A cross lift

Abstract

The utility model relates to a cross-type lifting platform, including a base, a platform, an X-shaped lifting frame and a hydraulic cylinder. The first and second lifting frames of the X-shaped lifting frame are hinged in the middle through a rotating shaft, and the rotating shaft is connected to the first lifting frame and / or the second lifting frame through a first tapered roller bearing. The first tapered roller bearing is respectively crimped with the inner ring and the outer ring on the inner side and / or the outer side of the front and rear direction of the X-shaped lifting frame through a locking ring and an end cover to lock. A lubrication cavity is left between the end cover and the first tapered roller bearing, and the lubrication cavity is connected to the grease filling hole on the end cover; the pin shaft and the roller are connected through the second tapered roller bearing. The tapered roller bearing is used to connect the rotating shaft at the hinge of the first and second lifting frames of the X-shaped lifting frame, and the lubrication cavity is formed by crimping the end cover. The lubrication cavity can be filled with oil through the grease filling hole to lubricate, thereby avoiding the problem of rotation failure caused by damage and deformation of the traditional copper bushing structure, greatly improving the lifting stability, and lubricating oil can be added in real time to ensure the performance and life.

Description

Technical Field

[0001] The utility model relates to a lifting device, in particular to a cross-type lifting platform. Background Art

[0002] For traditional X-shaped cross lifting platforms, the rotating shaft of the articulated X-shaped bracket is generally connected with a copper bushing. Its rotation performance, life and stability are poor, and it is greatly affected by the use environment and temperature. It is prone to wear after long-term use. It is very easy to be damaged and the hinge is misaligned due to unbalanced gravity during lifting, affecting the normal, stable and safe lifting. Summary of the invention

[0003] The utility model provides a cross-type lifting platform which has a simple and stable structure and can ensure stable hinge connection and long service life.

[0004] The technical solution adopted by the utility model is: a cross-type lifting platform, including a base, a platform, an X-shaped lifting frame and a hydraulic cylinder, the front and rear directions of the base are respectively supported by two groups of X-shaped lifting frames, the X-shaped lifting frame includes a first and a second lifting frame, the first and the second lifting frames are hinged in the middle through a rotating shaft, the left side of the first lifting frame is hinged on the base, the left side of the second lifting frame is hinged on the platform, the right side of the first lifting frame is supported on the base through a pin shaft through a roller, and the right side of the second lifting frame is supported by a roller through a pin shaft, and the platform is supported by the roller, characterized in that: the rotating shaft is connected with the first lifting frame and / or the second lifting frame through a first tapered roller bearing, the first tapered roller bearing is respectively pressed and locked with an inner ring and an outer ring through a locking ring and an end cover on the inner side and / or the outer side of the X-shaped lifting frame in the front and rear directions, a lubrication cavity is left between the end cover and the first tapered roller bearing, and the lubrication cavity is connected to the grease filling hole on the end cover; the pin shaft and the roller are connected through the second tapered roller bearing.

[0005] The rotating axes of the two groups of X-shaped lifting frames are the same axis.

[0006] The first tapered roller bearing is a double-row tapered roller bearing.

[0007] The rotating shaft and the two first tapered roller bearings of the first and second brackets are single-row tapered roller bearings, respectively, and the cone angles of the two single-row tapered roller bearings are facing or opposite to each other.

[0008] The pin shaft and the roller are connected via two second tapered roller bearings.

[0009] The second tapered roller bearing is a double-row tapered roller bearing.

[0010] The right side of the oil hydraulic cylinder is pin-connected to the right side of the base, and the left side cylinder joint of the oil hydraulic cylinder is connected to the right side of the rotating shaft on the first lifting frame through a driving pin shaft.

[0011] The beneficial effects of the utility model are as follows: tapered roller bearings are used to pass through the rotating shaft at the hinges of the first and second lifting frames of the X-shaped lifting frame, and the end covers are crimped to form a lubrication cavity, which can be lubricated through the grease filling hole, avoiding the problem of rotation failure caused by damage and deformation of the traditional copper bushing structure, greatly improving the lifting stability, and adding lubricating oil in real time to ensure performance and life; adding tapered roller bearings to the roller-through-pin shaft structure of the end support can also improve the support stability and service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 for Figure 1 Internal top view of

[0014] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0015] Figure 4 for Figure 2 Enlarged view of point B in the middle;

[0016] Figure 5 It is a top view of the hydraulic cylinder connection structure of the utility model.

[0017] In the figure: base 1, platform 2, first lifting frame 3, second lifting frame 4, rotating shaft 5, spacer 6, first double row tapered roller bearing 7, locking ring 8, end cover 9, lubrication chamber 10, grease filling hole 11, pin 12, second double row tapered roller bearing 13, roller 14, hydraulic cylinder 15, driving pin 16. DETAILED DESCRIPTION

[0018] The following is a further description with reference to the accompanying drawings.

[0019] Figure 1-5 As shown: a cross-type lifting platform, including a base 1, a platform 2, two sets of X-shaped lifting frames, a rotating shaft 5, a spacer 6, a first double-row tapered roller bearing 7, a locking ring 8, an end cover 9, a pin 12, a second double-row tapered roller bearing 13, a roller 14, a hydraulic cylinder 15, and a driving pin 16.

[0020] The front and rear directions of the base 1 are respectively supported by two sets of X-shaped frames, the X-shaped frames include the first and second frames 3 and 4, the first and second frames 3 and 4 are hinged through the rotating shaft 5, the left side of the first frame 3 is hinged on the base 1, the left side of the second frame 4 is hinged on the platform 2, and the right side of the first frame 3 is supported on the base 2 through the distribution shaft 12 and the second double-row tapered roller bearing 13 through the roller 14, see Figure 2 , 4In the figure, the second lifting frame 4 supports the platform 2 through the right side distribution shaft 12 and the second double-row tapered roller bearing 13 and the roller 14. Figure 2 , 3 In the figure, the first frame 3 is located outside the second frame 4 and a spacer 6 is arranged in the middle. The rotating shaft 5 passes through the second frame 4, the spacer 6 and the first frame 3 in sequence from the inside. The rotating shaft 5 and the first frame 3 are connected through the first double-row tapered roller bearing 7. The first double-row tapered roller bearing 7 is respectively pressed and locked with its inner ring and outer ring on the outside of the first frame 3 through a locking ring 8 and an end cover 9. A lubrication cavity 10 is left between the end cover 9 and the first double-row tapered roller bearing 7, and the lubrication cavity 10 is connected to the grease filling hole 11 on the end cover 9; see Figure 1 , 5 In the figure, the right side of the hydraulic cylinder 15 is pinned to the right side of the base 1, and the left side cylinder joint of the hydraulic cylinder 15 is connected to the right side of the rotating shaft on the second lifting frame 4 through the driving pin shaft 16.

[0021] In this embodiment, in order to ensure the consistency and stability of the rotation and lifting, it is preferred that the rotation axes of the two sets of X-shaped lifting frames use one axis.

Claims

1. A cross-type lifting platform, including a base, a platform, an X-shaped lifting frame and a hydraulic cylinder. The base supports the platform through two sets of X-shaped lifting frames in the front and rear directions respectively. The X-shaped lifting frame includes a first lifting frame and a second lifting frame. The first lifting frame and the second lifting frame are hinged in the middle through a rotating shaft. The left side of the first lifting frame is hinged on the base, and the left side of the second lifting frame is hinged on the platform. The right side of the first lifting frame is supported on the base through a distribution shaft passing through a roller, and the right side of the second lifting frame is supported on the platform through a distribution shaft passing through a roller. The characteristics are: The rotating shaft is connected to the first lifting frame and / or the second lifting frame via the first tapered roller bearing. The first tapered roller bearing is crimped and locked with the inner ring and outer ring respectively on the inner side and / or outer side in the front-rear direction of the X-shaped lifting frame via a locking ring and an end cover. A lubrication cavity is left between the end cover and the first tapered roller bearing, and the lubrication cavity is connected to the grease filling hole on the end cover; the pin shaft and the roller are connected via the second tapered roller bearing.

2. A cross-type lifting platform according to claim 1, characterized in that: The rotating axes of the two groups of X-shaped lifting frames are the same axis.

3. A cross-type lifting platform according to claim 1, characterized in that: The first tapered roller bearing is a double-row tapered roller bearing.

4. A cross-type lifting platform according to claim 1, characterized in that: The rotating shaft and the two first tapered roller bearings of the first and second brackets are single-row tapered roller bearings, respectively, and the cone angles of the two single-row tapered roller bearings are facing or opposite to each other.

5. A cross-type lifting platform according to claim 1, characterized in that: The pin shaft and the roller are connected via two second tapered roller bearings.

6. A cross-type lifting platform according to claim 1 or 5, characterized in that: The second tapered roller bearing is a double-row tapered roller bearing.

7. A cross-type lifting platform according to claim 1, characterized in that: The right side of the oil hydraulic cylinder is pin-connected to the right side of the base, and the left side cylinder joint of the oil hydraulic cylinder is connected to the right side of the rotating shaft on the first lifting frame through a driving pin shaft.

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