A pile driver for traffic engineering

Abstract

The present invention relates to the technical field of pile drivers, and specifically to a pile driver used in traffic engineering, comprising a vehicle body and a vibration mechanism; the vibration mechanism comprises a support frame; a vibration box is slidably mounted on the support frame; a vibration spring is connected between the vibration box and the support frame; a pile column limit assembly is provided at the lower end of the vibration box; a polarization assembly comprises a rotating shaft, a top ring, and a graphite sleeve block; an eccentric wheel is fixed on the rotating shaft; and elastic limit assemblies are provided at both ends of the rotating shaft. When piling is being performed, the elastic limit assembly makes the fitting wall of the graphite sleeve block fit with the rotating shaft to provide rotation support for the rotation of the rotating shaft. When the rotating shaft is worn and a gap exists between the rotating shaft and the fitting wall, the elastic limit assembly squeezes the graphite sleeve block to keep the fitting wall and the rotating shaft in contact, thereby reducing the shaking of the rotating shaft relative to the vibration box when rotating.

Description

Technical Field

[0001] The invention relates to the technical field of pile drivers, and in particular to a pile driver used in traffic engineering. Background Art

[0002] A pile driver is a basic construction machine used in construction projects such as buildings, bridges, ports, and roads. In transportation projects, pile drivers are a key construction equipment, mainly used for pile foundation construction in infrastructure construction such as roads, bridges, ports, and airports. Pile drivers include vibration pile drivers and impact pile drivers. Among them, a vibration pile driver is a construction machine that uses the principle of vibration to sink pile bodies (such as steel pipes, concrete piles, wooden piles, etc.) into the ground. The vibration pile sinking of a vibration pile driver is mainly achieved through an exciter. The working principle of the exciter is to use a hydraulic motor to drive the active shaft to rotate. Through eccentric rotation, the exciter generates a longitudinal exciting force and transmits the vibration to the pile body through the pile clamp. The pile-soil vibration is used to reduce the pile-soil friction and pile end resistance, so that the pile can be easily sunk into the soil.

[0003] In the prior art, for example, the Chinese patent with announcement number CN215829416U, entitled A vibrator and pile driver with vertically arranged eccentric blocks, states in the public technical solution that the main eccentric assembly and the auxiliary eccentric assembly are distributed up and down, and have basically the same structure. The main transmission shaft is usually rotatably installed in the vibrator housing through rotating parts such as bearings. The main eccentric block is sleeved on the outer periphery of the main transmission shaft, and the main gear is sleeved on the outer periphery of the main eccentric block and meshes with the auxiliary gear sleeve of the auxiliary eccentric assembly. The rotation of the main transmission shaft drives the auxiliary transmission shaft to rotate, and drives the main eccentric block and the auxiliary eccentric block to rotate to generate vibration. However, when the vibrating pile driver is working, due to the eccentric setting of the eccentric block, the force on the transmission shaft in the circumferential direction is not uniform when it rotates, which easily causes wear of the transmission shaft and the bearing, so that the transmission shaft shakes relative to the housing when it rotates, thereby causing further wear of the transmission shaft, so that the transmission shaft needs to be frequently replaced and maintained, affecting the working efficiency of the pile driver. Summary of the invention

[0004] The present invention provides a pile driver for traffic engineering to solve the above problems.

[0005] A pile driver for traffic engineering of the present invention adopts the following technical scheme: a pile driver for traffic engineering comprises a vehicle body and a vibration mechanism; a telescopic arm is provided on the vehicle body; a hook is hung on the end of the telescopic arm away from the vehicle body through a steel cable; the vibration mechanism is arranged below the hook, comprising a support frame; a lifting ring is hinged on the upper end of the support frame; the lifting ring is hung on the hook; a vibration box is installed on the support frame so as to slide up and down; a vibration spring is connected between the vibration box and the support frame; a pile column limiting assembly is provided at the lower end of the vibration box; the pile column limiting assembly is used to limit the upper end of the pile column to the lower end of the vibration box; a plurality of polarization assemblies are arranged in the vibration box; the polarization assembly comprises a rotating shaft, a top ring, and a graphite shaft sleeve block; the axis of the rotating shaft is arranged horizontally; the rotating shaft is rotatably installed in the vibration box, and the two ends of the rotating shaft extend to the outside of the vibration box; an eccentric wheel is fixed on the rotating shaft; a transmission assembly is arranged between the plurality of polarization assemblies; the transmission assembly The component is used to drive the rotating shaft of multiple polarization components to drive the eccentric wheel to rotate; there are two top rings, which are distributed at both ends of the rotating shaft; the top ring is arranged on the outside of the vibration box; the top ring is coaxially fixed on the side wall of the end of the rotating shaft; there are multiple graphite sleeve blocks, which are evenly distributed at the end of the rotating shaft along the circumferential direction of the rotating shaft and are located on the side of the top ring away from the vibration box; the end wall of the graphite sleeve block close to the rotating shaft is set as a fitting wall; the fitting wall is an arc shape fitting with the side wall of the rotating shaft; the graphite sleeve block and the end of the top ring away from the center of the vibration box are abutted; elastic limiting components are provided at both ends of the rotating shaft; the elastic limiting components are used to make the fitting wall of the graphite sleeve block fit with the rotating shaft to provide rotation support for the rotation of the rotating shaft. When the rotating shaft is worn and a gap exists between the rotating shaft and the fitting wall, the elastic limiting component squeezes the graphite sleeve block to keep the fitting wall and the rotating shaft in contact, thereby reducing the shaking of the rotating shaft relative to the vibration box when rotating.

[0006] Furthermore, mounting tubes are coaxially sleeved at both ends of the rotating shaft; one end of the mounting tube close to the vibration box is fixed to the outer wall of the vibration box; the graphite shaft sleeve block is arranged in the mounting tube; one end of the mounting tube away from the vibration box is bolted with an end cover; the end cover is used for dust prevention.

[0007] Furthermore, an elastic limiting assembly is arranged in the mounting tube and on the side of the graphite sleeve block away from the top ring; a mechanical sealing assembly is arranged between the elastic limiting assembly and the end cover; the mechanical sealing assembly is used to assist the end cover in sealing the mounting tube to prevent dust from entering between the rotating shaft and the graphite sleeve block.

[0008] Further, the mechanical seal assembly includes a sealing cover; the sealing cover is annular; the sealing cover is fixed on the mounting cylinder and sleeved on the rotating shaft; a matching groove is provided on the end face of the sealing cover close to the top ring; a stationary ring is coaxially provided on the side of the sealing cover close to the top ring; a matching convex is provided on the end face of the stationary ring close to the sealing cover; the matching convex and the matching groove are interference fit; a moving ring is coaxially provided on the side of the stationary ring close to the top ring; the moving ring is sleeved on the rotating shaft; the moving ring and the stationary ring abut against each other; a sealing chamber is provided between the moving ring and the stationary ring; sealing oil is provided in the sealing chamber; a sealing oil film is formed between the abutting surfaces of the moving ring and the stationary ring.

[0009] Furthermore, the end wall of the graphite sleeve block away from the rotating shaft is set as a matching outer wall; the matching outer wall is a conical wall with one end close to the top ring away from the axis of the rotating shaft and the other end away from the top ring close to the axis of the rotating shaft; a thread is provided on the matching outer wall; the elastic limit assembly includes a limiting sleeve; the limiting sleeve is arranged on the side of the moving ring close to the top ring; the limiting sleeve is annular; the outer wall of the limiting sleeve abuts against the inner wall of the mounting tube; the inner wall of the limiting sleeve is set as a matching inner wall; the matching inner wall is a conical wall with one end close to the top ring away from the axis of the rotating shaft and the other end away from the top ring close to the axis of the rotating shaft; a thread is provided on the matching inner wall; the matching inner wall and the matching outer wall threads are matched; a disc spring is provided between the limiting sleeve and the moving ring; one end of the disc spring abuts against the limiting sleeve, and the other end abuts against the moving ring; the disc spring is in a compressed and force-storing state. The disc spring presses the moving ring and the limiting sleeve, so that the fitting wall of the graphite sleeve block and the side wall of the shaft are in close contact, providing rotation support for the rotation of the shaft. When the shaft is worn and there is a gap between the shaft and the fitting wall, causing the shaft to vibrate, the vibration of the shaft plus the push of the limiting sleeve causes the graphite sleeve block to rotate slightly. The disc spring pushes the limiting sleeve and provides a pushing force toward the axis of the shaft through the matching inner wall and the matching outer wall to keep the fitting wall and the shaft in contact, reducing the shaking of the shaft relative to the vibration box when rotating. At the same time, as the polarization component vibrates, the squeezing force of the disc spring on the moving ring periodically increases and then decreases, causing the moving ring to vibrate, which is conducive to the discharge of bubbles in the sealing oil between the moving ring and the static ring, reducing the oxidation and evaporation of the sealing oil.

[0010] Furthermore, there are two polarization components distributed up and down; the large ends of the eccentric wheels of the two polarization components are distributed up and down alternately on both sides of the line connecting the centers of the rotation axes of the two polarization components.

[0011] Furthermore, the transmission assembly includes a transmission wheel; the transmission wheel is fixed on the rotating shaft; the transmission wheels on the rotating shafts of the two polarization assemblies are meshed for transmission; and a motor is connected to one of the rotating shafts.

[0012] Furthermore, the pile column limiting assembly includes two limiting plates; the two limiting plates are arranged vertically and in parallel; the upper ends of the limiting plates are fixed to the lower ends of the vibration box; a limiting gap is formed between the two limiting plates. When in use, the upper end of the pile column is limited in the limiting gap, so that the upper end of the pile column abuts against the vibration box.

[0013] Furthermore, a guide column is fixed on the support frame; the guide column is vertically arranged; the guide column and the vibration box are slidably connected; and the vibration spring is sleeved on the guide column.

[0014] Furthermore, a rubber ring is provided between the matching protrusion and the matching groove.

[0015] The beneficial effects of the present invention are as follows: when piling is being performed, the elastic limiting assembly enables the fitting wall of the graphite sleeve block to fit with the rotating shaft to provide rotational support for the rotation of the rotating shaft; when the rotating shaft is worn and a gap exists between the rotating shaft and the fitting wall, the elastic limiting assembly squeezes the graphite sleeve block to keep the fitting wall and the rotating shaft in fit, thereby reducing the shaking of the rotating shaft relative to the vibration box when rotating.

[0016] Furthermore, when the shaft is worn and a gap exists between the shaft and the fitting wall, causing the shaft to vibrate, the shaft vibration plus the push of the limiting sleeve causes the graphite sleeve block to rotate slightly, and the disc spring pushes the limiting sleeve and provides a pushing force toward the axis of the shaft through the matching inner wall and the matching outer wall to the graphite sleeve block, so that the fitting wall and the shaft remain in contact, reducing the shaking of the shaft relative to the vibration box when rotating. At the same time, as the polarization component vibrates, the squeezing force of the disc spring on the moving ring periodically increases and then decreases, causing the moving ring to vibrate, which is conducive to the discharge of bubbles in the sealing oil between the moving ring and the static ring, reducing the oxidation and evaporation of the sealing oil, extending the maintenance and replacement interval, and improving the use efficiency of the pile driver. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 It is a structural schematic diagram of an embodiment of a pile driver for traffic engineering of the present invention;

[0019] Figure 2 A schematic diagram of a vibration mechanism of an embodiment of a pile driver for traffic engineering of the present invention;

[0020] Figure 3 for Figure 2 Sectional view at AA in the middle;

[0021] Figure 4 for Figure 3 The enlarged view of point B in the middle;

[0022] Figure 5 A side view of a vibration mechanism of an embodiment of a pile driver for traffic engineering of the present invention;

[0023] Figure 6 for Figure 5 Sectional view at CC;

[0024] Figure 7 for Figure 5 Sectional view at DD in the middle;

[0025] Figure 8 for Figure 7 Enlarged view of point E in the middle.

[0026] In the figure: 100, vehicle body; 200, support frame; 210, lifting ring; 300, vibration box; 310, limit plate; 320, vibration spring; 330, mounting tube; 340, end cover; 410, eccentric wheel; 420, rotating shaft; 421, top ring; 430, transmission wheel; 440, motor; 500, graphite bushing block; 600, limiting sleeve; 700, disc spring; 810, cover; 820, static ring; 830, dynamic ring. DETAILED DESCRIPTION

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] An embodiment of a pile driver for traffic engineering of the present invention is as follows Figures 1 to 8 As shown: a pile driver used in traffic engineering, including a vehicle body 100 and a vibration mechanism; a telescopic arm is provided on the vehicle body 100; and a hook is hung at the end of the telescopic arm away from the vehicle body 100 through a steel cable.

[0029] The vibration mechanism is arranged below the hook, and includes a support frame 200; a lifting ring 210 is hinged at the upper end of the support frame 200; the lifting ring 210 is hung on the hook; a guide column is fixed on the support frame 200; the guide column is arranged vertically; the guide column and the vibration box 300 are slidably connected; the vibration box 300 is installed on the support frame 200 so as to slide up and down; a vibration spring 320 is connected between the vibration box 300 and the support frame 200; the vibration spring 320 is sleeved on the guide column. A pile column limiting assembly is arranged at the lower end of the vibration box 300; the pile column limiting assembly is used to limit the upper end of the pile column at the lower end of the vibration box 300; a polarization assembly is arranged in the vibration box 300; the pile column limiting assembly includes two limiting plates 310; the two limiting plates 310 are arranged vertically and in parallel; the upper end of the limiting plate 310 is fixed to the lower end of the vibration box 300; a limiting gap is formed between the two limiting plates 310. When in use, the upper end of the pile column is limited in the limiting gap, so that the upper end of the pile column and the vibration box 300 are in contact.

[0030] The polarization component includes a rotating shaft 420, a top ring 421, and a graphite sleeve block 500; the axis of the rotating shaft 420 is arranged horizontally; the rotating shaft 420 is rotatably installed in the vibration box 300, and the two ends of the rotating shaft 420 extend to the outside of the vibration box 300; an eccentric wheel 410 is fixed on the rotating shaft 420; there are two polarization components distributed up and down; the large ends of the eccentric wheels 410 of the two polarization components are staggered up and down on both sides of the line connecting the centers of the rotating shafts 420 of the two polarization components. A transmission component is arranged between the two polarization components; the transmission component is used to drive the rotating shafts 420 of the two polarization components to drive the eccentric wheels 410 to rotate; the transmission component includes a transmission wheel 430; the transmission wheel 430 is fixed on the rotating shaft 420; the transmission wheels 430 on the rotating shafts 420 of the two polarization components are meshed for transmission; and a motor 440 is connected to one of the rotating shafts 420.

[0031] There are two top rings 421, which are distributed at both ends of the rotating shaft 420; the top ring 421 is arranged on the outside of the vibration box 300; the top ring 421 is coaxially fixed on the side wall of the end of the rotating shaft 420; there are multiple graphite sleeve blocks 500, which are evenly distributed at the end of the rotating shaft 420 along the circumferential direction of the rotating shaft 420, and are located on the side of the top ring 421 away from the vibration box 300; the end wall of the graphite sleeve block 500 close to the rotating shaft 420 is set as a fitting wall; the fitting wall is an arc shape that fits the side wall of the rotating shaft 420; the graphite sleeve block 500 and the end of the top ring 421 away from the center of the vibration box 300 are abutted; the end wall of the graphite sleeve block 500 away from the rotating shaft 420 is set as a matching outer wall; the matching outer wall is a conical wall with one end close to the top ring 421 away from the axis of the rotating shaft 420 and the end away from the top ring 421 close to the axis of the rotating shaft 420; threads are provided on the matching outer wall.

[0032] A mounting tube 330 is coaxially sleeved at both ends of the rotating shaft 420; one end of the mounting tube 330 close to the vibration box 300 is fixed to the outer wall of the vibration box 300; a graphite sleeve block 500 is arranged in the mounting tube 330; an end of the mounting tube 330 away from the vibration box 300 is bolted with an end cover 340; the end cover 340 is used for dust prevention.

[0033] Both ends of the rotating shaft 420 are provided with elastic limit assemblies; the elastic limit assemblies are arranged in the installation cylinder 330 and on the side of the graphite sleeve block 500 away from the top ring 421; the elastic limit assemblies are used to make the fitting wall of the graphite sleeve block 500 fit with the rotating shaft 420 to provide rotation support for the rotation of the rotating shaft 420. When the rotating shaft 420 is worn and there is a gap between the rotating shaft 420 and the fitting wall, the elastic limit assemblies squeeze the graphite sleeve block 500 to keep the fitting wall and the rotating shaft 420 in contact, thereby reducing the shaking of the rotating shaft 420 relative to the vibration box 300 when the rotating shaft 420 rotates. A mechanical seal assembly is arranged between the elastic limit assemblies and the end cover 340.

[0034] The mechanical seal assembly is used to assist the end cover 340 in sealing the mounting cylinder 330 to prevent dust from entering between the rotating shaft 420 and the graphite sleeve block 500. The mechanical seal assembly includes a cover 810; the cover 810 is annular; the cover 810 is fixed on the mounting cylinder 330 and sleeved on the rotating shaft 420; a matching groove is provided on the end surface of the cover 810 close to the top ring 421; a stationary ring 820 is coaxially provided on one side of the cover 810 close to the top ring 421; a matching convex is provided on the end surface of the stationary ring 820 close to the cover 810; the matching convex and the matching groove are interference fit; a rubber ring is provided between the matching convex and the matching groove. A moving ring 830 is coaxially provided on one side of the stationary ring 820 close to the top ring 421; the moving ring 830 is sleeved on the rotating shaft 420; the moving ring 830 abuts against the stationary ring 820; a sealing cavity is provided between the moving ring 830 and the stationary ring 820; sealing oil is provided in the sealing cavity; a sealing oil film is formed between the abutting surfaces of the moving ring 830 and the stationary ring 820.

[0035] The elastic limiting assembly includes a limiting sleeve 600; the limiting sleeve 600 is arranged on the side of the moving ring 830 close to the top ring 421; the limiting sleeve 600 is annular; the outer wall of the limiting sleeve 600 abuts against the inner wall of the mounting tube 330; the inner wall of the limiting sleeve 600 is arranged as a matching inner wall; the matching inner wall is a conical wall with one end close to the top ring 421 away from the axis of the rotating shaft 420 and the other end away from the top ring 421 close to the axis of the rotating shaft 420; threads are arranged on the matching inner wall; the matching inner wall and the matching outer wall threads are matched; a disc spring 700 is arranged between the limiting sleeve 600 and the moving ring 830; one end of the disc spring 700 abuts against the limiting sleeve 600, and the other end abuts against the moving ring 830; the disc spring 700 is in a compressed and force-accumulating state. The disc spring 700 presses the moving ring 830 and the limiting sleeve 600, so that the fitting wall of the graphite shaft sleeve block 500 and the side wall of the rotating shaft 420 are in close contact, so as to provide rotation support for the rotation of the rotating shaft 420. When the rotating shaft 420 is worn and a gap exists between the rotating shaft 420 and the fitting wall, causing the rotating shaft 420 to vibrate, the vibration of the rotating shaft 420 and the push of the limiting sleeve 600 cause the graphite shaft sleeve block 500 to rotate slightly. The disc spring 700 pushes the limiting sleeve 600 and provides a pushing force to the graphite shaft sleeve block 500 toward the axis of the rotating shaft 420 through the matching inner wall and the matching outer wall, so as to keep the fitting wall and the rotating shaft 420 in close contact, thereby reducing the shaking of the rotating shaft 420 relative to the vibration box 300 when rotating. At the same time, as the polarization component vibrates, the squeezing pressure of the disc spring 700 on the dynamic ring 830 periodically increases and then decreases, causing the dynamic ring 830 to vibrate, thereby facilitating the discharge of bubbles in the sealing oil between the dynamic ring 830 and the static ring 820 and reducing oxidation and evaporation of the sealing oil.

[0036] In combination with the above embodiments, the use principle and working process of the present invention are as follows: when piling, the upper end of the pile column is limited in the limit gap, so that the upper end of the pile column abuts against the vibration box 300, and then the motor 440 is started to drive the rotating shaft 420 to rotate, and the rotating shafts 420 of the two polarization components are driven to rotate in opposite directions through the transmission wheel 430. The rotating shaft 420 drives the eccentric wheel 410 to rotate, generating vibration. During this process, the disc spring 700 presses the moving ring 830 and the limiting sleeve 600, so that the fitting wall of the graphite sleeve block 500 and the side wall of the rotating shaft 420 are in close contact, so as to provide rotation support for the rotation of the rotating shaft 420. When the rotating shaft 420 is worn and a gap exists between the rotating shaft 420 and the fitting wall, causing the rotating shaft 420 to vibrate, the vibration of the rotating shaft 420 and the push of the limiting sleeve 600 cause the graphite sleeve block 500 to rotate slightly. The disc spring 700 pushes the limiting sleeve 600 and provides a pushing force to the graphite sleeve block 500 toward the axis of the rotating shaft 420 through the matching inner wall and the matching outer wall, so as to keep the fitting wall and the rotating shaft 420 in close contact, thereby reducing the shaking of the rotating shaft 420 relative to the vibration box 300 when rotating. At the same time, as the polarization component vibrates, the extrusion pressure of the disc spring 700 on the dynamic ring 830 periodically increases and then decreases, causing the dynamic ring 830 to vibrate, thereby facilitating the discharge of bubbles in the sealing oil between the dynamic ring 830 and the static ring 820, reducing the oxidation and evaporation of the sealing oil, extending the maintenance and replacement intervals, and improving the use efficiency of the pile driver.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A pile driver for traffic engineering, characterized in that: It includes a vehicle body and a vibration mechanism; a telescopic arm is provided on the vehicle body; a hook is hung on the end of the telescopic arm away from the vehicle body through a steel cable; The vibration mechanism is arranged below the hook, and includes a support frame; a lifting ring is hinged at the upper end of the support frame; the lifting ring is hung on the hook; a vibration box is mounted on the support frame to slide up and down; a vibration spring is connected between the vibration box and the support frame; a pile column limiting assembly is arranged at the lower end of the vibration box; the pile column limiting assembly is used to limit the upper end of the pile column at the lower end of the vibration box; a plurality of polarization assemblies are arranged in the vibration box; The polarization component includes a rotating shaft, a top ring, and a graphite sleeve block; the axis of the rotating shaft is arranged horizontally; the rotating shaft is rotatably installed in a vibration box, and both ends of the rotating shaft extend to the outside of the vibration box; an eccentric wheel is fixed on the rotating shaft; a transmission component is arranged between the multiple polarization components; the transmission component is used to drive the rotating shafts of the multiple polarization components to drive the eccentric wheel to rotate; There are two top rings, which are distributed at both ends of the rotating shaft; the top rings are arranged outside the vibration box; the top rings are coaxially fixed on the side wall of the end of the rotating shaft; There are multiple graphite sleeve blocks, which are evenly spaced at the end of the rotating shaft along the circumferential direction of the rotating shaft and are located on the side of the top ring away from the vibration box; the end wall of the graphite sleeve block close to the rotating shaft is set as a fitting wall; the fitting wall is in an arc shape fitting with the side wall of the rotating shaft; the end of the graphite sleeve block and the top ring away from the center of the vibration box are in contact; Both ends of the rotating shaft are provided with elastic limit components; the elastic limit components are used to make the fitting wall of the graphite shaft sleeve block fit with the rotating shaft. When the rotating shaft is worn and there is a gap between the rotating shaft and the fitting wall, the elastic limit components squeeze the graphite shaft sleeve block to keep the fitting wall and the rotating shaft fitting; both ends of the rotating shaft are coaxially sleeved with mounting tubes; the end of the mounting tube close to the vibration box is fixed to the outer wall of the vibration box; the graphite shaft sleeve block is arranged in the mounting tube; the end of the mounting tube away from the vibration box is fixed with an end cover; the elastic limit component is arranged The utility model relates to a graphite shaft sleeve block and a graphite shaft sleeve block. The graphite shaft sleeve block is installed in the installation cylinder and is arranged on the side of the graphite shaft sleeve block away from the top ring; a mechanical seal assembly is arranged between the elastic limit assembly and the end cover; the mechanical seal assembly is used to assist the end cover in sealing the installation cylinder to prevent dust from entering between the rotating shaft and the graphite shaft sleeve block; the mechanical seal assembly includes a sealing cover; the sealing cover is annular; the sealing cover is fixed on the installation cylinder and sleeved on the rotating shaft; a matching groove is arranged on the end face of the sealing cover close to the top ring; a static ring is coaxially arranged on the side of the sealing cover close to the top ring; a matching convex is arranged on the end face of the static ring close to the sealing cover; a matching groove ... The engaging convex and the matching groove are interference fit; a moving ring is coaxially provided on the side of the static ring close to the top ring; the moving ring is sleeved on the rotating shaft; the moving ring and the static ring are in contact; a sealing cavity is provided between the dynamic ring and the static ring; sealing oil is provided in the sealing cavity; a sealing oil film is formed between the abutting surfaces of the dynamic ring and the static ring; the end wall of the graphite sleeve block away from the rotating shaft is provided as a matching outer wall; the matching outer wall is a tapered wall with one end close to the top ring away from the axis of the rotating shaft and the other end away from the top ring close to the axis of the rotating shaft; a thread is provided on the matching outer wall; the elastic limit assembly includes Limiting sleeve; the limiting sleeve is arranged on the side of the moving ring close to the top ring; the limiting sleeve is annular; the outer wall of the limiting sleeve abuts against the inner wall of the mounting tube; the inner wall of the limiting sleeve is arranged as a matching inner wall; the matching inner wall is a tapered wall with one end close to the top ring away from the axis of the rotating shaft and the other end away from the top ring close to the axis of the rotating shaft; threads are arranged on the matching inner wall; the matching inner wall and the matching outer wall threads are matched; a disc spring is arranged between the limiting sleeve and the moving ring; one end of the disc spring abuts against the limiting sleeve, and the other end abuts against the moving ring; the disc spring is in a compressed and force-storing state.

2. A pile driver for traffic engineering according to claim 1, characterized in that: There are two polarization components distributed up and down; the large ends of the eccentric wheels of the two polarization components are distributed up and down alternately on both sides of the line connecting the centers of the rotation axes of the two polarization components.

3. A pile driver for traffic engineering according to claim 2, characterized in that: The transmission component comprises a transmission wheel; the transmission wheel is fixed on the rotating shaft; the transmission wheels on the rotating shafts of the two polarization components are meshed for transmission; and a motor is connected to one of the rotating shafts.

4. A pile driver for traffic engineering according to claim 1, characterized in that: The pile column limiting assembly comprises two limiting plates; the two limiting plates are arranged vertically and in parallel; the upper ends of the limiting plates are fixed to the lower end of the vibration box; and a limiting gap is formed between the two limiting plates.

5. A pile driver for traffic engineering according to claim 1, characterized in that: A guide column is fixed on the support frame; the guide column is vertically arranged; the guide column and the vibration box are slidably connected; and the vibration spring is sleeved on the guide column.

6. A pile driver for traffic engineering according to claim 1, characterized in that: A rubber ring is arranged between the matching protrusion and the matching groove.

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