Hook trolley splitting mechanism of hook bridge crane

Abstract

The utility model relates to the technical field of cranes, and provides a lifting hook trolley splitting mechanism of a lifting hook bridge crane, which comprises a travelling crane frame, a main trolley and an auxiliary trolley are respectively arranged above the travelling crane frame in a sliding manner, and a mounting structure for connecting the main trolley and the auxiliary trolley is arranged between the main trolley and the auxiliary trolley; the mounting structure comprises two positioning units and two inserting rods, the two positioning units correspond to the two inserting rods respectively, the two inserting rods are symmetrically fixed to the left side of the main trolley, the inserting rods are arranged in the sliding direction of the main trolley, the left ends of the inserting rods are fixedly connected with conical discs, and sliding rings are arranged on the inserting rods in a sliding mode; the main trolley and the auxiliary trolley can be quickly and freely connected through the mounting structure, so that the main trolley and the auxiliary trolley share a driver on the main trolley, a set of trolley running mechanism is omitted, and compared with a traditional integrated trolley structure, the trolley is lighter in weight and lighter in total weight, and the service life of the trolley is prolonged. And meanwhile, the cost consumption can be reduced while the use working condition is met.

Description

Technical Field

[0001] This utility model relates to the field of crane technology, and in particular to a hook trolley disassembly mechanism for a hook bridge crane. Background Technology

[0002] Bridge cranes are lifting equipment that spans across workshops, warehouses, and material yards for material handling. Because their ends rest on tall concrete pillars or metal supports, they resemble bridges. The bridge frame of a bridge crane runs longitudinally along tracks laid on elevated structures on both sides, making full use of the space beneath the bridge frame to lift materials without being obstructed by ground equipment.

[0003] A double-trolley bridge crane with connectable hooks, authorized in publication number CN115676635B, includes two end beams and two main beams between them. A lifting trolley is mounted on each main beam. The lifting trolley includes a trolley frame, and a drum drive motor is mounted on the top of the trolley frame to drive a wire rope drum. A lifting device, including a mounting frame, is located below the lifting trolley. A hook is located at the bottom of the mounting frame, and connecting devices are located on both sides of the mounting frame. The connecting devices include a rotary motor and a docking cylinder. This bridge crane solves the problem of connecting two lifting trolleys in the prior art. When operating together, the lack of a connecting structure between the hooks leads to instability issues during lifting. However, for ease of use, bridge cranes have two independent hooks mounted on a trolley. Due to the size requirements of the trolley, the two hooks are close together, increasing the limitations of their use. Furthermore, the two independent hooks require two drive sources, resulting in a heavier overall trolley and higher energy consumption. Additionally, the two independent hooks mounted on two separate trolleys require two drive sources, increasing the overall cost of the bridge crane. Utility Model Content

[0004] The purpose of this utility model is to provide a hook trolley splitting mechanism for a hook bridge crane. Through the installation structure, the main trolley and the auxiliary trolley can be quickly and freely connected, so that the main trolley and the auxiliary trolley can share the drive on the main trolley, which can meet the working conditions while reducing cost consumption.

[0005] The present invention adopts the following technical solution: a hook bridge crane hook trolley splitting mechanism, including a trolley frame, a main trolley and an auxiliary trolley are slidably arranged on the top of the trolley frame, and an installation structure for connecting the main trolley and the auxiliary trolley is provided between the main trolley and the auxiliary trolley.

[0006] The installation structure includes two positioning units and two insertion rods. The two positioning units correspond to the two insertion rods respectively. The two insertion rods are symmetrically fixed on the left side of the main trolley. The insertion rods are arranged along the sliding direction of the main trolley. A conical disk is fixedly connected to the left end of the insertion rod, and a sliding ring is slidably arranged on the insertion rod.

[0007] Preferably, the positioning unit includes two elastic telescopic rods, and two symmetrically arranged mounting slots are provided at the right end of the auxiliary trolley. The elastic telescopic rods are installed in the mounting slots and are arranged along the width direction of the mounting slots. The two elastic telescopic rods are fixedly connected to a locking block at their opposite ends.

[0008] Preferably, the side of the locking block facing the insertion rod is inclined, and the side of the locking block away from the insertion rod is flat.

[0009] Preferably, the insertion rod includes a round rod and a rectangular rod, the rectangular rod is fixed on the main trolley, the round rod is connected to the rectangular rod, the conical disc is fixed to the left end of the round rod, the conical disc is slidably connected to the round rod, and an elastic element is provided between the sliding ring and the rectangular rod.

[0010] Preferably, the lower end of the rectangular rod is provided with a slot, and the right side of the positioning unit is provided with a top rod that is slidably disposed in the mounting groove. The top rod slides in the up and down direction, and the lower end of the top rod passes through the mounting groove. The top rod corresponds to the slot.

[0011] Preferably, a sliding groove is provided above the overhead crane frame, the lower end of the top rod corresponds to the sliding groove, and the right end of the sliding groove has an inclined transition surface.

[0012] Preferably, the sliding ring is conical, and the inclined surface of the sliding ring is opposite to the inclined surface of the conical disk.

[0013] Preferably, a ball bearing is installed at the lower end of the push rod.

[0014] Preferably, pulleys are installed under both the main trolley and the auxiliary trolley, and guide grooves corresponding to the pulleys are opened on both sides of the traveling frame.

[0015] The beneficial effects of this utility model are:

[0016] 1. The installation structure allows for quick and free connection between the main trolley and the auxiliary trolley, enabling both trolleys to share the same drive unit on the main trolley. This reduces the number of trolley running mechanisms, resulting in a lighter trolley weight and overall vehicle weight compared to traditional integrated trolley structures. It also reduces costs while meeting operational requirements, leading to lower manufacturing costs.

[0017] 2. By using the insertion rod and positioning unit together, the main trolley and the auxiliary trolley can be freely connected or separated, and the energy consumption of the main trolley can be saved when it is used alone; when the main trolley and the auxiliary trolley are used together, the main trolley, as the main moving source, can drive the auxiliary trolley to move synchronously, reducing one set of operating mechanisms.

[0018] 3. The position of the insertion rod can be limited by the cooperation between the push rod and the slot, preventing the insertion rod from continuing to move into the mounting slot when the main trolley moves to the left. Attached Figure Description

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

[0020] Figure 2 This is a schematic diagram of the structure of the crane frame of this utility model;

[0021] Figure 3 This is a schematic diagram of the installation structure between the main trolley and the auxiliary trolley of this utility model;

[0022] Figure 4 This is a three-dimensional cross-sectional view of the installation structure of this utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the insertion rod of this utility model;

[0024] Figure 6 This is a cross-sectional structural diagram of the auxiliary trolley of this utility model;

[0025] Figure 7 This is a schematic diagram of the structure of the overhead crane frame of this utility model.

[0026] In the picture:

[0027] 1. Overhead crane frame; 2. Main trolley; 3. Auxiliary trolley; 4. Positioning unit; 5. Top rod; 6. Insert rod; 7. Pulley; 11. Guide groove; 12. Slide groove; 21. First lifting device; 22. Main hook; 23. Driver; 31. Second lifting device; 32. Auxiliary hook; 33. Mounting groove; 41. Elastic telescopic rod; 42. Locking block; 61. Conical disc; 62. Sliding ring; 63. Elastic element; 601. Round rod; 602. Rectangular rod; 603. Locking groove. Detailed Implementation

[0028] The present invention will now be described in detail with reference to the accompanying drawings and embodiments:

[0029] like Figures 1 to 7As shown, this utility model provides a hook trolley splitting mechanism for a hook bridge crane, including a crane frame 1. A main trolley 2 and an auxiliary trolley 3 are slidably arranged on the upper part of the crane frame 1. Both the main trolley 2 and the auxiliary trolley 3 have rectangular holes. A first lifting device 21 and a second lifting device 31 are respectively installed on the main trolley 2 and the auxiliary trolley 3. The first lifting device 21 and the second lifting device 31 are respectively installed with a main hook 22 and an auxiliary hook 32 through the rectangular holes via control cables. Pulleys 7 are installed below the main trolley 2 and the auxiliary trolley 3. Guide grooves 11 corresponding to the pulleys 7 are opened on both sides of the crane frame 1. The guide grooves 11 can limit the position of the pulleys 7. An installation structure for connecting the main trolley 2 and the auxiliary trolley 3 is provided between them. A driver 23 is installed on one side of the main trolley 2. The driver 23 is a geared motor to increase the transmission torque. The driver 23 is connected to one of the pulleys 7.

[0030] In the above scheme, the product can be lifted by the hook body on the main trolley 2 or the main trolley 2 and the auxiliary trolley 3. The main trolley 2 can slide on the gantry frame 1 to adjust the position of the product left and right. At the same time, the gantry frame 1 can slide back and forth to adjust the position of the product forward and backward so that the product can be moved to the preset position.

[0031] The installation structure allows for quick and free connection between the main trolley 2 and the auxiliary trolley 3, enabling both trolley 2 and trolley 3 to share the drive 23 on the main trolley 2. This reduces the number of trolley running mechanisms, resulting in a lighter trolley weight and overall vehicle weight compared to traditional integrated trolley structures. It also reduces costs while meeting operational requirements, leading to lower manufacturing costs.

[0032] The mounting structure includes two positioning units 4 and two insertion rods 6. The two positioning units 4 correspond to the two insertion rods 6 respectively. The two insertion rods 6 are symmetrically fixed on the left side of the main trolley 2. The insertion rods 6 are arranged along the sliding direction of the main trolley 2. A conical disk 61 is fixedly connected to the left end of the insertion rod 6. A sliding ring 62 is slidably arranged on the insertion rod 6. The sliding ring 62 is conical, and the inclined surface of the sliding ring 62 is opposite to the inclined surface of the conical disk 61.

[0033] The positioning unit 4 includes two elastic telescopic rods 41. The right end of the auxiliary trolley 3 has two symmetrically arranged mounting slots 33. The elastic telescopic rods 41 are fixed in the mounting slots 33. The elastic telescopic rods 41 are arranged along the width direction of the mounting slots 33. The two elastic telescopic rods 41 are fixedly connected to a locking block 42 at their opposite ends. The locking block 42 is inclined towards the side of the insertion rod 6, and the side of the locking block 42 away from the insertion rod 6 is flat.

[0034] In the above scheme, before the hook bridge crane is used, in the initial state, the auxiliary trolley 3 is located at the leftmost end of the gantry frame 1, and the main trolley 2 and the auxiliary trolley 3 are separated. The main trolley 2 is responsible for the main work. When the main trolley 2 and the auxiliary trolley 3 need to be used together, the main trolley 2 moves toward the auxiliary trolley 3, so that the insert rod 6 on the main trolley 2 is inserted into the mounting groove 33. The conical disc 61 on the insert rod 6 contacts the locking block 42. The conical disc 61 continues to move toward the mounting groove 33. Under the action of the inclined surface of the locking block 42, the conical disc 61 pushes the two locking blocks 42 to move in opposite directions. After the conical disc 61 breaks through the locking block 42, the locking block 42 is reset under the action of the elastic telescopic rod 41, so that the locking block 42 limits the position of the conical disc 61, so that the main trolley 2 and the auxiliary trolley 3 are connected, thereby realizing that the main trolley 2 drives the auxiliary trolley 3 to move synchronously toward the right end.

[0035] The insertion rod 6 includes a round rod 601 and a rectangular rod 602. The rectangular rod 602 is fixed on the main trolley 2, the round rod 601 is fixedly connected to the rectangular rod 602, the conical disk 61 is fixed to the left end of the round rod 601, and the conical disk 61 is slidably connected to the round rod 601. An elastic element 63 is provided between the sliding ring 62 and the rectangular rod 602. The elastic element 63 is a spring and is sleeved on the round rod 601.

[0036] The lower end of the rectangular rod 602 is provided with a slot 603. The right side of the positioning unit 4 is provided with a push rod 5 that is slidably disposed in the mounting groove 33. The push rod 5 slides in the up and down direction. The lower end of the push rod 5 passes through the mounting groove 33. The push rod 5 corresponds to the slot 603. The outer side of the guide groove 11 is provided with a sliding groove 12 that is opened on the traveling frame 1. The lower end of the push rod 5 corresponds to the sliding groove 12. The length of the sliding groove 12 is less than the length of the guide groove 11. The sliding groove 12 is located at the left end of the traveling frame 1. The right end of the sliding groove 12 has an inclined transition surface so that the push rod 5 can slide out of the sliding groove 12. The lower end of the push rod 5 is equipped with a ball to reduce the friction between the push rod 5 and the sliding groove 12 or the traveling frame 1.

[0037] In the above scheme, as the main trolley 2 moves toward the right end, the main trolley 2 drives the auxiliary trolley 3 to move synchronously through the conical disk 61 and the locking block 42. After the auxiliary trolley 3 moves, the push rod 5 in the mounting groove 33 moves from the left end of the slide groove 12 to the right end. After the push rod 5 separates from the slide groove 12, the push rod 5 rises and enters the locking groove 603, thereby limiting the position of the insertion rod 6.

[0038] When the main trolley 2 is used alone, it is necessary to separate the main trolley 2 and the auxiliary trolley 3. The main trolley 2 moves toward the left end of the traveling frame 1. Since the push rod 5 is located in the slot 603, under the action of the insertion rod 6 and the slot 603, the main trolley 2 will not continue to move toward the mounting slot 33 when it moves toward the left end. This causes the main trolley 2 to push the auxiliary trolley 3 to move to the left end. When the push rod 5 moves to the slide 12, the push rod 5 moves downward under its own weight. The push rod 5 disengages from the slot 603, releasing the position restriction on the insertion rod 6.

[0039] At this time, the main trolley 2 pushes the auxiliary trolley 3 to the leftmost end of the traveling frame 1. The auxiliary trolley 3 remains stationary. The main trolley 2 continues to drive the insertion rod 6 to move toward the inside of the mounting slot 33. When the sliding ring 62 contacts the locking block 42, the sliding ring 62 uses the inclined surface of the locking block 42 to make the two locking blocks 42 move back and forth again, so that the sliding ring 62 breaks through the locking block 42.

[0040] Then the main trolley 2 moves to the right, the sliding ring 62 contacts the conical disk 61, the elastic element 63 stretches its side length, and under the action of the inclined surface on the sliding ring 62, the sliding ring 62 and the conical disk 61 break through the restriction of the locking block 42 and move out of the mounting groove 33, thereby releasing the connection between the main trolley 2 and the auxiliary trolley 3.

[0041] The working principle of this utility model:

[0042] In the initial state, the auxiliary trolley 3 is located at the leftmost end of the traveling frame 1, and the main trolley 2 and the auxiliary trolley 3 are separated. The main trolley 2 is responsible for the main work. When the main trolley 2 and the auxiliary trolley 3 need to be used together, the main trolley 2 moves toward the auxiliary trolley 3, and the insert rod 6 on the main trolley 2 is inserted into the mounting slot 33. The conical disc 61 on the insert rod 6 contacts the locking block 42. Under the action of the inclined surface of the locking block 42, the conical disc 61 pushes the two locking blocks 42 to move in opposite directions and breaks through the locking block 42. The locking block 42 is reset under the action of the elastic telescopic rod 41 to limit the position of the conical disc 61, so that the main trolley 2 and the auxiliary trolley 3 are connected, so that the main trolley 2 can drive the auxiliary trolley 3 to move synchronously toward the right end.

[0043] After the auxiliary trolley 3 moves, the push rod 5 in the mounting groove 33 moves from the left end to the right end of the slide groove 12. After the push rod 5 separates from the slide groove 12, the push rod 5 rises and enters the slot 603, thereby limiting the position of the insertion rod 6.

[0044] When the main trolley 2 needs to be used alone, the main trolley 2 and the auxiliary trolley 3 need to be separated. The main trolley 2 moves towards the left end of the traveling frame 1. Since the push rod 5 is located in the slot 603, under the action of the insert rod 6 and the slot 603, the main trolley 2 will not continue to move towards the mounting slot 33 when it moves towards the left end. This prevents the insert rod 6 from continuing to move towards the mounting slot 33 when the main trolley 2 moves to the left, so that the main trolley 2 pushes the auxiliary trolley 3 to move to the left end. When the push rod 5 moves to the slide 12, the push rod 5 moves downward under its own weight. The push rod 5 disengages from the slot 603, releasing the position restriction on the insert rod 6.

[0045] At this time, the main trolley 2 pushes the auxiliary trolley 3 to the leftmost end of the traveling frame 1. The auxiliary trolley 3 remains stationary. The main trolley 2 continues to drive the insertion rod 6 to move toward the inside of the mounting slot 33. After the sliding ring 62 contacts the locking block 42, the sliding ring 62 causes the two locking blocks 42 to move back and forth again through the locking block 42, so that the sliding ring 62 breaks through the locking block 42.

[0046] Subsequently, the main trolley 2 moves to the right, the sliding ring 62 contacts the conical disk 61, and the elastic element 63 stretches and becomes longer. Under the action of the inclined surface on the sliding ring 62, the sliding ring 62 and the conical disk 61 break through the restriction of the locking block 42 and move out of the mounting groove 33, thereby releasing the connection between the main trolley 2 and the auxiliary trolley 3. When the insertion rod 6 moves out of the mounting groove 33, the sliding ring 62 resets under the action of the elastic element 63, and the sliding ring 62 maintains a distance from the conical disk 61 again.

[0047] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A hook trolley splitting mechanism for a hook bridge crane, comprising a trolley frame, wherein a main trolley and an auxiliary trolley are slidably disposed above the trolley frame, characterized in that, An installation structure for connecting the main trolley and the auxiliary trolley is provided between them. The installation structure includes two positioning units and two insertion rods. The two positioning units correspond to the two insertion rods respectively. The two insertion rods are symmetrically fixed on the left side of the main trolley. The insertion rods are arranged along the sliding direction of the main trolley. A conical disk is fixedly connected to the left end of the insertion rod, and a sliding ring is slidably arranged on the insertion rod.

2. The hook trolley disassembly mechanism for a hook bridge crane according to claim 1, characterized in that: The positioning unit includes two elastic telescopic rods. The right end of the auxiliary trolley has two symmetrically arranged mounting slots. The elastic telescopic rods are installed in the mounting slots and are arranged along the width of the mounting slots. The two elastic telescopic rods are fixedly connected to a locking block at their opposite ends.

3. The hook trolley disassembly mechanism for a hook bridge crane according to claim 2, characterized in that: The locking block is inclined towards the side facing the insertion rod, while the side of the locking block away from the insertion rod is flat.

4. The hook trolley split mechanism of claim 3, characterized in that: The insertion rod includes a round rod and a rectangular rod. The rectangular rod is fixed on the main trolley, the round rod is connected to the rectangular rod, the conical disc is fixed to the left end of the round rod, the conical disc is slidably connected to the round rod, and an elastic element is provided between the sliding ring and the rectangular rod.

5. The hook trolley split mechanism of claim 4, characterized in that: The lower end of the rectangular rod is provided with a slot, and the right side of the positioning unit is provided with a top rod that is slidably disposed in the mounting groove. The top rod slides in the up and down direction, and the lower end of the top rod passes through the mounting groove. The top rod corresponds to the slot.

6. The hook trolley disassembly mechanism for a hook bridge crane according to claim 5, characterized in that: A sliding groove is provided above the overhead crane frame, and the lower end of the top rod corresponds to the sliding groove. The right end of the sliding groove has an inclined transition surface.

7. The hook trolley disassembly mechanism for a hook bridge crane according to claim 4, characterized in that: The sliding ring is conical, and the inclined surface of the sliding ring is opposite to the inclined surface of the conical disk.

8. The hook trolley disassembly mechanism for a hook bridge crane according to claim 6, characterized in that: The lower end of the push rod is equipped with ball bearings.

9. The hook trolley disassembly mechanism for a hook bridge crane according to claim 1, characterized in that: Both the main trolley and the auxiliary trolley are equipped with pulleys underneath, and guide grooves corresponding to the pulleys are opened on both sides of the traveling frame.

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