Double-beam double-lifting-point bridge crane

Abstract

The utility model provides a double-beam double-suspension-point bridge crane which comprises a first trolley and a second trolley, a turnover frame is hinged to the top of one end of the first trolley, and a telescopic frame is arranged at the end, away from the first trolley, of the turnover frame in a sliding mode. The telescopic frame is provided with a telescopic driving mechanism for driving the telescopic frame to move and adjust along the overturning frame in a telescopic mode, and the first trolley is provided with an overturning driving mechanism for driving the overturning frame to be switched between the vertical state and the horizontal state. According to the utility model, the telescopic driving motor drives the screw rod to rotate so as to realize the adjustment and positioning of the lifting point distance between the first trolley and the second trolley, the influence of external environmental factors is small, and the lifting point distance can be accurately adjusted in smog and steam environments.

Description

Technical Field

[0001] This utility model belongs to the field of crane technology, specifically relating to a double-beam double-lifting-point bridge crane. Background Technology

[0002] A double-girder bridge crane is a crane with two main beams. Double-girder bridge cranes are used to lift heavy materials. Depending on the size of the material, a crane with two lifting points may be selected for lifting.

[0003] In the prior art, Chinese utility model patent document with authorization announcement number CN221836586U discloses a double-beam double-lifting-point bridge crane, which can detect the distance between the first trolley and the second trolley by means of a distance measuring sensor and a distance measuring baffle, and thus obtain the distance between the two lifting points, realizing automatic adjustment of the lifting device; however, the laser distance measuring sensor is easily affected by the external environment, and the presence of a large amount of smoke and steam will cause measurement deviation, affecting the accuracy of adjusting the distance between the lifting points.

[0004] Therefore, it is necessary to design a double-beam, double-lifting-point bridge crane that can accurately adjust the lifting point spacing in smoke and steam environments to solve the current technical problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a double-beam, double-lifting-point bridge crane capable of accurately adjusting the lifting point spacing in smoke and steam environments.

[0006] The technical solution of this utility model is as follows: a double-girder double-lifting-point bridge crane, including a first trolley and a second trolley. A tilting frame is hinged to the top of one end of the first trolley. A telescopic frame is slidably arranged on the tilting frame at the end opposite to the first trolley. A telescopic drive mechanism is provided on the telescopic frame to drive it to move telescopically along the tilting frame for adjustment. A tilting drive mechanism is provided on the first trolley to drive the tilting frame to switch between a vertical state and a horizontal state. A locking mechanism is provided at the end of the second trolley for locking or releasing it from the end of the telescopic frame. The telescopic drive mechanism has a frame plate provided at the end of the telescopic frame. A lead screw is rotatably arranged on the frame plate near the tilting frame. The lead screw is threadedly connected to the tilting frame. A telescopic drive motor is provided on the telescopic frame to drive the lead screw to rotate. A proximity switch is provided on the second trolley for detecting the end of the telescopic frame to be in position.

[0007] Furthermore, guide rods are symmetrically arranged on the side of the frame plate near the flipping frame, and a support plate is fixedly arranged on the end of the guide rod opposite to the frame plate. The lead screw is rotatably connected to the support plate, and the telescopic drive motor is fixedly arranged on the support plate and is drivenly connected to the lead screw.

[0008] Furthermore, the tilting frame has two parallel tilting arms, one end of which is hinged to the first trolley, and a connecting rod is fixedly provided between the other ends of the two tilting arms. The telescopic frame has a telescopic arm that is slidably disposed inside the end of the tilting arm, and the frame plate is disposed between the two telescopic arms.

[0009] Furthermore, a locking hole is provided on one end of the telescopic arm away from the tilting arm, and a locking seat matching the end of the tilting arm is fixedly provided on the second trolley. A locking bolt is slidably provided on one side of the locking seat, and the locking bolt corresponds to the locking hole. A reciprocating drive assembly is provided on the second trolley to drive the locking bolt to reciprocate to lock or release the locking seat and the telescopic arm.

[0010] Furthermore, the reciprocating drive assembly has a connecting rod hinged to one end of the locking bolt, and a drive rod hinged to the other end of the connecting rod. The second trolley is equipped with a locking drive cylinder that drives the drive rod to reciprocate.

[0011] Furthermore, a slide cylinder is fixedly provided on the side of the locking seat near the connecting rod, and the slide cylinder is slidably fitted on the outside of the locking bolt.

[0012] Furthermore, the first trolley is equipped with a stand, and a tilting drive cylinder is hinged to the top of the stand. The end of the tilting drive cylinder is hinged to one side of the tilting frame.

[0013] Furthermore, the proximity switch is fixedly mounted on the top of the second trolley via a switch bracket.

[0014] The beneficial effects of this utility model are:

[0015] (1) In this utility model, the first trolley and the second trolley can operate independently of each other, or they can be connected and move synchronously to meet different usage needs;

[0016] (2) The flipping drive mechanism drives the flipping frame to move to a horizontal state. Then the first trolley and the second trolley approach each other. After the proximity switch detects that the end of the telescopic frame has moved into place, the locking mechanism locks the first trolley and the second trolley, so that the first trolley and the second trolley can move and run synchronously.

[0017] (3) After the first trolley and the second trolley are connected by a telescopic frame, the telescopic frame is driven to move at the end of the tilting frame by the telescopic drive mechanism. The total length of the tilting frame and the telescopic frame can be adjusted, thereby adjusting the distance between the lifting points of the first trolley and the second trolley to meet different lifting requirements.

[0018] (4) The telescopic drive motor drives the lead screw to rotate to adjust and position the distance between the lifting points of the first trolley and the second trolley. It is less affected by external environmental factors and can accurately adjust the distance between the lifting points in smoke and steam environments. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] Figure 2 This is a structural schematic diagram of the first trolley of this utility model.

[0021] Figure 3 This is a schematic diagram of the structure of the second trolley of this utility model. Detailed Implementation

[0022] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. The descriptions of the exemplary embodiments are merely illustrative and are not intended to limit the present invention or its application or use in any way. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present invention thorough and complete, and to fully express the scope of the present invention to those skilled in the art. It should be noted that, unless otherwise specifically stated, the relative arrangement of components and steps, the composition of materials, numerical expressions, and values ​​set forth in these embodiments should be interpreted as merely exemplary and not as limiting.

[0023] The terms "first," "second," and similar words used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. Words such as "including" or "comprising" mean that the element preceding the word encompasses the element listed after it, and do not exclude the possibility of encompassing other elements as well. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0024] like Figures 1 to 3As shown, a double-girder double-lifting-point bridge crane includes a first trolley 1 and a second trolley 2. A tilting frame 3 is hinged to the top of one end of the first trolley 1. A telescopic frame 4 is slidably mounted on the tilting frame 3 at the end opposite to the first trolley 1. A telescopic drive mechanism 5 is provided on the telescopic frame 4 to drive its telescopic movement along the tilting frame 3. A tilting drive mechanism 6 is provided on the first trolley 1 to drive the tilting frame 3 to switch between a vertical and horizontal state. A locking mechanism 7 is provided at the end of the second trolley 2 to lock or release it from the end of the telescopic frame 4. The telescopic drive mechanism 5 has a frame plate 42 at the end of the telescopic frame 4. A lead screw 52 is rotatably mounted on the frame plate 42 near the tilting frame 3, and the lead screw 52 is threadedly connected to the tilting frame 3. A telescopic drive motor 54 is provided on the telescopic frame 4 to drive the lead screw 52 to rotate. A proximity switch 79 is provided on the second trolley 2 to detect the position of the end of the telescopic frame 4. In this embodiment, the first trolley 1 and the second trolley 2 can operate independently or be connected and moved synchronously. The system operates dynamically to meet various usage requirements. The tilting drive mechanism 6 drives the tilting frame 3 to a horizontal position, after which the first trolley 1 and the second trolley 2 approach each other. Once the proximity switch 79 detects that the end of the telescopic frame 4 has moved into position, the locking mechanism 7 locks the first trolley 1 and the second trolley 2 together, allowing them to move synchronously. The first trolley 1 and the second trolley 2 are connected by the telescopic frame 4, and the telescopic drive mechanism 5 drives the telescopic frame 4 to move at the end of the tilting frame 3. This allows for adjustment of the total length of the tilting frame 3 and the telescopic frame 4, thereby adjusting the distance between the lifting points of the first trolley 1 and the second trolley 2 to meet different lifting requirements. The telescopic drive motor 54 drives the lead screw 52 to rotate, thereby adjusting and positioning the distance between the lifting points of the first trolley 1 and the second trolley 2. This adjustment is less affected by external environmental factors and can accurately adjust the distance between the lifting points in smoke and steam environments. The telescopic drive motor 54 is a servo motor with high positioning accuracy.

[0025] In some embodiments, guide rods 51 are symmetrically arranged on the side of the frame plate 42 near the flipping frame 3. A support plate 53 is fixedly arranged on the end of the guide rod 51 away from the frame plate 42. A lead screw 52 is rotatably connected to the support plate 53. A telescopic drive motor 54 is fixedly arranged on the support plate 53 and is connected to the lead screw 52 for transmission. The guide rod 51 provides support for the support plate 53. At the same time, the sliding connection between the guide rod 51 and the connecting rod 32 ensures the stability of the movement of the telescopic frame 4.

[0026] In some embodiments, the flipping frame 3 has two parallel flipping arms 31, one end of which is hinged to the first trolley 1, and a connecting rod 32 is fixedly provided between the other ends of the two flipping arms 31. The telescopic frame 4 has a telescopic arm 41 that is slidably disposed inside the end of the flipping arm 31, and a frame plate 42 is disposed between the two telescopic arms 41.

[0027] In some embodiments, a locking hole 43 is provided on one end of the telescopic arm 41 away from the tilting arm 31, and a locking seat 71 that matches the end of the tilting arm 31 is fixedly provided on the second trolley 2. A locking bolt 72 is slidably provided on one side of the locking seat 71, and the locking bolt 72 corresponds to the locking hole 43. A reciprocating drive assembly is provided on the second trolley 2 to drive the locking bolt 72 to reciprocate to lock or release the locking seat 71 and the telescopic arm 41.

[0028] In some embodiments, the reciprocating drive assembly has a connecting rod 75 hinged to one end of the locking bolt 72, and a drive rod 76 hinged to the other end of the connecting rod 75. The second trolley 2 is provided with a locking drive cylinder 77 that drives the drive rod 76 to reciprocate. The locking drive cylinder 77 drives the drive rod 76 to reciprocate. During the reciprocating movement of the drive rod 76, the locking bolt 72 is driven to reciprocate on the locking seat 71 through the connecting rod 75, so as to insert the locking bolt 72 into the interior of the locking hole 43, or to pull the locking bolt 72 out of the interior of the locking hole 43, thereby realizing the locking or releasing between the locking seat 71 and the telescopic arm 41; wherein the locking drive cylinder 77 is a hydraulic cylinder or an electric push rod.

[0029] In some embodiments, a slide cylinder 73 is fixedly provided on the side of the locking seat 71 near the connecting rod 75. The slide cylinder 73 is slidably fitted on the outside of the locking bolt 72. The sliding support of the sliding cylinder 73 on the locking bolt 72 ensures the stability of the movement of the locking bolt 72.

[0030] In some embodiments, a stand 62 is provided on the first trolley 1, and a tilting drive cylinder 61 is hinged to the top of the stand 62. The end of the tilting drive cylinder 61 is hinged to one side of the tilting frame 3. The tilting drive cylinder 61 is a hydraulic cylinder or an electric push rod. The tilting clamp at the end of the tilting drive cylinder 61 is driven to tilt back and forth by the extension and retraction of the tilting drive cylinder 61, so as to realize the conversion between the vertical and horizontal states of the tilting frame 3.

[0031] In some embodiments, the proximity switch 79 is fixedly mounted on the top of the second trolley 2 via a switch bracket 78.

[0032] The various embodiments of this utility model have now been described in detail. To avoid obscuring the concept of this utility model, some details known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

[0033] The embodiments described above only illustrate some implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A double-girder double-lifting-point bridge crane, comprising a first trolley and a second trolley, characterized in that: A tilting frame is hinged to the top of one end of the first trolley. A telescopic frame is slidably mounted on the tilting frame at the end opposite to the first trolley. The telescopic frame is equipped with a telescopic drive mechanism that drives it to move telescopically along the tilting frame. The first trolley is equipped with a tilting drive mechanism that drives the tilting frame to switch between a vertical and a horizontal state. The end of the second trolley is equipped with a locking mechanism for locking or releasing it from the end of the telescopic frame. The telescopic drive mechanism has a frame plate at the end of the telescopic frame. A lead screw is rotatably mounted on the frame plate near the tilting frame. The lead screw is threaded to the tilting frame. A telescopic drive motor that drives the lead screw to rotate is mounted on the telescopic frame. The second trolley is equipped with a proximity switch for detecting when the end of the telescopic frame is in position.

2. The double-beam, double-lifting-point bridge crane according to claim 1, characterized in that: Guide rods are symmetrically arranged on the side of the frame plate near the flipping frame. A support plate is fixedly arranged on the end of the guide rod away from the frame plate. The lead screw is rotatably connected to the support plate. The telescopic drive motor is fixedly arranged on the support plate and is drivenly connected to the lead screw.

3. The double-beam, double-lifting-point bridge crane according to claim 1, characterized in that: The tilting frame has two parallel tilting arms, one end of which is hinged to the first trolley, and a connecting rod is fixedly provided between the other ends of the two tilting arms. The telescopic frame has a telescopic arm that is slidably disposed inside the end of the tilting arm, and the frame plate is disposed between the two telescopic arms.

4. The double-beam, double-lifting-point bridge crane according to claim 3, characterized in that: The telescopic arm has a locking hole at one end opposite to the tilting arm. The second trolley is fixedly equipped with a locking seat that matches the end of the tilting arm. A locking bolt is slidably provided on one side of the locking seat. The locking bolt corresponds to the locking hole. The second trolley is equipped with a reciprocating drive assembly that drives the locking bolt to reciprocate to lock or release the locking seat from the telescopic arm.

5. The double-beam, double-lifting-point bridge crane according to claim 4, characterized in that: The reciprocating drive assembly has a connecting rod hinged to one end of the locking bolt, and a drive rod hinged to the other end of the connecting rod. The second trolley is equipped with a locking drive cylinder that drives the drive rod to reciprocate.

6. The double-beam, double-lifting-point bridge crane according to claim 5, characterized in that: A slide cylinder is fixedly installed on the side of the locking seat near the connecting rod, and the slide cylinder is slidably fitted on the outside of the locking bolt.

7. The double-beam, double-lifting-point bridge crane according to claim 1, characterized in that: The first trolley is equipped with a stand, and a tilting drive cylinder is hinged to the top of the stand. The end of the tilting drive cylinder is hinged to one side of the tilting frame.

8. The double-beam, double-lifting-point bridge crane according to claim 1, characterized in that: The proximity switch is fixedly mounted on the top of the second trolley via a switch bracket.

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