axis without shaking. In order to reduce the friction damage when the longitudinal shoe lower case 310 and the longitudinal shoe upper case 320 rotate relative to each other, friction reducing strips 311 are provided at both ends of the top surface of the longitudinal shoe lower case 310.

[0034] Each longitudinal walking mechanism is provided with two longitudinal walking trolleys 330, and a guide groove is provided on the longitudinal shoe upper box 320. The two longitudinal walking trolleys 330 are located in the guide groove and move along the length direction of the guide groove. The guide groove can limit the longitudinal walking trolley 330 so that the longitudinal walking trolley 330 can only move along the length direction of the guide groove, preventing the longitudinal walking trolley 330 from escaping from the guide groove. Specifically, the guide groove is a groove with a trapezoidal or rectangular cross-section. Limiting protrusions are provided on both sides of the entrance of the guide groove to prevent the longitudinal walking trolley 330 from escaping from the guide groove. The length direction of the guide groove is the length direction of the longitudinal shoe upper box 320.

[0035] The longitudinal travel oil cylinder 340 is installed on the longitudinal shoe upper box 320, and the longitudinal travel oil cylinder 340 is connected to and drives the longitudinal travel trolley 330 to move back and forth in a straight line. There are two longitudinal travel oil cylinders 340, and the two longitudinal travel oil cylinders 340 are respectively connected to two longitudinal travel trolleys 330. The two longitudinal travel trolleys 330 are located between the two longitudinal travel oil cylinders 340, and the two longitudinal travel oil cylinders 340 are symmetrically arranged at both ends of the longitudinal shoe upper box 320 in the length direction.

[0036] Each longitudinal walking trolley 330 is connected to a longitudinal shoe lifting mechanism, and the longitudinal shoe lifting mechanism includes a longitudinal shoe lifting cylinder 520. One end of the fuselage 100 in the width direction is connected to a leg 160, one end of the leg 160 is connected to the fuselage 100, and the other end is beyond the fuselage 100. Specifically, one end of the leg 160 is inserted into the leg hinge seat of the fuselage 100. One end of the longitudinal shoe lifting cylinder 520 is installed on the end of the leg 160 that exceeds the fuselage 100, and the other end of the longitudinal shoe lifting cylinder 520 is connected to the longitudinal walking trolley 330. Preferably, the cylinder barrel of the longitudinal shoe lifting cylinder 520 is installed on the leg 160, and the piston rod of the longitudinal shoe lifting cylinder 520 is connected to the longitudinal shoe lifting ball head, and the longitudinal shoe lifting ball head and the ball head seat on the longitudinal walking trolley 330 are spherically matched and connected. After connection, the length direction of the longitudinal shoe upper box 320 is consistent with the length direction of the fuselage 100, and the two are basically parallel.

[0037] Leg hinge seat Figure 4 and 5As shown, it includes a side plate 151, a support plate 152, a reinforcing beam 153, a limiting shaft 154, a hoop 155 and a reinforcing plate 156. The side plate 151 and the support plate 152 are both plate-like structures. The side plate 151 is connected to the fuselage 100. There are two side plates 151, which are arranged in parallel and spaced apart. The plane where the side plates 151 are located is perpendicular to the length direction of the fuselage 100. There are two support plates 152, which are arranged in parallel and spaced apart. The support plates 152 and the side plates 151 are perpendicular. The two ends of one support plate 152 are respectively connected to the upper ends of the two side plates 151, and the two ends of the other support plate 152 are respectively connected to the lower ends of the two side plates 151. In this way, the two side plates 151 and the two support plates 152 are connected to form the four sides of a rectangular parallelepiped. The fuselage 100 blocks one of the remaining two sides, and the last side has no covering to form the entrance of the support leg 160. There are also two reinforcing beams 153, and the two ends of the reinforcing beams 153 are respectively connected to the two side panels 151. Two supporting plates 152 are located between the two reinforcing beams 153. The two ends of the limiting shaft 154 are respectively detachably connected to the two supporting plates 152. Preferably, the length direction of the limiting shaft 154 is perpendicular to the length direction of the fuselage 100. When the leg 160 is connected to the fuselage, one end of the leg 160 is inserted between the two supporting plates 152, and then the limiting shaft 154 passes through the supporting plate 152 and one end of the leg 160, so that the leg 160 is connected to the fuselage 100 and is limited by the limiting shaft 154. There are also two reinforcing plates 156, and the two reinforcing plates 156 are respectively connected to the two side panels 151, which play a role in strengthening the stability of the side panels 151. The hoop 155 surrounds the end of the leg hinge seat close to the entrance of the leg 160, and does not interfere with the insertion of the leg 160. The reinforcing beam 153 is also connected to one end of the side plate 151 near the inlet of the leg 160. The reinforcing beam 153 plays a role in reinforcing the overall stability and strength of the side plate 151 and the leg hinge seat. The reinforcing beam 153 and the hoop 155 are both located at one end near the inlet of the leg 160, because the inlet end is subjected to greater force.

[0038] In this embodiment, four longitudinal shoe lifting mechanisms and four legs 160 are provided, the four legs 160 are respectively arranged at both ends of the width direction of the fuselage 100, and the four longitudinal shoe lifting mechanisms are respectively connected to the four legs 160. In addition, the oil cylinder stroke of the longitudinal shoe lifting mechanism is relatively large, which facilitates the pile driver to get out of trouble smoothly when the pile driver is seriously trapped.

[0039] Based on the above structure, the fuselage 100 can realize lateral walking, longitudinal walking and turning, wherein the longitudinal walking direction is perpendicular to the lateral walking direction.

[0040] When walking horizontally, in the first step, the transverse shoe 210 is supported on the ground, and the lower box body 310 of the longitudinal shoe and the upper box body 320 of the longitudinal shoe are lifted and leave the ground by the longitudinal shoe lifting mechanism; in the second step, the transverse walking cylinder 230 drives the transverse walking trolley 220. At this time, the transverse walking trolleys 220 on the two transverse walking mechanisms move relative to the ground in the first direction, the transverse shoe 210 is stationary relative to the ground, and the transverse walking trolley 220 drives the fuselage 100 and the longitudinal walking mechanism to move synchronously; in the third step, the longitudinal shoe lifting mechanism drives the lower box body 310 and the upper box body 320 of the longitudinal shoe to descend and be supported on the ground again; in the fourth step, the transverse shoe lifting mechanism drives the transverse shoe 210 to lift off the ground; in the fifth step, the transverse walking cylinder 230 is started to move the transverse shoe 210 relative to the transverse walking trolley 220. At this time, the transverse shoe 210 moves relative to the ground in the first direction, and the position of the transverse walking trolley 220 relative to the ground remains unchanged. In this way, the fuselage 100 can move horizontally in one step.

[0041] The longitudinal walking principle is the same as the transverse walking principle. At this time, the transverse walking mechanism is only lifted or lowered, and the longitudinal walking trolley 330 of the longitudinal walking mechanism moves relative to the longitudinal lower box 310 or the longitudinal upper box 320 to complete the longitudinal walking.

[0042] When turning, the lateral travel trolley 220 on one lateral travel mechanism moves in a first direction relative to the ground, and the lateral travel trolley 220 on the other lateral travel mechanism moves in a second direction relative to the ground, and the first direction and the second direction are opposite. At this time, the fuselage 100 will rotate, driving the longitudinal upper box 320 to rotate synchronously, and the longitudinal upper box 320 rotates around the central axis with the longitudinal lower box 310. This steering operation can help the pile driver to further adjust the position, so that the pile driving mechanism is more accurately located above the entrance of the pile foundation, so that the pile foundation can be accurately pushed into the pile foundation hole during subsequent pile driving.

[0043] Furthermore, the fuselage 100 is also provided with a reset member 140, which is used to reset the longitudinal track lower box 310 and the longitudinal track upper box 320, so that the length direction of the longitudinal track lower box 310 is restored to be parallel to the length direction of the longitudinal track upper box 320. The two ends of the reset member 140 are respectively connected to the fuselage 100 and the longitudinal track lower box 310, and the reset member 140 is elastic. After the above-mentioned steering operation, the length direction of the longitudinal track upper box 320 remains parallel to the length direction of the fuselage 100, and the longitudinal track upper box 320 rotates relative to the longitudinal track lower box 310 until the two form a non-zero angle, that is, the length direction of the longitudinal track upper box 320 is not parallel to the longitudinal track lower box 310, and the reset member 140 is stretched, and the longitudinal track lower box 310 and the transverse track 210 are supported on the ground to perform the pile pressing operation. After the pile pressing operation is completed, the pile driver needs to move to other pile foundation holes for pile pressing. As can be seen from the above, during the movement, the longitudinal shoe lower box 310 and the longitudinal shoe upper box 320 need to be lifted. At this time, there is an angle between the longitudinal shoe upper box 320 and the longitudinal shoe lower box 310. The longitudinal shoe lower box 310 is not parallel to the length direction of the fuselage 100. When the longitudinal shoe lower box 310 is lifted, it may interfere with the fuselage 100. Therefore, it is necessary to first reset the longitudinal shoe lower box 310 and the longitudinal shoe upper box 320 to restore the longitudinal shoe lower box 310 to be parallel to the length direction of the fuselage 100. During reset, the transverse travel cylinder 230 releases the force on the transverse travel trolley 220. The fuselage 100 loses the force of the transverse travel cylinder 230 and is acted upon by the reset member 140. Under the force of the reset member 140, the fuselage 100 and the longitudinal shoe upper box 320 rotate as a whole relative to the longitudinal shoe lower box 310 until the longitudinal shoe lower box 310 and the fuselage 100 are parallel in length, and the elastic potential energy stored in the reset member 140 is completely released.

[0044] Furthermore, a notch is provided on the inner side of the cross shoe 210, and the inner side of the cross shoe 210 refers to the side of one cross shoe 210 facing the other cross shoe 210. In this way, the distance between the pile foundation entrance on the inner side of the cross shoe 210 and the obstacle (such as a wall) on the outer side of the cross shoe 210 can be reduced, which is conducive to more effective use of land resources.

[0045] The length direction of the counterweight beam 600 is parallel to the length direction of the fuselage 100 . There are multiple counterweight beams 600 , and the counterweight beams 600 are symmetrically arranged at both ends of the fuselage 100 in the width direction.

[0046] Finally, it is necessary to explain here that the above embodiments are only used to further illustrate the technical solution of the utility model in detail and cannot be understood as limiting the protection scope of the utility model. Some non-essential improvements and adjustments made by technicians in this field based on the above content of the utility model belong to the protection scope of the utility model.

Claims

1. A chassis travel and steering mechanism of a hydraulic static pile driver, characterized in that: The invention comprises a machine body (100), two transverse walking mechanisms, two longitudinal walking mechanisms, two transverse shoe lifting mechanisms and two longitudinal shoe lifting mechanisms. The two transverse walking mechanisms are arranged in parallel and at intervals. The two ends of the machine body (100) in the length direction are respectively mounted on the two transverse walking mechanisms. The transverse walking mechanisms comprise transverse shoes (210), two transverse walking trolleys (220) and two transverse walking oil cylinders (230). The two transverse walking oil cylinders (230) are symmetrically arranged at the two ends of the transverse shoes (210) in the length direction. The two transverse walking oil cylinders (230) are respectively connected to and drive the two transverse walking trolleys (220) to move in the same straight line. Each end of the machine body (100) in the length direction is respectively articulated to the two transverse walking trolleys (220) through the two transverse shoe lifting mechanisms. The transverse shoe lifting mechanisms drive the machine body (100) and the transverse walking trolley (220) to move relative to each other. The two longitudinal walking trolleys (220) are respectively articulated to the two transverse walking trolleys (220). The travel mechanism is located between the two transverse travel mechanisms, the two longitudinal travel mechanisms are respectively connected to the two ends of the fuselage (100) in the width direction, the longitudinal travel mechanism comprises a longitudinal shoe lower box (310), a longitudinal shoe upper box (320), two longitudinal travel trolleys (330) and two longitudinal travel cylinders (340), the longitudinal shoe upper box (320) is rotatably mounted on the longitudinal shoe lower box (310), the two longitudinal travel cylinders (340) are symmetrically arranged at the two ends of the longitudinal shoe upper box (320) in the length direction, the two longitudinal travel cylinders (340) are respectively connected to and drive the two longitudinal travel trolleys (330) to move in the same straight line, each end of the fuselage (100) in the width direction is respectively articulated to the two longitudinal travel trolleys (330) through two longitudinal shoe lifting mechanisms, and the longitudinal shoe lifting mechanisms drive the fuselage (100) and the longitudinal travel trolley (330) to move relative to each other.

2. The chassis travel and steering mechanism according to claim 1, characterized in that: Both ends of the fuselage (100) in the width direction are connected to legs (160), one end of the legs (160) is connected to the fuselage (100), and the other end protrudes from the fuselage (100), one end of the longitudinal shoe lifting cylinder (520) is installed on the end of the legs (160) protruding from the fuselage (100), and the other end of the longitudinal shoe lifting cylinder (520) is connected to the longitudinal shoe walking trolley (330).

3. The chassis travel and steering mechanism according to claim 2, characterized in that: The leg (160) is connected to the fuselage (100) via a leg hinge seat, wherein the leg hinge seat comprises a side plate (151), a support plate (152), a reinforcing beam (153), a limiting shaft (154), and a hoop (155); the side plate (151) and the support plate (152) are both plate-shaped structures connected to the fuselage (100); two side plates (151) are provided, the two side plates (151) are arranged in parallel and spaced apart, and the plane where the side plates (151) are located is perpendicular to the length direction of the fuselage (100); two support plates (152) are provided, the two support plates (152) are arranged in parallel and spaced apart, the support plates (152) and the side plates (151) are perpendicular, and two ends of one support plate (152) are respectively connected to the two side plates (151) The upper end of the supporting plate (152) is connected to the lower ends of the two side plates (151) at two ends, two reinforcing beams (153) are also provided, and the two ends of the reinforcing beam (153) are connected to the two side plates (151) at two ends, and the two ends of the limiting shaft (154) are connected to the two supporting plates (152) at two ends. When the supporting leg (160) is connected to the fuselage, one end of the supporting leg (160) is inserted between the two supporting plates (152), and the limiting shaft (154) passes through the supporting plate (152) and one end of the supporting leg (160). The hoop (155) surrounds one end of the supporting leg hinge seat close to the entrance of the supporting leg (160), and the reinforcing beam (153) is also connected to one end of the side plate (151) close to the entrance of the supporting leg (160).

4. The chassis travel and steering mechanism according to claim 1, characterized in that: The cross shoe (210) is supported on the ground and is a long strip structure. The moving direction of the cross shoe trolley (220) is parallel to the length direction of the cross shoe (210).

5. The chassis travel and steering mechanism according to claim 1, characterized in that: The transverse walking mechanism also includes a transverse guide rail (240) installed on the transverse shoe (210), and the two transverse walking carriages (220) move along the transverse guide rail (240).

6. The chassis travel and steering mechanism according to claim 1, characterized in that: The transverse shoe lifting mechanism comprises a transverse shoe lifting oil cylinder (410) and a transverse shoe lifting ball head. One end of the transverse shoe lifting oil cylinder (410) is mounted on the machine body (100) and the other end is connected to the transverse shoe lifting ball head. A ball head seat is provided on the transverse shoe trolley (220). The ball head seat and the ball head spherical surface of the ball head on the transverse shoe lifting oil cylinder (410) are matched.

7. The chassis travel and steering mechanism according to claim 1, characterized in that: The longitudinal shoe lifting mechanism comprises a longitudinal shoe lifting oil cylinder (520), the cylinder barrel of the longitudinal shoe lifting oil cylinder (520) is installed on the support leg (160), the piston rod of the longitudinal shoe lifting oil cylinder (520) is connected to the longitudinal shoe lifting ball head, and the longitudinal shoe lifting ball head is spherically matched with the ball head seat on the longitudinal shoe walking trolley (330).

8. The chassis travel and steering mechanism according to claim 1, characterized in that: Friction reducing strips (311) are provided at both ends of the top surface of the longitudinal shoe lower layer box body (310), and the friction reducing strips (311) are in direct contact with the bottom surface of the longitudinal shoe upper layer box body (320).

9. The chassis travel and steering mechanism according to claim 1, characterized in that: The chassis walking and steering mechanism also includes a reset member (140) for resetting the lower box body (310) of the longitudinal track, the two ends of the reset member (140) are respectively connected to the machine body (100) and the lower box body (310) of the longitudinal track, and the reset member (140) is elastic.

10. The chassis travel and steering mechanism according to claim 1, characterized in that: The fuselage (100) comprises a middle part (110), a side pile fuselage (120) and a boom base (130), and the side pile fuselage (120), the middle part (110) and the boom base (130) are connected in sequence along the length direction of the fuselage (100).

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