Double-end synchronous oil injection device of hollow rod

Abstract

The utility model relates to the field of hollow rod processing and manufacturing, in particular to a double-end synchronous oiling device of a hollow rod, which comprises an equipment main frame and an oiling mechanism, the oiling mechanism is mounted on the main frame in a sliding manner and comprises a sliding plate, a vertical fixing plate is fixed on the sliding plate in a sliding manner, and the vertical fixing plate is fixed on the equipment main frame. An angle adjusting disc capable of rotating around the axis is arranged on the vertical fixing plate, a turbine speed reducer is fixed to the angle adjusting disc, an air cylinder is fixed to the top end of the turbine speed reducer, the air cylinder is fixed to a lifting fixing plate, and the lifting fixing plate can be adjusted in a lifting mode in the direction perpendicular to the sliding plate. The problems that most devices in the prior art adopt fixed oil injection equipment for single-side oil injection, so that the devices cannot adapt to hollow rods with different parameters, and the application range is small are solved, and the problems that after oil injection is completed on one side, a mechanical arm grabs the hollow rod to be reversed, then oil injection is conducted on the other end, and the oil injection efficiency is low, and positioning is not accurate are solved.

Description

Technical Field

[0001] The utility model relates to the field of hollow rod processing and manufacturing, in particular to a double-head synchronous oiling device for the hollow rod. Background Art

[0002] The car stabilizer bar, also known as the lateral stabilizer bar, is an auxiliary elastic element in the car suspension system. Its main function is to prevent the car body from excessive lateral tilt when turning, thereby preventing the car from tipping over and improving the ride comfort.

[0003] This stabilizer bar is a torsion bar spring made of spring steel, in a "U" shape, usually placed horizontally at the front and rear ends of the car. In the middle of the bar body, it is hinged to the frame with a sleeve, and the two ends of the bar are fixed to the left and right suspensions respectively. When the body only moves vertically, the lateral stabilizer bar will not work because the deformation of the suspension on both sides is the same. However, when the body rolls, the vibration of the suspension on both sides will be inconsistent. At this time, the lateral stabilizer bar will twist, and the elastic force of its bar body will become a resistance to continued roll, thereby playing a role in lateral stability.

[0004] At present, new energy vehicles are booming in China. Due to the presence of battery packs, new energy vehicles occupy more internal volume and weight than traditional fuel vehicles, which leads to higher energy consumption ratio of new energy vehicles. Therefore, new energy vehicles are increasingly adopting lightweight design for other components while ensuring strength. As a commonly used component, automobile stabilizer bars also follow the lightweight trend and transform from the original solid rods to lighter hollow rods.

[0005] Since hollow rods are often located in relatively harsh working environments, such as in automobile chassis suspension systems, oil extraction machinery, large chemical machinery, etc., after the hollow rods are processed, they usually need to be subjected to internal anti-corrosion treatment to prevent internal corrosion of the hollow rods from gradually expanding outward, thereby affecting the strength of the rod body and causing overall damage to the rod.

[0006] For the internal corrosion protection of hollow rods, the prior art generally adopts the method of machine-assisted or manual filling of anti-rust oil. However, due to different automobile design parameters, although the hollow rod is roughly in the shape of a rod with bent ends, the length, diameter, and bending angle of the hollow rod at both ends will be modified according to the automobile parameters. The devices in the prior art all adopt fixed oiling equipment, so they cannot adapt to hollow rods with different parameters. In addition, the devices in the prior art generally adopt unilateral oiling equipment. After the oiling on one side is completed, the mechanical arm grabs the hollow rod, changes direction, and then injects oil to the other end. This leads to problems such as slow oiling efficiency and inaccurate positioning. Utility Model Content

[0007] The utility model provides a double-head synchronous oiling device for a hollow rod, which solves the problem that most of the devices in the prior art adopt fixed oiling equipment and thus cannot adapt to hollow rods with different parameters, resulting in a small application range.

[0008] Secondly, the above-mentioned prior art devices mostly adopt a unilateral oiling method. After the oiling on one side is completed, the mechanical arm grabs the hollow rod and changes direction to inject oil to the other end, which leads to the problems of slow oiling efficiency and inaccurate positioning.

[0009] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0010] A double-head synchronous oiling device for a hollow rod comprises an equipment main frame and an oiling mechanism, wherein the oiling mechanism is slidably mounted on the main frame, the oiling mechanism comprises a sliding plate, a vertical fixed plate is slidably fixed on the sliding plate, an angle adjustment disk which can rotate on its own axis is provided on the vertical fixed plate, a turbine reducer is fixed on the angle adjustment disk, and a cylinder is fixed on the top of the turbine reducer, the cylinder is fixed to a lifting fixed plate, and the lifting fixed plate can be lifted and lowered in a direction perpendicular to the sliding plate.

[0011] Preferably, the sliding plate is provided with a sliding plate guide rail, the vertical fixed plate has an L-shaped cross-section, and the vertical fixed plate and the sliding guide rail are connected by a number of vertical plate sliders, the vertical fixed plate is provided with an angle adjustment disk fixed parallel to the sliding plate, the turbine reducer is provided with a handwheel, and a rotating shaft is provided on the top.

[0012] Preferably, an angle dial is fixed on the outer periphery of the rotating shaft of the turbine reducer and is connected to the turbine reducer as a whole, a cylinder seat is fixed on the rotating shaft of the turbine reducer, an angle pointer matching the angle dial is provided on the cylinder seat, one end of the cylinder is a telescopic rod, and the telescopic rod is connected and fixed to the lifting and fixing plate.

[0013] Preferably, a circular hole is provided on the vertical fixed plate, a circular boss is provided on the angle adjustment disk, and the boss is matched with the circular hole and accommodated in the circular hole, and a locking stud is also provided on the surface of the vertical fixed plate parallel to the sliding plate, and the locking stud can be threadedly fixed to the sliding plate guide rail in a direction perpendicular to the sliding plate guide rail.

[0014] Preferably, the sliding plate is further provided with a sliding plate scale bar, and the vertical fixed plate is provided with a sliding plate pointer matching the sliding plate scale bar.

[0015] Preferably, the main frame of the equipment is a rectangular frame structure, and a main frame table top is provided on the top plane. Two parallel table top guide rails are provided at each end of the main frame table top. A table top slider is slidably connected to the table top guide rail, and the table top slider is connected to the vertical fixed plate.

[0016] Preferably, a table scale bar is provided between the two table guide rails at each end of the main frame table, and the table scale bar matches the sliding plate pointer provided on the sliding plate.

[0017] Preferably, a fixing frame is further provided on the top plane of the main frame of the equipment, and a hollow rod to be filled with oil is fixed on the fixing frame.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] In the utility model, the design of the entire oiling mechanism fully considers the convenience and flexibility of operation. Through various adjustment methods such as sliding, rotating and lifting, the oiling mechanism can be controlled in all directions, and the oiling gun can be adjusted in many aspects and angles to adapt to hollow rods with various parameter designs, thereby achieving good adaptability and a wide range of applications. At the same time, the oiling mechanism adopts high-strength materials and precision manufacturing processes to ensure the stability and durability of the equipment, providing reliable oiling solutions for various work scenarios.

[0020] The utility model has a simple and compact structure. By adjusting the position angle, the hollow rods of various specifications can be oiled in practical applications. Therefore, the device of this embodiment can greatly improve the work efficiency and oiling quality, reduce the difficulty and error of manual operation, save costs for enterprises and improve production efficiency. At the same time, due to the simple structure and convenient operation of the device, the device is also safe, reliable and easy to maintain.

[0021] When the oiling mechanism is combined with the main frame, a double-head synchronous oiling device for the hollow rod is formed. The double-end synchronous oiling operation of the hollow rod is realized by the oiling mechanisms arranged at both ends, which saves the time of multiple positioning and disassembly and improves work efficiency. By controlling and adjusting the table guide rails and multiple guide rails and the rotating adjustment mechanism of the oiling mechanism, the adaptive adjustment and precise adjustment of hollow rods with different parameters are realized, thereby improving the application range of hollow rod oiling. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a front view schematic diagram of the overall structure of an embodiment of the utility model.

[0023] Figure 2 The figure is a front view schematic diagram of an oil injection mechanism of an embodiment of the utility model.

[0024] Figure 3 The figure is a side view schematic diagram of an oil injection mechanism according to an embodiment of the utility model.

[0025] Figure 4 It is a right side view of the oil filling mechanism of an embodiment of the utility model.

[0026] In the figure: equipment main frame 1, main frame table plate 1.1, table plate guide rail 1.2, drag chain 1.3, table plate scale bar 1.4, table plate slider 1.5, oiling mechanism 2, sliding plate 2.1, sliding plate guide rail 2.2, vertical fixed plate 2.3, vertical plate pointer 2.31, locking stud 2.32, vertical plate slider 2.33, angle adjustment plate 2.4, turbine reducer 2.5, angle scale plate 2.6, cylinder seat 2.7, angle pointer 2.71, cylinder 2.8, oiling gun 2.9, lifting fixed plate 2.10, sliding plate pointer 2.11, sliding plate scale bar 2.12, fixed frame 3, hollow rod to be oiled 4. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] At present, new energy vehicles are booming in China. Due to the presence of battery packs, new energy vehicles occupy more internal volume and weight than traditional fuel vehicles, which leads to higher energy consumption ratio of new energy vehicles. Therefore, new energy vehicles are increasingly adopting lightweight design for other components while ensuring strength. As a commonly used component, automobile stabilizer bars also follow the lightweight trend and transform from the original solid rods to lighter hollow rods.

[0029] Since hollow rods are often located in relatively harsh working environments, such as in automobile chassis suspension systems, oil extraction machinery, large chemical machinery, etc., after the hollow rods are processed, they usually need to be subjected to internal anti-corrosion treatment to prevent internal corrosion of the hollow rods from gradually expanding outward, thereby affecting the strength of the rod body and causing overall damage to the rod.

[0030] For the internal corrosion protection of hollow rods, the prior art generally adopts the method of machine-assisted or manual filling of anti-rust oil. However, due to different automobile design parameters, although the hollow rod is roughly rod-shaped with bent ends, the length, diameter, and bending angle of the hollow rod at both ends will be modified according to the automobile parameters. The devices in the prior art all adopt fixed oiling equipment, so they cannot adapt to hollow rods with different parameters. Generally, the oiling tooling and the hollow rod are adapted one by one, and the devices in the prior art generally adopt unilateral oiling equipment. After the oiling on one side is completed, the hollow rod is grabbed by the robot arm, changed direction, and then oiled to the other end. This leads to the problems of slow oiling efficiency and inaccurate positioning. In order to solve the above problems, the present embodiment is provided.

[0031] Reference Figures 2 to 4 For this embodiment 1, Figure 2 is a schematic front view of the oil injection mechanism of this embodiment 1, Figure 3 is a side view schematic diagram of the oil injection mechanism of this embodiment 1, Figure 4 The right view of the oil injection mechanism of this embodiment 1 is a double-head synchronous oil injection device for a hollow rod, including an equipment main frame and an oil injection mechanism, the oil injection mechanism is slidably mounted on the main frame, the oil injection mechanism includes a sliding plate, a vertical fixed plate is provided on the sliding plate, the vertical fixed plate is fixed on the sliding plate by sliding, so that the vertical fixed plate can slide along the sliding plate to achieve the horizontal position adjustment of the oil injection mechanism. An angle adjustment disk that can rotate from the axis is provided on the vertical fixed plate. By rotating the angle adjustment disk, the inclination angle of the turbine reducer can be adjusted, thereby driving the top cylinder and the oil injection gun to change the angle, thereby adapting to different working scenes. The angle adjustment disk is fixed with a turbine reducer, which is the core component of the oil injection mechanism, and a cylinder is fixed on the top of the turbine reducer. Through the deceleration effect of the turbine reducer, the rotating power can be transmitted to the cylinder, thereby flexibly realizing the oil injection operation. A cylinder is fixed on the top of the turbine reducer, and the cylinder is fixed by a lifting fixed plate, so that the cylinder can be lifted and adjusted in a direction perpendicular to the sliding plate. By adjusting the height of the cylinder, the oil injection position and oil injection amount of the oil injection mechanism can be changed to meet different work requirements. The cylinder is fixed to the lifting and fixing plate, and the lifting and fixing plate can be raised and lowered in a direction perpendicular to the sliding plate.

[0032] The oil injection mechanism is uniquely designed and fully functional, and can meet the working requirements in various complex environments. The main frame of the equipment is made of high-strength materials, and the structure is stable, ensuring the stability and reliability of the entire equipment. The oil injection mechanism is slidably installed on the main frame, and the position can be adjusted according to work needs, which improves the flexibility of the equipment.

[0033] The lifting and fixing plate is provided with a grease gun, which is connected to the oil tank through a hose, and the oil tank is fixed on the main frame of the equipment. The grease gun can be raised and lowered along the lifting and fixing plate to adapt to hollow rods of different heights.

[0034] There is also a controller on the main frame of the equipment. The controller monitors the position and status of the hollow rod in real time through sensors, and controls the movement of the oil injection mechanism and the operation of the oil injection gun as needed. The controller can perform human-computer interaction through a touch screen, which is convenient for users to operate and monitor.

[0035] The double-head synchronous oiling device has the advantages of compact structure, easy operation, good oiling effect, etc., and is suitable for double-head synchronous oiling operations of hollow rods of various specifications. At the same time, the device also has the characteristics of adjustable height and adjustable angle, which can adapt to different working environments and needs.

[0036] The sliding plate is provided with a sliding plate guide rail, and the vertical fixed plate has an L-shaped cross section. The L-shaped cross section design of the vertical fixed plate not only enhances its structural strength, but also makes its connection with the sliding guide rail more stable and reliable. In addition, the vertical fixed plate and the sliding guide rail are connected by a plurality of vertical plate sliders. The use of the vertical plate sliders makes the connection between the vertical fixed plate and the sliding guide rail more flexible and can adapt to the adjustment requirements of different angles. The design of the sliding plate guide rail enables the sliding plate to slide smoothly on it, thereby ensuring the stability and accuracy of the equipment. The vertical fixed plate is provided with an angle adjustment disk fixed parallel to the sliding plate. The design of the angle adjustment disk makes the angle adjustment of the equipment more convenient and accurate. By rotating the angle adjustment disk, the angle of the vertical fixed plate can be easily adjusted to meet different processing requirements. At the same time, the design of the angle adjustment disk fixed parallel to the sliding plate ensures the stability and accuracy of the angle adjustment. The turbine reducer is provided with a handwheel, and a rotating shaft is provided on the top. The handwheel provided on the turbine reducer makes the operation of the equipment more convenient. By rotating the handwheel, the speed of the turbine reducer can be easily controlled, thereby achieving precise control of the equipment. In addition, the rotating shaft design on the top of the turbine reducer enables it to be connected to the cylinder seat, thereby controlling the rotation of the cylinder seat and improving the versatility and flexibility of the equipment.

[0037] An angle dial is fixed on the outer circumference of the rotating shaft of the turbine reducer and is connected to the turbine reducer as a whole. A cylinder seat is fixed on the rotating shaft of the turbine reducer. The cylinder seat is provided with an angle pointer that matches the angle dial. During operation, the user can accurately control the rotation angle of the turbine reducer by observing the position of the angle pointer on the angle dial. This design makes the operation of the equipment more intuitive and accurate, greatly improving work efficiency. One end of the cylinder is a telescopic rod, and the telescopic rod is connected and fixed to the lifting and fixing plate. The setting of the cylinder seat enables the cylinder to be stably fixed on the rotating shaft of the turbine reducer, and the telescopic rod of the cylinder is tightly connected to the lifting and fixing plate. When the telescopic rod of the cylinder is extended and retracted, it will drive the lifting and fixing plate to perform a lifting and lowering movement, thereby realizing the lifting and lowering fine adjustment of the oiling gun connected to the lifting and fixing plate, thereby achieving the purpose of precise oiling.

[0038] The vertical fixing plate is provided with a circular hole, and the angle adjustment disk is provided with a circular boss, and the boss is matched with the circular hole and accommodated in the circular hole. During operation, the user can place the angle adjustment disk in the circular hole on the vertical fixing plate so that the boss matches the circular hole, thereby realizing the initial positioning of the angle adjustment disk and avoiding the angle adjustment disk from falling off during rotation. In this embodiment, the contact surface between the boss and the circular hole is coated with lubricating oil, thereby reducing friction and noise. When fixing, it only needs to be fixed by threaded connection through the threaded holes provided on the angle adjustment disk and the vertical fixing plate. A locking stud is also provided on the surface of the vertical fixing plate parallel to the sliding plate. The locking stud is used to fix the relative position of the vertical fixing plate on the sliding plate guide rail. The user can rotate the locking stud to make it move in a direction perpendicular to the sliding plate guide rail, so as to be threadedly fixed with the sliding plate guide rail. This method can ensure that the vertical fixing plate will not shake or deviate during operation, thereby improving the stability and accuracy of the entire equipment.

[0039] In addition, the design of the sliding plate scale bar and the sliding plate pointer allows the user to accurately adjust the position of the sliding plate. The sliding plate scale bar is engraved with fine scales, which provide precise positioning references so that the user can clearly know the current position of the sliding plate. The sliding plate pointer is a movable indicator that moves with the movement of the sliding plate and aligns with the scale on the sliding plate scale bar.

[0040] When users need to adjust the position of the slide plate, they can make precise adjustments by observing the position of the slide plate pointer on the slide plate scale bar. This design not only improves the accuracy of operation, but also greatly simplifies the user's use process. Whether it is a subtle adjustment or a large movement, the user can quickly and accurately complete it with the slide plate scale bar and the slide plate pointer.

[0041] exist Figure 2 , Figure 3 , Figure 4 On the basis of the embodiment 1, the main technical solutions such as shape, structure, position relationship, connection relationship, etc. are further refined and verified according to actual installation to obtain the present embodiment 2. The present embodiment 2 is also a double-head synchronous oiling device for a hollow rod. In addition, the present embodiments 1 and 2 are the main components of the double-head synchronous oiling device for a hollow rod. The present embodiment 2 includes an equipment main frame and an oiling mechanism. The oiling mechanism is two pieces that are slidably installed on both ends of the main frame respectively. The oiling mechanism includes a sliding plate, a vertical fixed plate is slidably fixed on the sliding plate, and an angle adjustment disk that can rotate on its own axis is provided on the vertical fixed plate. A turbine reducer is fixed on the angle adjustment disk, and a cylinder is fixed on the top of the turbine reducer. The cylinder is fixed to a lifting fixed plate, and the lifting fixed plate can be lifted and lowered in a direction perpendicular to the sliding plate, and an oiling gun is fixed on the lifting fixed plate.

[0042] The beneficial effects of Examples 1 and 2 are:

[0043] In this embodiment, the design of the entire oiling mechanism fully considers the convenience and flexibility of operation. Through various adjustment methods such as sliding, rotating and lifting, the oiling mechanism can be controlled in all directions, and the oiling gun can be adjusted in many aspects and angles to adapt to hollow rods with various parameter designs, thereby achieving good adaptability and a wide range of applications. At the same time, the oiling mechanism adopts high-strength materials and precision manufacturing processes to ensure the stability and durability of the equipment, providing reliable oiling solutions for various work scenarios.

[0044] The structure of this embodiment is simple and compact. By adjusting the position angle, the operation of oiling hollow rods of various specifications can be realized in practical applications. Therefore, the device of this embodiment can greatly improve the work efficiency and oiling quality, reduce the difficulty and error of manual operation, save costs for enterprises and improve production efficiency. At the same time, due to the simple structure and convenient operation of the device, the device is also safe, reliable and easy to maintain.

[0045] Reference Figure 1 For Example 3, Figure 1 is a schematic diagram of the overall structure of the present embodiment 3, in Figure 1 Embodiment 1 or embodiment 2 is arranged and assembled to obtain embodiment 3. Embodiment 3 is a double-head synchronous oiling device for hollow rods. The equipment main frame in the figure is a rectangular frame structure, and a main frame table board is provided on the top plane. Two parallel table board guide rails are respectively provided at both ends of the main frame table board, and table board sliders are slidably connected to the table board guide rails. The table board sliders are connected to the vertical fixed plate. The oiling mechanism is located on the table board guide rails at both ends of the main frame table board and can slide from the two end ends to the center of the main frame table board. A fixed frame is also provided on the top plane of the equipment main frame, and the fixed frame is located in the middle of the equipment main frame and is placed parallel to the table board guide rails. The hollow rod to be oiled is fixed on the fixed frame, and the oiling mechanism is respectively located at the two end ends of the hollow rod to be oiled, and can be flexibly adjusted through the relative position on the table board guide rails for accurate oiling.

[0046] A table scale bar is also provided between the two table guide rails at each end of the main frame table board, and the table scale bar matches the sliding plate pointer provided on the sliding plate. The setting of the table scale bar and the sliding plate pointer can improve the accuracy of the movement of the overall structure of the oil filling mechanism on the main frame table board, thereby improving the oil filling accuracy.

[0047] The beneficial effects of this embodiment 3 are:

[0048] When the oiling mechanism of this embodiment is combined with the main frame to form a double-headed synchronous oiling device for a hollow rod, the double-end synchronous oiling operation of the hollow rod is realized by the oiling mechanisms arranged at both ends, which saves the time of multiple positioning and disassembly and improves work efficiency. By controlling and adjusting the table top guide rails and multiple guide rails and the rotating adjustment mechanism of the oiling mechanism, the adaptive adjustment and precise adjustment of hollow rods with different parameters are realized, thereby improving the scope of application.

[0049] The above are only preferred embodiments of the present invention and do not constitute any limitation to the present invention. Any simple modification, change and equivalent transformation made to the above embodiments based on the technical essence of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A double-head synchronous oil injection device for a hollow rod, characterized in that: It includes an equipment main frame and an oil injection mechanism, which is slidably installed on the main frame. The oil injection mechanism includes a sliding plate, on which a vertical fixed plate is slidably fixed, and the vertical fixed plate is provided with an angle adjustment disk that can rotate on its own axis, a turbine reducer is fixed on the angle adjustment disk, and a cylinder is fixed on the top of the turbine reducer, and the cylinder is fixed to a lifting fixed plate, and the lifting fixed plate can be lifted and lowered in a direction perpendicular to the sliding plate.

2. A double-head synchronous oil injection device for a hollow rod according to claim 1, characterized in that: The sliding plate is provided with a sliding plate guide rail, the vertical fixed plate has an L-shaped cross-section, and the vertical fixed plate and the sliding guide rail are connected by a plurality of vertical plate sliders, the vertical fixed plate is provided with an angle adjustment disk fixed parallel to the sliding plate, the turbine reducer is provided with a hand wheel, and a rotating shaft is provided on the top.

3. A double-head synchronous oil injection device for a hollow rod according to claim 1, characterized in that: An angle dial is fixed on the outer periphery of the rotating shaft of the turbine reducer and is connected to the turbine reducer as a whole. A cylinder seat is fixed on the rotating shaft of the turbine reducer. An angle pointer matching the angle dial is provided on the cylinder seat. One end of the cylinder is a telescopic rod, and the telescopic rod is connected and fixed to the lifting and fixing plate.

4. A double-head synchronous oil injection device for a hollow rod according to claim 1 or 2, characterized in that: A circular hole is provided on the vertical fixed plate, a circular boss is provided on the angle adjustment disk, and the boss is matched with the circular hole and accommodated in the circular hole. A locking stud is also provided on the surface of the vertical fixed plate parallel to the sliding plate, and the locking stud can be threadedly fixed to the sliding plate guide rail in a direction perpendicular to the sliding plate guide rail.

5. A double-head synchronous oil injection device for a hollow rod according to claim 1 or 2, characterized in that: The sliding plate is also provided with a sliding plate scale bar, and the vertical fixed plate is provided with a sliding plate pointer matching the sliding plate scale bar.

6. A double-head synchronous oil injection device for a hollow rod according to claim 1, characterized in that: The main frame of the equipment is a rectangular frame structure, with a main frame table top on the top plane, two parallel table top guide rails are respectively provided at both ends of the main frame table top, and a table top slider is slidably connected to the table top guide rail, and the table top slider is connected to the vertical fixed plate.

7. A double-head synchronous oil injection device for a hollow rod according to claim 6, characterized in that: A table scale bar is also arranged between the two table guide rails at each end of the main frame table, and the table scale bar matches the sliding plate pointer arranged on the sliding plate.

8. A double-head synchronous oil injection device for a hollow rod according to any one of claims 1, 2, 3, 6 or 7, characterized in that: A fixing frame is also provided on the top plane of the main frame of the equipment, and a hollow rod to be filled with oil is fixed on the fixing frame.

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