Horizontal C-shaped press-fitting equipment and press-fitting system for forklift drive axle

Abstract

The utility model belongs to the technical field of drive axle assembly, and particularly relates to horizontal C-shaped press-fitting equipment and a press-fitting system for a forklift drive axle. The press-fitting device comprises two press-fitting mechanisms symmetrically arranged on the two sides of a line body rail and a connecting rod used for fixedly connecting the two press-fitting mechanisms. The press-fitting mechanism comprises a rack, an L-shaped press-fitting support installed on the rack in a sliding mode through a horizontal moving sliding table, a gas-liquid pressure cylinder with the fixed end fixedly installed on the L-shaped press-fitting support and a pressure head assembly installed on the L-shaped press-fitting support in a sliding mode through a first sliding assembly. At the initial position, the distances between the corresponding L-shaped press-fitting supports on the two sides of the line body rail and the corresponding drive axle press-fitting positions to be press-fitted in the X-axis direction are different. The two press-fitting mechanisms symmetrically arranged on the machine frame are adopted to form a horizontal C-shaped structure, press-fitting force only acts on the axes, where half-shaft oil seals and oil seal check rings are installed, of the two ends of the drive axle, other parts are not stressed, the service life of press-fitting equipment is guaranteed, and high operation efficiency is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of drive axle assembly, and in particular relates to a horizontal C-type press-fitting device and a press-fitting system for a forklift drive axle. Background Art

[0002] The half-axle oil seal and oil seal retaining ring of the forklift drive axle are important components of the drive axle. Their main function is to prevent lubricating oil from leaking from the inside of the drive axle and prevent external impurities from entering the inside of the drive axle.

[0003] The assembly of forklift drive axles belongs to the traditional engineering machinery industry. At present, the installation of half-axle oil seals and oil seal retaining rings in the workshop basically relies on manual installation. The two ends of the half-axle oil seals and oil seal retaining rings to be pressed on the drive axle need to be flipped to the upper end in turn using auxiliary equipment, and then manually pressed in the up and down directions. The process is cumbersome and the operation efficiency is low, and there is a large pressing force on the auxiliary equipment, which shortens the life of the auxiliary equipment. The existing press-fitting process has a low degree of automation, and additional auxiliary equipment is required to assist manual press-fitting, which increases the investment cost. In addition, the installation quality depends entirely on the installation skills and working conditions of the manual workers, and the stability of the operation quality cannot be guaranteed. Utility Model Content

[0004] The utility model aims to overcome the defects of low automation, low operating efficiency and unstable press-fitting operation quality in the prior art, and provides a horizontal C-type press-fitting device and a press-fitting system for a forklift drive axle.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] As a first aspect, a horizontal C-type press-fitting device for a forklift drive axle comprises two press-fitting mechanisms symmetrically arranged on both sides of a linear track and a connecting rod for fixedly connecting the two press-fitting mechanisms;

[0007] The press-fitting mechanism comprises:

[0008] A frame, an L-shaped press-fitting bracket slidably mounted on the frame via a horizontal movable slide, a gas-liquid booster cylinder with a fixed end fixedly mounted on the L-shaped press-fitting bracket, and a pressure head assembly slidably mounted on the L-shaped press-fitting bracket via a first sliding assembly; the telescopic end of the gas-liquid booster cylinder telescopes along the X-axis direction and is arranged corresponding to the pressure head assembly;

[0009] At the initial position, the distances between the L-shaped press-fitting brackets corresponding to the two sides of the linear track and the corresponding press-fitting positions of the drive axle to be press-fitted in the X-axis direction are different.

[0010] Further, the horizontal movable slide comprises at least one horizontal movable guide rail fixedly mounted on the frame along the X-axis direction, a horizontal movable slider fixedly mounted on the L-shaped press-fit bracket and mounted in cooperation with the horizontal movable guide rail, and at least one limit stopper arranged on the frame for limiting the position of the L-shaped press-fit bracket;

[0011] In the initial position, one of the L-shaped press-fitting brackets of the two press-fitting mechanisms contacts the corresponding limit stopper, and a gap is provided between the other L-shaped press-fitting bracket and the corresponding limit stopper.

[0012] Furthermore, the pressure head assembly includes a pressure head support frame, a pressure head mounting plate slidably mounted with the pressure head support frame through a pressure head switching module, and a pressure head mounted on the pressure head mounting plate.

[0013] Further, the pressure head switching module includes a switching guide rail fixedly mounted on the pressure head mounting plate, a switching slider fixedly mounted on the pressure head support frame and cooperating with the switching guide rail, and a switching cylinder with a fixed end mounted on the pressure head support frame;

[0014] The telescopic end of the switching cylinder is fixedly connected to the pressure head mounting plate via a connecting plate, and starting the switching cylinder drives the pressure head mounting plate to move along the Y-axis direction.

[0015] Furthermore, there are at least two pressing heads installed on the pressing head mounting plate.

[0016] Furthermore, it also includes at least one restoring cylinder, which is installed on the frame on the side where the gap between the L-shaped press-fitting bracket and the corresponding limit stopper is provided, and is used to drive the L-shaped press-fitting bracket to move to the initial position;

[0017] The restoring cylinder drives the L-shaped press-fitting bracket to move along the X-axis direction.

[0018] Furthermore, there are two horizontal movable guide rails and two limit blocks; the two limit blocks are respectively arranged on L-shaped press-fit brackets corresponding to the ends of the two horizontal guide rails.

[0019] Furthermore, the first sliding assembly includes a first guide rail fixedly mounted on the L-shaped press-fitting bracket along the X-axis direction and a first sliding block fixedly mounted on the pressing head assembly and slidably matched with the first guide rail.

[0020] As a second aspect, a forklift drive axle press-fitting system includes a storage bin for storing and placing workpieces, a robot for gripping and delivering workpieces, a linear track for placing the drive axle, and the horizontal C-type press-fitting equipment as described above.

[0021] The beneficial effects of the horizontal C-type press-fitting device for a forklift drive axle of the utility model are:

[0022] The utility model adopts two pressing mechanisms symmetrically arranged on the frame to form a horizontal C-shaped structure, and presses the half-shaft oil seal and the oil seal retaining ring on the drive axle on the horizontal plane. With the cooperation of two horizontal movable slides, the pressing force only acts on the axis of the half-shaft oil seal and the oil seal retaining ring installed at both ends of the drive axle, and other parts are not subjected to force. Long-term use will not cause pressure damage to other parts, ensuring the service life of the press-fitting equipment of the utility model. No other auxiliary equipment is required to automatically realize the press-fitting of the half-shaft oil seal and the oil seal retaining ring at both ends of the drive axle, with high operating efficiency and quality stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0024] Figure 1 It is a structural schematic diagram of the press-fitting equipment in the embodiment of the utility model.

[0025] Figure 2 It is an installation diagram of the press-fitting equipment and the line track in the embodiment of the utility model.

[0026] Figure 3 It is a structural schematic diagram of the press-fitting mechanism in the embodiment of the utility model from a first viewing angle.

[0027] Figure 4 It is a schematic structural diagram of the press-fitting mechanism from a second viewing angle in an embodiment of the utility model.

[0028] Figure 5 It is a detailed diagram of the pressure head switching module part in the embodiment of the utility model.

[0029] Figure 6 It is a structural schematic diagram of the press-fitting system in the embodiment of the utility model.

[0030] In the figure: 1. Pressing mechanism, 11. Frame, 12. Horizontally movable slide, 121. Horizontally movable guide rail, 122. Horizontally movable slider, 123. Limit block, 13. L-shaped press-fitting bracket, 14. Gas-liquid booster cylinder, 15. First sliding assembly, 151. First guide rail, 152. First slider, 16. Press head assembly, 161. Press head support frame, 162. Press head switching module, 1621. Switching guide rail, 1622. Switching slider, 1623. Switching cylinder, 1624. Connecting plate, 163. Press head mounting plate, 164. Press head, 17. Reduction cylinder, 2. Connecting rod, 3. Linear track, 4. Pallet, 5. Manipulator, 6. Storage bin, 7. Drive axle to be pressed. DETAILED DESCRIPTION

[0031] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0032] like Figure 1-Figure 6 The specific embodiment of the horizontal C-type press-fitting device of a forklift drive axle of the utility model shown in the figure comprises two press-fitting mechanisms 1 symmetrically arranged on both sides of a linear track 3 and a connecting rod 2 for fixedly connecting the two press-fitting mechanisms 1, wherein the press-fitting mechanism 1 comprises a frame 11, an L-shaped press-fitting bracket 13 slidably mounted on the frame 11 through a horizontal movable slide 12, a gas-liquid booster cylinder 14 whose fixed end is fixedly mounted on the L-shaped press-fitting bracket 13, and a press head assembly 16 slidably mounted on the L-shaped press-fitting bracket 13 through a first sliding assembly 15; the telescopic end of the gas-liquid booster cylinder 14 telescopes along the X-axis direction and is arranged corresponding to the press head assembly 16. The first sliding assembly 15 comprises a first guide rail 151 fixedly mounted on the L-shaped press-fitting bracket 13 along the X-axis direction and a first slider 152 fixedly mounted on the press head assembly 16 and slidingly matched with the first guide rail 151. The gas-liquid booster cylinder 14 is started to drive the press head assembly 16 to move along the X-axis direction on the L-shaped press-fitting bracket 13, that is, to drive the press head assembly 16 to approach or move away from the drive axle 7 to be press-fitted.

[0033] In the initial position, the L-shaped press-fitting brackets 13 corresponding to the two sides of the linear track 3 are at different distances from the corresponding press-fitting positions of the drive axle 7 to be press-fitted in the X-axis direction. Two press-fitting mechanisms 1 symmetrically arranged on the frame 11 are used to form a horizontal C-shaped structure, and the half-shaft oil seals and oil seal retaining rings are press-fitted on the drive axle on the horizontal plane. With the cooperation of two horizontal movable slides 12, the press-fitting force only acts on the axis of the half-shaft oil seals and oil seal retaining rings installed at both ends of the drive axle, and other parts are not subjected to force. Long-term use will not cause pressure damage to other parts, ensuring the service life of the press-fitting equipment of the utility model. There is no need to set up other auxiliary equipment, and the press-fitting of the half-shaft oil seals and oil seal retaining rings at both ends of the drive axle can be realized automatically, with high operating efficiency and quality stability.

[0034] like Figure 3 and Figure 4As shown, the horizontal movable slide 12 includes at least one horizontal movable guide rail 121 fixedly mounted on the frame 11 along the X-axis direction, a horizontal movable slider 122 fixedly mounted on the L-shaped press-fitting bracket 13 and mounted in cooperation with the horizontal movable guide rail 121, and at least one limit stopper 123 arranged on the frame 11 for limiting the position of the L-shaped press-fitting bracket 13. In the initial position, one L-shaped press-fitting bracket 13 in the two press-fitting mechanisms 1 contacts the corresponding limit stopper 123, and a gap is arranged between the other L-shaped press-fitting bracket 13 and the corresponding limit stopper 123. As an embodiment, there are two horizontal movable guide rails 121 and two limit stops 123, and the two limit stops 123 are respectively arranged on the L-shaped press-fitting brackets 13 corresponding to the ends of the two horizontal guide rails.

[0035] By using two horizontally movable slides 12, the distances in the X-axis direction between the corresponding L-shaped press-fitting brackets 13 on both sides of the linear track 3 and the corresponding press-fitting positions of the drive bridge 7 to be press-fitted are different, that is, in the original state in this embodiment, one end of the L-shaped press-fitting bracket 13 on one side of the linear track 3 away from the press-fitting position contacts the corresponding limit stopper, and there is a certain gap between the L-shaped press-fitting bracket 13 on the other side of the linear track 3 and the limit stopper 123, and the distance between the press head assembly 16 corresponding to the gap side and the drive bridge 7 to be press-fitted is smaller than the distance between the press head assembly 16 corresponding to the gap-free side and the drive bridge 7 to be press-fitted. During press-fitting, the press head assembly 16 corresponding to the gap side first contacts the drive bridge 7 to be press-fitted, and under the action of the reaction force, first contacts the L-shaped press-fitting bracket 13 corresponding to the drive bridge 7 to be press-fitted Under the action of the horizontal moving slide 12, the L-shaped press-fitting bracket 13 moves a certain distance in the opposite direction of the press-fitting direction, so that the drive axle 7 to be press-fitted and the tray 4 are only subjected to the friction between the horizontal moving guide rail 121 and the horizontal moving slider 122, thereby preventing the tray 4 loaded with the drive axle 7 to be press-fitted from tipping over due to excessive movement. When the pressure head assembly 16 on the other side contacts the drive axle 7 to be press-fitted, the two ends of the drive axle 7 to be press-fitted and the workpiece begin to be press-fitted at the same time. During the press-fitting process, the two L-shaped press-fitting brackets 13 are not in contact with the corresponding limit blocks 123, and there is no force for relative movement, thereby ensuring that during the press-fitting process, the tray 4 and the drive axle 7 to be press-fitted are subjected to the reaction force of the press-fitting, thereby ensuring the service life of the tray 4 and other components of the press-fitting equipment.

[0036] In order to realize fully automated press-fitting, the present embodiment also includes at least one restoring cylinder 17, which is installed on the frame 11 on the side where the gap between the L-shaped press-fitting bracket 13 and the corresponding limit stopper 123 is set, and is used to drive the L-shaped press-fitting bracket 13 to move to the initial position; the restoring cylinder 17 drives the L-shaped press-fitting bracket 13 to move along the X-axis direction. The restoring cylinder 17 is set to restore the L-shaped press-fitting bracket 13 to the initial position after press-fitting. During press-fitting, it is necessary to reach the set press-fitting force and press-fit for a certain period of time, which is 3 seconds in this embodiment. When the press-fitting is completed, the gas-liquid booster cylinder 14 drives the L-shaped press-fitting bracket 13 to move away from the drive axle. The two L-shaped press-fitting brackets 13 will move to the position where the corresponding limit stopper 123 contacts under the action of friction. Therefore, the side with the gap needs to restore the L-shaped press-fitting bracket 13 to the initial position by the restoring cylinder 17, waiting for the next press-fitting action. Of course, the reduction cylinder 17 can also be arranged on the frame 11 corresponding to the two L-shaped press-fit brackets 13 according to the specific application scenario. There is no absolute limitation on the number and installation position of the reduction cylinder 17 here.

[0037] In this embodiment, the pressure head assembly 16 includes a pressure head support frame 161, a pressure head mounting plate 163 slidably mounted on the pressure head support frame 161 through a pressure head switching module 162, and a pressure head 164 mounted on the pressure head mounting plate 163. Figure 4 It should be further explained that, in order to be applicable to the press-fitting of various types of drive axles and workpieces, as an implementation method, Figure 5 As shown, a pressure head switching module 162 for switching different pressure heads 164 is provided in the pressure head assembly 16, and the pressure head switching module 162 includes a switching guide rail 1621 fixedly mounted on the pressure head mounting plate 163, a switching slider 1622 fixedly mounted on the pressure head support frame 161 and matched with the switching guide rail 1621, and a switching cylinder 1623 with a fixed end mounted on the pressure head support frame 161; the telescopic end of the switching cylinder 1623 is fixedly connected to the pressure head mounting plate 163 through a connecting plate 1624, and the switching cylinder 1623 is started to drive the pressure head mounting plate 163 to move along the Y-axis direction. It should be understood that in this embodiment, the number of pressure heads 164 is at least two, and they are arranged in sequence along the Y-axis.

[0038] The press-fitting system based on the same inventive concept of the above press-fitting equipment is specifically referred to Figure 6 , including a storage bin 6 for storing and placing workpieces, a manipulator 5 for gripping and delivering workpieces, a linear track 3 for placing a drive axle, a tray 4 installed on the linear track 3 for placing a drive axle 7 to be pressed, and the above-mentioned horizontal C-type pressing equipment. It should be further explained that the storage bin 6, manipulator 5, tray 4 and linear track 3 that can be thought of by those skilled in the art can all be used in the system, and the specific structures of the storage bin 6, manipulator 5, tray 4 and linear track 3 will not be elaborated in detail here.

[0039] The use process of the forklift drive axle pressing system is as follows: the line track 3 drives the pallet 4 to the pressing position, switches the corresponding pressing head 164 according to the model information of the drive axle, starts the manipulator 5 to place the oil seal on the pressing head 164 in the two pressing mechanisms 1, and after the placement is completed, starts the air stroke valves of the two air-liquid booster cylinders 14 at the same time, and the pressing head 164 quickly approaches the drive axle 7 to be pressed to press the oil seal. After reaching the pressing position, the pressure is maintained for 3 seconds, and the pressing is completed. The air-liquid booster cylinder 14 retreats, starts the restore cylinder 17, moves the L-shaped pressing bracket 13 to the initial position, and presses the next oil seal.

[0040] The utility model integrates the manual discrete operation mode of oil seal and retaining ring press-fitting to form a set of press-fitting automation system, and can realize the press-fitting of multi-model drive axles. It saves labor and has a high degree of equipment automation. It adopts a horizontal C-type press-fitting mechanism with high press-fitting accuracy and low maintenance cost. The automatic line operation is continuous and stable, and the beat is increased to 80S. It completely solves the problems of inconsistent beats, easy fatigue, and unstable production capacity in manual operations.

[0041] It should be understood that the specific embodiments described above are only used to explain the present invention, and are not used to limit the present invention. Obvious changes or modifications derived from the spirit of the present invention are still within the scope of protection of the present invention.

Claims

1. A horizontal C-type press-fitting device for a forklift drive axle, characterized in that: It comprises two pressing mechanisms (1) symmetrically arranged on both sides of a linear track (3) and a connecting rod (2) used for fixedly connecting the two pressing mechanisms (1); The press-fitting mechanism (1) comprises: A frame (11), an L-shaped press-fitting bracket (13) slidably mounted on the frame (11) via a horizontally movable slide (12), a gas-liquid booster cylinder (14) whose fixed end is fixedly mounted on the L-shaped press-fitting bracket (13), and a pressure head assembly (16) slidably mounted on the L-shaped press-fitting bracket (13) via a first sliding assembly (15); the telescopic end of the gas-liquid booster cylinder (14) is telescopic along the X-axis direction and is arranged corresponding to the pressure head assembly (16); In the initial position, the distances between the L-shaped press-fitting brackets (13) corresponding to the two sides of the linear track (3) and the corresponding press-fitting positions of the drive axle (7) to be press-fitted in the X-axis direction are different.

2. The horizontal C-type press-fitting equipment for a forklift drive axle according to claim 1, characterized in that: The horizontal movable slide (12) comprises at least one horizontal movable guide rail (121) fixedly mounted on the frame (11) along the X-axis direction, a horizontal movable slide block (122) fixedly mounted on the L-shaped press-fit bracket (13) and mounted in cooperation with the horizontal movable guide rail (121), and at least one limit stopper (123) arranged on the frame (11) for limiting the position of the L-shaped press-fit bracket (13); In the initial position, one of the L-shaped press-fitting brackets (13) of the two press-fitting mechanisms (1) is in contact with the corresponding limit stopper (123), and a gap is provided between the other L-shaped press-fitting bracket (13) and the corresponding limit stopper (123).

3. The horizontal C-type press-fitting equipment for a forklift drive axle according to claim 1, characterized in that: The pressure head assembly (16) comprises a pressure head support frame (161), a pressure head mounting plate (163) slidably mounted on the pressure head support frame (161) via a pressure head switching module (162), and a pressure head (164) mounted on the pressure head mounting plate (163).

4. The horizontal C-type press-fitting equipment for a forklift drive axle according to claim 3 is characterized in that: The pressure head switching module (162) comprises a switching guide rail (1621) fixedly mounted on the pressure head mounting plate (163), a switching slider (1622) fixedly mounted on the pressure head support frame (161) and cooperating with the switching guide rail (1621), and a switching cylinder (1623) with a fixed end mounted on the pressure head support frame (161); The telescopic end of the switching cylinder (1623) is fixedly connected to the pressure head mounting plate (163) via a connecting plate (1624), and starting the switching cylinder (1623) drives the pressure head mounting plate (163) to move along the Y-axis direction.

5. The horizontal C-type press-fitting equipment for a forklift drive axle according to claim 4, characterized in that: There are at least two pressing heads (164) installed on the pressing head mounting plate (163).

6. The horizontal C-type press-fitting equipment for a forklift drive axle according to claim 2, characterized in that: It also includes at least one restoring cylinder (17), the restoring cylinder (17) being mounted on the frame (11) on the side where a gap is provided between the L-shaped press-fitting bracket (13) and the corresponding limit stopper (123), and being used to drive the L-shaped press-fitting bracket (13) to move to an initial position; The restoring cylinder (17) drives the L-shaped press-fitting bracket (13) to move along the X-axis direction.

7. The horizontal C-type press-fitting equipment for a forklift drive axle according to claim 2, characterized in that: There are two of each of the horizontal moving guide rail (121) and the limit stopper (123); the two limit stoppers (123) are respectively arranged on the L-shaped press-fit brackets (13) corresponding to the ends of the two horizontal moving guide rails (121).

8. The horizontal C-type press-fitting equipment for a forklift drive axle according to claim 1, characterized in that: The first sliding assembly (15) comprises a first guide rail (151) fixedly mounted on the L-shaped press-fitting bracket (13) along the X-axis direction, and a first sliding block (152) fixedly mounted on the pressing head assembly (16) and slidably matched with the first guide rail (151).

9. A forklift drive axle press-fitting system, characterized in that: It comprises a storage bin (6) for storing and placing workpieces, a robot (5) for gripping and delivering workpieces, a linear track (3) for placing a drive axle, a tray (4) installed on the linear track (3) for placing a drive axle (7) to be pressed, and a horizontal C-type pressing device as described in any one of claims 1 to 8.

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