Weighing and grease injection equipment of maintenance-free hub unit

Abstract

The utility model relates to a weighing grease injection device of a maintenance-free hub unit, which belongs to the technical field of hub production and comprises a workbench and a support box fixedly connected to the back of the top of the workbench, and a lower grease injection weighing mechanism extending to the top of the workbench is arranged at the bottom of the workbench. According to the weighing grease injection equipment of the maintenance-free hub unit, a first telescopic air cylinder is arranged to drive a mounting shell to move upwards, then the mounting shell drives a porous grease injection head to move upwards, so that a positioning head can be aligned to a grease injection hole of a hub assembly, grease can be conveyed into the porous grease injection head through a grease injection pump, and the grease injection efficiency is improved; the weight of the hub assembly before and after grease injection can be measured by arranging a weighing sensor, excessive or small amount of grease injection is avoided, meanwhile, grease injection can be conducted on the upper portion and the lower portion of the hub assembly at the same time by arranging a second telescopic air cylinder, and the grease injection efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wheel hub production, in particular to a weighing and greasing device for a maintenance-free wheel hub unit. Background Art

[0002] The wheel hub is a cylindrical metal part with the inner profile of the tire supporting the tire and the center mounted on the shaft. It is also called wheel rim, steel rim, wheel, and tire bell. There are many types of wheel hubs according to their diameter, width, molding method, and materials. The main purpose of greasing the wheel hub assembly is to ensure the normal operation of the wheel hub bearing and extend its service life.

[0003] During the production process of the wheel hub assembly, it is necessary to inject grease into the internal bearing. The Chinese utility model patent with the announcement number CN207112327U discloses a grease injection device for automobile wheel hub bearings. A plate-through hole is provided on the limit plate; a baffle plate is slidably connected in the plate-through hole, the baffle plate is connected to the piston rod of the lower hydraulic cylinder, and is driven by the lower hydraulic cylinder to move horizontally, and the movement direction of the baffle plate is parallel to the width direction of the conveyor belt; an upper hydraulic cylinder is provided above the conveyor belt, the fixed end of the upper hydraulic cylinder is connected to the frame, the piston rod of the upper hydraulic cylinder is driven to connect with a support plate, the support plate is driven up and down by the upper hydraulic cylinder, the grease injection head is connected to the support plate, the grease injection part has a circular horizontal cross-section, a grease injection cavity is provided in the grease injection part, an oil outlet hole connected to the grease injection cavity is provided on the grease injection part, a grease injection joint is connected to the grease injection joint, the grease injection joint is connected to the discharge port of the guide pipe, a quantitative valve is provided on the guide pipe, and the feed port of the guide pipe is connected to the grease supply barrel. The utility model allows the automobile wheel hub bearing to be processed to move along with the conveyor belt, and the limiting plates on both sides of the conveyor belt limit the automobile wheel hub bearing to prevent the automobile wheel hub bearing from shifting, which helps to ensure that the subsequent grease injection process can be carried out smoothly.

[0004] However, during use of the utility model, since only the upper part of the wheel hub can be greased while the lower part cannot be greased at the same time, the grease injection of the upper and lower parts of the wheel hub assembly may be uneven, thereby affecting the performance of the wheel hub assembly and failing to meet production requirements. Therefore, a weighing and greasing device for a maintenance-free wheel hub unit is proposed to solve the above-mentioned problems. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a weighing and greasing device for a maintenance-free wheel hub unit, which has the advantage of being easy to grease the lower part of the wheel hub assembly, and solves the problem that when greasing the wheel hub assembly, only the upper part of the wheel hub assembly can be greased, and the lower part cannot be greased at the same time, which may cause the upper and lower parts of the wheel hub assembly to be greased unevenly, thereby affecting the performance of the wheel hub assembly and failing to meet production needs.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a weighing and greasing device for a maintenance-free hub unit, comprising a workbench and a support box fixedly connected to the back of the top of the workbench, wherein a greasing weighing mechanism extending to the top of the workbench is provided at the bottom of the workbench;

[0007] The lower grease injection weighing mechanism includes a first telescopic cylinder fixedly installed on the bottom of the workbench, a mounting shell is provided on the output end of the first telescopic cylinder, a grease injection pump is fixedly installed inside the mounting shell, a side of the mounting shell away from the first telescopic cylinder is fixedly connected to a porous grease injection head, a connecting pipe is fixedly connected between the grease injection pump and the porous grease injection head, and a weighing sensor is fixedly connected between the first telescopic cylinder and the mounting shell.

[0008] Furthermore, there are two installation shells, one of which is slidably connected to the front side of the support box, and a through opening adapted to the installation shell is provided inside the workbench.

[0009] Furthermore, one end of the grease injection pump away from the connecting pipe is fixedly connected to a delivery pipe extending to the outside of the mounting shell, and the two mounting shells are symmetrically distributed on the top and bottom of the workbench.

[0010] Furthermore, a second telescopic cylinder is fixedly installed on the top of the support box, and a lifting block extending into the interior of the support box is fixedly connected to the output end of the second telescopic cylinder, and a connecting block is fixedly connected between the lifting block and the mounting shell.

[0011] Furthermore, the left and right sides of the lifting block are fixedly connected with sliding blocks extending into the interior of the support box, and the inner wall of the support box is provided with sliding grooves adapted to the sliding blocks.

[0012] Furthermore, a fixing plate is fixedly connected to the top of the workbench, one side of the fixing plate is threadedly connected to a threaded rod extending to the other side thereof, and one end of the threaded rod away from the fixing plate is rotatably connected to a clamping plate.

[0013] Furthermore, one end of the threaded rod away from the clamping plate is fixedly connected to a rotating handle, and one side of the clamping plate close to the threaded rod is fixedly connected to a limiting guide rod penetrating the fixing plate.

[0014] Furthermore, support legs are fixedly installed on the bottom of the workbench. The number of the support legs is four, and the four support legs are evenly distributed on the bottom of the workbench.

[0015] Compared with the prior art, the utility model provides a weighing and greasing device for a maintenance-free hub unit, which has the following beneficial effects:

[0016] 1. The weighing grease injection equipment of the maintenance-free hub unit drives the mounting shell to move upward by setting a first telescopic cylinder, and then drives the porous grease injection head to move upward by the mounting shell, so that the positioning head can be aligned with the grease injection hole of the hub. The grease injection pump can be provided to transport the grease to the inside of the porous grease injection head, thereby achieving the effect of greasing the lower half of the hub. The weighing sensor can be provided to measure the weight of the hub before and after grease injection, thereby avoiding excessive or insufficient grease injection. At the same time, the second telescopic cylinder can be provided to grease the upper and lower parts of the hub at the same time, thereby improving the grease injection efficiency.

[0017] 2. The weighing grease injection equipment of the maintenance-free hub unit drives the threaded rod to rotate by turning the rotating handle, and then drives the clamping plate to move by the threaded rod, so as to clamp and fix the hub to prevent the hub from shifting during the greasing process. This solves the problem that when greasing the hub assembly, only the upper part of the hub assembly can be greased, and the lower part cannot be greased at the same time, which may cause the grease injection of the upper and lower parts of the hub assembly to be uneven, thereby affecting the performance of the hub assembly and failing to meet production needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a cross-sectional view of the structure of the utility model;

[0019] Figure 2 This is a structural schematic diagram of the grease injection weighing mechanism of the utility model;

[0020] Figure 3 This is a bottom view of the structure of the multi-porous grease injection head of the utility model;

[0021] Figure 4 It is a side sectional view of the support box of the utility model;

[0022] Figure 5 It is a structural schematic diagram of the workbench of the utility model.

[0023] In the figure: 1 workbench, 2 support box, 3 first telescopic cylinder, 4 mounting shell, 5 grease pump, 6 porous grease head, 7 positioning head, 8 connecting pipe, 9 weighing sensor, 10 second telescopic cylinder, 11 lifting block, 12 fixing plate, 13 threaded rod, 14 clamping plate, 15 limit guide rod, 16 support leg. DETAILED DESCRIPTION

[0024] 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.

[0025] Embodiment 1:

[0026] See also Figure 1-4 In this embodiment, a weighing and greasing device for a maintenance-free hub unit comprises a workbench 1 and a supporting box 2 fixedly connected to the top and back of the workbench 1. A lower grease weighing mechanism extending to the top of the workbench 1 is arranged at the bottom of the workbench 1. The lower grease weighing mechanism comprises a first telescopic cylinder 3 fixedly installed at the bottom of the workbench 1. A mounting shell 4 is arranged on the output end of the first telescopic cylinder 3. A grease pump 5 is fixedly installed inside the mounting shell 4. A porous grease head 6 is fixedly connected to the side of the mounting shell 4 away from the first telescopic cylinder 3. A connecting pipe 8 is fixedly connected between the grease pump 5 and the porous grease head 6. A weighing sensor 9 is fixedly connected between the first telescopic cylinder 3 and the mounting shell 4.

[0027] Among them, the number of mounting shells 4 is two, one of which is slidably connected to the front side of the support box 2, a through opening adapted to the mounting shell 4 is opened inside the workbench 1, and one end of the grease pump 5 away from the connecting pipe 8 is fixedly connected with a delivery pipe extending to the outside of the mounting shell 4, and the two mounting shells 4 are symmetrically distributed at the top and bottom of the workbench 1.

[0028] It should be noted that a controller is fixedly installed on one side of the workbench 1. The number of positioning heads 7 is the same as the number of grease injection holes of the wheel hub. In order to ensure the uniformity of grease injection, a large number of small grease injection holes are evenly distributed on the circumference of the grease injection head. The diameter of the grease injection hole is 2 mm.

[0029] In this embodiment, a second telescopic cylinder 10 is fixedly installed on the top of the support box 2, and a lifting block 11 extending into the interior of the support box 2 is fixedly connected to the output end of the second telescopic cylinder 10, and a connecting block is fixedly connected between the lifting block 11 and the mounting shell 4.

[0030] Among them, the left and right sides of the lifting block 11 are fixedly connected with sliders extending into the interior of the support box 2, the inner wall of the support box 2 is provided with a sliding groove adapted to the slider, and the front of the support box 2 is provided with a movable groove adapted to the connecting block.

[0031] In this embodiment, support legs 16 are fixedly installed at the bottom of the workbench 1 . There are four support legs 16 , and the four support legs 16 are evenly distributed at the bottom of the workbench 1 .

[0032] Embodiment 2:

[0033] See also Figure 1-5 On the basis of the first embodiment, it includes a fixing plate 12 fixedly connected to the top of the workbench 1, one side of the fixing plate 12 is threadedly connected to a threaded rod 13 extending to the other side thereof, and one end of the threaded rod 13 away from the fixing plate 12 is rotatably connected to a clamping plate 14.

[0034] In this embodiment, a rotating handle is fixedly connected to one end of the threaded rod 13 away from the clamping plate 14, and a limiting guide rod 15 that passes through the fixed plate 12 is fixedly connected to the side of the clamping plate 14 close to the threaded rod 13. There are two fixed plates 12, and the two fixed plates 12 are symmetrically distributed on the top of the workbench 1.

[0035] By adopting the above technical solution, the threaded rod 13 is rotated by rotating the rotating handle, and the pressing plate 14 is moved by the threaded rod 13, so that the wheel hub assembly can be pressed and fixed to prevent the wheel hub assembly from shifting during the grease injection process.

[0036] The working principle of the above embodiment is:

[0037] First, place the wheel hub on the workbench 1, turn the rotating handle to drive the threaded rod 13 to move, and at the same time, press and fix the left and right sides of the wheel hub assembly with the clamping plate 14. After the fixation is completed, the staff first measures the weight of the current wheel hub assembly, and then starts the first telescopic cylinder 3 and the second telescopic cylinder 10 at the same time, and moves the two porous grease injection heads 6 toward the direction of the wheel hub assembly respectively, so that the positioning head 7 extends to the inside of the grease injection hole of the wheel hub assembly, and starts the grease injection pump 5 to transport the grease to the inside of the wheel hub assembly. At this time, the weighing sensor 9 monitors the weight of the wheel hub assembly in real time, and the grease injection can be stopped when the weight of the wheel hub assembly reaches the preset value.

[0038] The electrical components appearing in the article are all electrically connected to the main controller and the power supply. The main controller can be a conventional known device for control such as a computer, and the existing public power connection technology is not described in detail in the article.

[0039] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A weighing and greasing device for a maintenance-free hub unit, comprising a workbench (1) and a support box (2) fixedly connected to the top and back of the workbench (1), characterized in that: The bottom of the workbench (1) is provided with a grease injection weighing mechanism extending to the top thereof; The lower grease injection weighing mechanism comprises a first telescopic cylinder (3) fixedly mounted on the bottom of the workbench (1); a mounting shell (4) is provided on the output end of the first telescopic cylinder (3); a grease injection pump (5) is fixedly mounted inside the mounting shell (4); a multi-porous grease injection head (6) is fixedly connected to the side of the mounting shell (4) away from the first telescopic cylinder (3); a connecting pipe (8) is fixedly connected between the grease injection pump (5) and the multi-porous grease injection head (6); and a weighing sensor (9) is fixedly connected between the first telescopic cylinder (3) and the mounting shell (4).

2. The weighing and greasing equipment for a maintenance-free hub unit according to claim 1 is characterized in that: The number of the installation shells (4) is two, one of which is slidably connected to the front of the support box (2), and a through opening matching the installation shell (4) is provided inside the workbench (1).

3. The weighing and greasing equipment for a maintenance-free hub unit according to claim 1, characterized in that: One end of the grease injection pump (5) away from the connecting pipe (8) is fixedly connected to a delivery pipe extending to the outside of the mounting shell (4), and the two mounting shells (4) are symmetrically distributed on the top and bottom of the workbench (1).

4. The weighing and greasing equipment for a maintenance-free hub unit according to claim 1, characterized in that: A second telescopic cylinder (10) is fixedly mounted on the top of the support box (2); a lifting block (11) extending into the interior of the support box (2) is fixedly connected to the output end of the second telescopic cylinder (10); a connecting block is fixedly connected between the lifting block (11) and the mounting shell (4).

5. The weighing and greasing equipment for a maintenance-free hub unit according to claim 4, characterized in that: The left and right sides of the lifting block (11) are fixedly connected with sliding blocks extending into the interior of the support box (2), and the inner wall of the support box (2) is provided with sliding grooves adapted to the sliding blocks.

6. The weighing and greasing equipment for a maintenance-free hub unit according to claim 1, characterized in that: A fixing plate (12) is fixedly connected to the top of the workbench (1), one side of the fixing plate (12) is threadedly connected to a threaded rod (13) extending to the other side thereof, and one end of the threaded rod (13) away from the fixing plate (12) is rotatably connected to a clamping plate (14).

7. The weighing and greasing equipment for a maintenance-free hub unit according to claim 6, characterized in that: One end of the threaded rod (13) away from the clamping plate (14) is fixedly connected to a rotating handle, and one side of the clamping plate (14) close to the threaded rod (13) is fixedly connected to a limiting guide rod (15) penetrating the fixing plate (12).

8. The weighing and greasing equipment for a maintenance-free hub unit according to claim 1, characterized in that: Support legs (16) are fixedly mounted on the bottom of the workbench (1), and there are four support legs (16). The four support legs (16) are evenly distributed on the bottom of the workbench (1).

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