Gantry oil cylinder mounting structure

Abstract

The utility model discloses a door frame oil cylinder installation structure which comprises a frame body, an oil cylinder body, a chain wheel frame, a bridge frame and a sliding holding piece. The oil cylinder body comprises a cylinder rod fixedly connected with the bottom wall of the frame body and a cylinder barrel sliding relative to the cylinder rod. The chain wheel frame is fixedly installed at the end, away from the cylinder rod, of the cylinder barrel, and a pulley with a chain wheel strip wound on the outer wall is arranged in the chain wheel frame. One end of the chain wheel strip is fixedly connected with the bottom wall of the frame body, and the other end of the chain wheel strip is connected with the bridge frame; the bridge frame is arranged on the outer side of the frame body and wraps the cylinder barrel, and when the cylinder barrel moves, the bridge frame can move relative to the cylinder barrel through the chain wheel strip; the sliding clasping piece is fixedly installed on the bridge frame and attached to the outer wall of the cylinder barrel in a sliding mode. The utility model relates to the technical field of gantry oil cylinder installation, and through the arrangement, the load capacity of the oil cylinder body in the longitudinal direction is effectively enhanced so as to ensure that the oil cylinder body does not deflect during operation.

Description

Technical Field

[0001] The utility model belongs to the technical field of mast oil cylinder installation, in particular to a mast oil cylinder installation structure. Background Art

[0002] The mast cylinder installation structure is mainly used in the forklift handling industry. At present, the existing mast cylinder installation structure is mainly as follows Figure 1 as well as Figure 2 As shown, it specifically includes a frame 101, a cylinder body 201, a sprocket frame 301 and a bridge frame 401, wherein the cylinder barrel of the cylinder body 201 is fixedly installed on the bottom wall of the frame 101, and a clamp 8 for enhancing stability is arranged between the outer wall of the frame 101 and the cylinder barrel, the cylinder rod of the cylinder body 201 is connected to the sprocket frame 301, the sprocket frame 301 has a sprocket bar fixedly connected to the side wall of the frame 101 at one end, and the other end of the sprocket bar is connected to the bridge frame 401, when the cylinder body 201 is running, the bridge frame 401 moves under the traction of the sprocket bar to complete the lifting of the goods.

[0003] However, the above device has certain defects: for example, during use, the main force point of the sprocket frame 301 is concentrated on the cylinder rod of the cylinder body 201, and the cylinder rod will increase in length during the movement, which will cause its own ability to resist longitudinal loads (that is, resist the force in the direction perpendicular to the elongation of the cylinder rod) to be reduced, that is, the stability of the cylinder rod is weakened. When the bridge 401 is laterally subjected to heavier loads of cargo, there is a possibility of longitudinal swing or breakage between the cylinder rod and the cylinder barrel of the cylinder body 201, which poses a certain safety hazard.

[0004] In addition, in the prior art, in order to ensure the stability of the bridge frame 401, it is usually necessary to set a sliding connection between the bridge frame 401 and the frame body 101, that is, by setting a guide rail on the side wall of the frame body 101 and setting a plurality of groups of rollers 501 matching the guide rail on both sides of the inner wall of the bridge frame 401 to perform connection limiting. However, although this setting enhances the stability of the connection between the bridge frame 401 and the frame body 101 to a certain extent, when the goods are placed on one side of the bridge frame 401, a force perpendicular to the extension direction of the cylinder rod will still be applied between the bridge frame 401 and the frame body 101, and the rollers and the guide rails cannot resist the force in this direction. Therefore, the bridge frame 401 may be deformed due to deviation from the side of the goods, causing the rollers and the guide rails to get stuck, thereby affecting the overall cargo handling rate.

[0005] Therefore, a mast oil cylinder mounting structure is needed to solve the above problems. Utility Model Content

[0006] The utility model aims to solve at least one of the technical problems existing in the prior art; to this end, the utility model proposes a gantry cylinder installation structure, so that when the bridge is rising, the cylinder body can be ensured not to swing, thereby improving the overall equipment's ability to resist longitudinal loads and stability. The utility model fixes the cylinder rod portion of the cylinder body to the bottom wall of the frame so as to drive it through the cylinder barrel portion, that is, the lifting of the bridge is completed by moving the cylinder barrel relative to the cylinder rod, and with the help of a sliding clamping member, the support point position of the support connection between the bridge and the cylinder barrel is always in an active and changing state. Therefore, compared with the prior art method of only having one fixed-point support, this structure can enhance the longitudinal load capacity of the cylinder body, so as to effectively ensure that the cylinder body will not swing during operation.

[0007] To achieve the above-mentioned purpose, the first aspect of the utility model provides a mast oil cylinder installation structure, including a frame body, an oil cylinder body, a sprocket frame, a bridge frame and a sliding clamping member;

[0008] The oil cylinder body comprises a cylinder rod fixedly connected to the bottom wall of the frame body and a cylinder barrel sliding relative to the cylinder rod;

[0009] The sprocket frame is fixedly mounted on one end of the cylinder away from the cylinder rod and has a pulley with a sprocket strip wound around its outer wall;

[0010] One end of the sprocket is fixedly connected to the bottom wall of the frame, and the other end is connected to the bridge frame;

[0011] The bridge is arranged outside the frame and wraps the cylinder, and when the cylinder moves, it can move relative to the cylinder through the sprocket;

[0012] The sliding clamping member is fixedly mounted on the bridge frame and is slidingly fitted with the outer wall of the cylinder.

[0013] Furthermore, the cylinder rod is configured as a hollow structure, and an oil inlet is provided on one side;

[0014] When the oil inlet is connected to the hydraulic oil, the cylinder barrel can move relative to the cylinder rod along the axial center line thereof.

[0015] Furthermore, the bridge frame includes a U-shaped mounting plate and two partitions;

[0016] The U-shaped mounting plate is slidably mounted on the outer side of the frame;

[0017] The two partitions are fixedly mounted on the U-shaped mounting plate, and a wrapping chamber is formed between the two partitions and the U-shaped mounting plate for wrapping the cylinder barrel;

[0018] The sliding and clamping member is arranged on the inner wall of the wrapping chamber.

[0019] Furthermore, one end of the sprocket passes through the wrapping chamber and the gap between the two sliding clamping members and is fixedly connected to the bottom wall of the frame, and the other end is fixedly connected to the partition.

[0020] Furthermore, the sliding clamping member includes at least two roller groups which are annularly surrounding the outside of the cylinder and are in contact with the outer wall of the cylinder;

[0021] The roller assembly comprises a mounting seat and a clamping roller;

[0022] The mounting seat is fixedly mounted on the U-shaped mounting plate or the partition;

[0023] The clamping roller is rotatably mounted inside the mounting seat, and the outer wall thereof has an inner concave surface that fits with the outer wall of the cylinder.

[0024] Furthermore, the plurality of roller groups are located in the middle of the bridge frame.

[0025] Furthermore, there is a height difference between the two roller sets.

[0026] Furthermore, the bridge frame also includes a supporting card plate;

[0027] The supporting clamp is fixedly mounted on one side of the U-shaped mounting plate.

[0028] Furthermore, the outer side wall of the frame is provided with a concave side track;

[0029] The bridge frame is provided with side rollers matching the side rails.

[0030] Furthermore, a main track is formed inwardly on one side of the frame body facing the oil cylinder body;

[0031] The bridge frame is provided with main rollers matching the main track.

[0032] Compared with the prior art, the beneficial effects of the utility model are:

[0033] By inverting the cylinder body, the cylinder rod is fixed to the bottom wall of the frame, and the cylinder barrel is connected to the bridge frame by a sliding clamping piece. When the cylinder body is running, that is, the cylinder barrel moves in the vertical direction relative to the cylinder rod, the connection between the cylinder rod and the frame and the connection between the sliding clamping piece and the cylinder barrel will form effective support for the cylinder body in the longitudinal direction, and the connection between the sliding clamping piece and the cylinder barrel can also move continuously with the elongation of the cylinder barrel, thereby effectively enhancing the longitudinal load capacity of the cylinder body to ensure that the cylinder body will not swing during operation.

[0034] Furthermore, by arranging a main track on the side of the frame facing the cylinder body, and installing a main roller matching the main track on the bridge frame, the load capacity of the bridge frame in the longitudinal direction can be improved by means of the limiting effect formed between the main roller and the inner wall of the main track, thereby avoiding jamming of one side of the bridge frame due to excessive gravity of the cargo, and improving stability during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the utility model 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 utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0036] Figure 1 It is a structural schematic diagram of a mast oil cylinder installation structure in the prior art;

[0037] Figure 2 It is another structural schematic diagram of the mast oil cylinder installation structure in the prior art;

[0038] Figure 3 It is a structural schematic diagram of the mast oil cylinder installation structure of the utility model;

[0039] Figure 4 It is a structural schematic diagram of the oil cylinder body in the gantry oil cylinder installation structure of the utility model;

[0040] Figure 5 It is a cross-sectional view of the oil cylinder body in the mast oil cylinder installation structure of the utility model;

[0041] Figure 6 It is a partial top view of the sectional view of the mast oil cylinder installation structure of the utility model;

[0042] Figure 7 It is a structural schematic diagram of the clamping roller in the gantry oil cylinder installation structure of the utility model.

[0043] Reference Numbers

[0044] 1. Frame; 2. Cylinder body; 21. Cylinder rod; 211. Oil inlet; 22. Cylinder barrel; 3. Sprocket frame; 31. Pulley; 32. Sprocket; 4. Bridge; 41. U-shaped mounting plate; 42. Partition; 43. Supporting card plate; 5. Roller assembly; 51. Mounting seat; 52. Clamping roller; 6. Side roller; 7. Main roller. DETAILED DESCRIPTION

[0045] The technical solution of the utility model will be described clearly and completely in conjunction with the embodiments below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of 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.

[0046] See also Figures 3 to 7 The first embodiment of the utility model provides a gantry oil cylinder installation structure, including a frame body 1, an oil cylinder body 2, a sprocket frame 3, a bridge frame 4 and a sliding clamping member.

[0047] The cylinder body 2 includes a cylinder rod 21 fixedly connected to the bottom wall of the frame 1 and a cylinder barrel 22 sliding relative to the cylinder rod 21, that is, the cylinder body 2 is installed in an inverted state to fix the cylinder rod 21 and the bottom wall of the frame 1 as a fulcrum.

[0048] The sprocket frame 3 is fixedly mounted on one end of the cylinder barrel 22 away from the cylinder rod 21 and has a pulley 31 inside with a sprocket bar 32 wound around its outer wall.

[0049] One end of the sprocket 32 ​​is fixedly connected to the bottom wall of the frame 1 , and the other end is connected to the bridge 4 .

[0050] It should be noted that the bridge frame 4 is arranged on the outside of the frame body 1 and wraps the cylinder 22. When the cylinder 22 moves, it can move relative to the cylinder 22 through the sprocket 32 ​​to complete the lifting function of the goods.

[0051] In addition, the sliding clamping member is fixedly mounted on the bridge frame 4 and slidingly fits with the outer wall of the cylinder 22 .

[0052] The device inverts the cylinder body 2 so that the cylinder rod 21 is fixed to the bottom wall of the frame 1, and the cylinder barrel 22 is connected to the bridge 4 by a sliding clamping member. When the cylinder body 2 is running, that is, when the cylinder barrel 22 moves in the vertical direction relative to the cylinder rod 21, the connection between the cylinder rod 21 and the frame 1 and the connection between the sliding clamping member and the cylinder barrel 22 will form an effective support for the cylinder body 2 in the longitudinal direction, and the connection between the sliding clamping member and the cylinder barrel 22 can also move continuously with the elongation of the cylinder barrel 22, thereby effectively enhancing the load capacity of the cylinder body 2 in the longitudinal direction, so as to ensure that the cylinder body 2 will not sway during operation, thereby improving the stability of operation.

[0053] In addition, by providing a sprocket frame 3, a pulley 31 and a sprocket bar 32, the device can normally complete the cargo lifting action through the bridge frame 4 when the cylinder 22 moves, thereby meeting the application requirements of the forklift.

[0054] like Figures 4 to 5 As shown, in this embodiment, the structure of the cylinder rod 21 is further limited so as to better control the movement of the cylinder barrel 22 relative to the cylinder rod 21 .

[0055] Specifically, the cylinder rod 21 is configured as a hollow structure, and an oil inlet 211 is provided on one side, so that when the oil inlet 211 is connected to hydraulic oil, the cylinder barrel 22 can move relative to the cylinder rod 21 along its axial direction, and then the bridge frame 4 is lifted through the movement of the cylinder barrel 22.

[0056] In other embodiments, the shape of the bridge 4 is further limited to limit the sprocket 32 ​​to avoid interference of the sprocket 32 ​​with other components, thereby shortening the space occupied by the structure and improving space utilization.

[0057] Specifically, the bridge frame 4 includes a U-shaped mounting plate 41 and two partition plates 42 .

[0058] The U-shaped mounting plate 41 is slidably mounted on the outside of the frame 1 , and the two partitions 42 are fixedly mounted on the U-shaped mounting plate 41 , and a wrapping chamber is formed around the U-shaped mounting plate 41 for wrapping the cylinder 22 .

[0059] Wherein, the sliding clamping member is arranged on the inner wall of the wrapping chamber.

[0060] In addition, one end of the sprocket bar 32 passes through the wrapping chamber and the gap between the two adjacent sliding clamps and is fixedly connected to the bottom wall of the frame 1, and the other end is fixedly connected to the partition 42. That is, the existence of the sprocket bar 32 will not interfere with the sliding clamp, and the space occupied by the sprocket bar 32 can be saved, thereby improving space utilization.

[0061] It should be particularly noted that the sliding clamping member includes at least two roller groups 5 that are annularly surrounded by the outside of the cylinder 22 and are in contact with the outer wall of the cylinder 22 .

[0062] In this embodiment, three roller sets 5 are provided, and a gap for the sprocket 32 ​​to pass through is formed between two roller sets 5 .

[0063] Specifically, the roller assembly 5 includes a mounting seat 51 and a clamping roller 52 , and the mounting seat 51 is fixedly mounted on the U-shaped mounting plate 41 or the partition plate 42 .

[0064] The clamping roller 52 is rotatably mounted inside the mounting seat 51 , and the outer wall thereof has an inner concave surface that fits with the outer wall of the cylinder 22 .

[0065] Among them, the cross-section of the inner concave surface can be set to an arc shape to be suitable for a cylindrical cylinder 22. In other embodiments, the cross-section of the inner concave surface can also be set to a rectangle to be suitable for a square cylinder 22. The specific shape is not described in detail here. It only needs to be able to stably fit and slide relative to the outer wall of the cylinder 22.

[0066] In this embodiment, in order to further improve the stability of the cylinder 22 during operation, the plurality of roller sets 5 are also arranged in the middle of the bridge 4 to lower the center of gravity of the bridge 4 and improve the lateral load capacity of the cylinder 22.

[0067] In addition, there is a height difference between the two roller sets 5, so that the force between the roller set 5 and the cylinder barrel 22 is more uniform, further improving stability.

[0068] In other embodiments, the bridge frame 4 further includes a supporting card plate 43 , and the supporting card plate 43 is fixedly mounted on one side of the U-shaped mounting plate 41 for supporting goods.

[0069] In a further embodiment, the outer side wall of the frame body 1 is provided with a concave side track, and the bridge frame 4 is provided with a side roller 6 matching the side track.

[0070] In addition, a main track is formed inwardly on one side of the frame body 1 facing the cylinder body 2, and a main roller 7 matching the main track is provided on the bridge frame 4.

[0071] The device arranges a main track on the side of the frame 1 facing the cylinder body 2, and installs a main roller 7 matching the main track on the bridge frame 4, so as to increase the load capacity of the bridge frame 4 in the longitudinal direction by means of the limiting effect formed between the main roller 7 and the inner wall of the main track, thereby avoiding jamming of one side of the bridge frame 4 due to excessive gravity of the goods, and improving stability during operation.

[0072] The above embodiments are only used to illustrate the technical method of the utility model rather than to limit it. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical method of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the utility model.

Claims

1. A mast cylinder mounting structure, characterized in that: It comprises a frame (1), a cylinder body (2), a sprocket frame (3), a bridge frame (4) and a sliding clamping member; The oil cylinder body (2) comprises a cylinder rod (21) fixedly connected to the bottom wall of the frame (1) and a cylinder barrel (22) sliding relative to the cylinder rod (21); The sprocket frame (3) is fixedly mounted on one end of the cylinder barrel (22) away from the cylinder rod (21), and has a pulley (31) inside with a sprocket (32) wound around its outer wall; One end of the sprocket (32) is fixedly connected to the bottom wall of the frame (1), and the other end is connected to the bridge frame (4); The bridge frame (4) is arranged outside the frame body (1) and wraps around the cylinder barrel (22), and when the cylinder barrel (22) moves, it can move relative to the cylinder barrel (22) through the sprocket (32); The sliding clamping member is fixedly mounted on the bridge frame (4) and is slidably fitted with the outer wall of the cylinder barrel (22).

2. The mast cylinder mounting structure according to claim 1, characterized in that: The cylinder rod (21) is configured as a hollow structure, and an oil inlet (211) is provided on one side; When the oil inlet (211) is connected to hydraulic oil, the cylinder barrel (22) can move relative to the cylinder rod (21) along its axial centerline.

3. The mast cylinder mounting structure according to claim 1, characterized in that: The bridge frame (4) comprises a U-shaped mounting plate (41) and two partition plates (42); The U-shaped mounting plate (41) is slidably mounted on the outside of the frame (1); The two partitions (42) are fixedly mounted on the U-shaped mounting plate (41), and a wrapping chamber is formed between the two partitions and the U-shaped mounting plate (41) for wrapping the cylinder barrel (22); The sliding and clamping member is arranged on the inner wall of the wrapping chamber.

4. The mast cylinder mounting structure according to claim 3, characterized in that: One end of the sprocket (32) passes through the wrapping chamber and the gap between the two sliding clamping members and is fixedly connected to the bottom wall of the frame (1), and the other end is fixedly connected to the partition (42).

5. The mast cylinder mounting structure according to claim 3, characterized in that: The sliding clamping member comprises at least two roller groups (5) which are annularly surrounding the outside of the cylinder (22) and are in contact with the outer wall of the cylinder (22); The roller assembly (5) comprises a mounting seat (51) and a clamping roller (52); The mounting seat (51) is fixedly mounted on the U-shaped mounting plate (41) or the partition plate (42); The clamping roller (52) is rotatably mounted inside the mounting seat (51), and the outer wall thereof has an inner concave surface that fits the outer wall of the cylinder barrel (22).

6. The mast cylinder mounting structure according to claim 5, characterized in that: The plurality of roller groups (5) are all located in the middle of the bridge frame (4).

7. The mast cylinder mounting structure according to claim 5, characterized in that: There is a height difference between the two roller sets (5).

8. The mast cylinder mounting structure according to claim 3, characterized in that: The bridge frame (4) also includes a supporting card plate (43); The supporting clamping plate (43) is fixedly mounted on one side of the U-shaped mounting plate (41).

9. The mast cylinder mounting structure according to claim 1, characterized in that: The outer side wall of the frame (1) is provided with a concave side track; The bridge frame (4) is provided with side rollers (6) matching the side rails.

10. The mast cylinder mounting structure according to claim 1, characterized in that: The frame (1) is concavely formed with a main track on one side facing the oil cylinder body (2); The bridge frame (4) is provided with a main roller (7) matching the main track.

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