Mountainous terrain caterpillar crane

Abstract

A mountain ground crawler crane, including a vehicle body, a moving module, a hoisting arm, a cockpit, a counterweight module; wherein the moving module is provided with the vehicle body above, the vehicle body is provided with the cockpit, the vehicle body is provided with the hoisting arm in front, and the vehicle body is provided with the counterweight module behind; the counterweight module includes a first basic counterweight, a second basic counterweight, a connecting frame, an additional counterweight, an abutment table, a vertical plate, an L-shaped plate, a support, a bent plate, a connecting plate, a detection and early warning module, wherein the first basic counterweight is connected with the second basic counterweight above.

Description

Technical Field

[0001] This invention relates to the field of power grid construction equipment, and more specifically to a mountain crawler crane. Background Technology

[0002] Erecting high-altitude power grids requires cranes. Currently, domestic tower erection methods include four types: truck crane tower erection, crawler crane tower erection, suspended gantry crane tower erection, and ground-mounted gantry crane tower erection. While these four methods are technically mature, for the erection of towers exceeding 60 meters in height for 500 kV and below voltage levels (towers over 60 meters account for 30%), conventional 25-ton truck cranes or crawler cranes are insufficient to independently complete the lifting operation. They require the assistance of gantry cranes, resulting in increased personnel input, longer working hours at height, higher labor intensity, and higher operational risks. In practice, counterweights are used to balance the crane boom when erecting towers over 60 meters in height.

[0003] In engineering practice, the following problems exist:

[0004] Question 1: With the development of counterweight technology, various types of stacked counterweights are being used more and more. However, the problem with stacked counterweights is that on-site assembly of stacked counterweights requires a quick-connect structure, but the quick-connect structure has poor stability. In addition to the basic counterweight, the sub-counterslants that are stacked extra during operation are unstable and prone to shaking.

[0005] Question 2: The unstable connection structure is more prone to wear as the counterweight sways. Once wear occurs, there is no "wear sensor" component in the current technology, and even if there were, the cost would be relatively high.

[0006] Question 3: Existing sensors are single sensors and cannot integrate additional functions such as buffering. Summary of the Invention

[0007] To overcome the above problems, the present invention proposes a solution that addresses multiple problems simultaneously.

[0008] The technical solution adopted by the present invention to solve its technical problem is: a mountain tracked crane, including a vehicle body, a moving module, a lifting boom, a cab, and a counterweight module; wherein the vehicle body is arranged above the moving module, the cab is arranged on the vehicle body, the lifting boom is arranged in front of the vehicle body, and the counterweight module is arranged in rear of the vehicle body.

[0009] The counterweight module includes a first basic counterweight, a second basic counterweight, a connecting frame, an additional counterweight, a contact platform, a vertical plate, an L-shaped plate, a support, a bending plate, a connecting plate, and a detection and early warning module.

[0010] The first basic counterweight is connected to a second basic counterweight. Both basic counterweights include a middle part, a left part, and a right part. A connecting frame is connected to the second basic counterweight and is connected to the vehicle body. An additional counterweight is provided on each side of the connecting frame. Each of the two additional counterweights is connected to the upper surface of the second basic counterweight through two supports. An abutment platform is provided on each side of the connecting frame. The abutment platform abuts against the additional counterweight. The position of the abutment platform abutting against the additional counterweight and the position of the two supports form a triangle. An L-shaped plate is provided on the abutment platform. A vertical plate is provided on the upper surface of the second basic counterweight. A bending plate is connected to the connecting frame. The L-shaped plate, the vertical plate, and the bending plate are connected by a connector. A first elastic element is provided between the vertical plate and the abutment platform.

[0011] Each of the two additional counterweights has two connecting plates on its upper surface, for a total of four connecting plates. Each of the four connecting plates has a through hole, and the four through holes are coaxially arranged. A connecting rod passes through the four through holes, and nuts are provided at both ends of the connecting rod.

[0012] A detection and early warning module is installed above the contact platform. The detection and early warning module includes an umbrella section, a cylinder, a telescopic rod, a connecting column, bolts, and a displacement detection element. The cylinder sits on the upper surface of the contact platform and contains a second elastic element that provides an upward thrust to the telescopic rod. The displacement detection element is installed on the cylinder. A connecting column is installed above the telescopic rod, and an umbrella section is installed above the connecting column. The umbrella section includes an outer plate and an inner plate. Three bolts pass through the inner plate and the outer plate and connect to the additional counterweight. One end of the umbrella section extends to form a first arm, and the other end extends to form a second arm. One bolt is located at the end of the first arm, the second bolt is located at the end of the second arm, and the third bolt is arranged in a triangle with the other two bolts. Each additional counterweight includes an inner layer and an outer layer.

[0013] When all three bolts are loosened, the telescopic rod moves upward under the action of the second elastic element. The displacement detection element detects the displacement of the telescopic rod and sends a signal to the controller, which then controls the alarm to sound.

[0014] Preferably, a third elastic element is provided between the inner panel and the outer panel.

[0015] Preferably, the outer interlayer is filled with liquid.

[0016] Preferably, the inner interlayer is solid.

[0017] Preferably, the inner interlayer is filled with sand and gravel.

[0018] Preferably, three bolts are connected to the wall of the inner interlayer.

[0019] Preferably, the lifting arm is telescopic.

[0020] Preferably, the mobile module includes tracks.

[0021] Preferably, the mobile module is connected to the vehicle body via a turntable.

[0022] Preferably, when the alarm sounds, the wear condition of the support is checked.

[0023] The beneficial effects and inventive points are as follows:

[0024] Invention Point 1: Addressing the issue raised in the background technology that the basic counterweight is stable but the additional counterweight is unstable, three sets of designs were implemented for the additional counterweight to increase stability:

[0025] First, two symmetrical sub-weights (i.e., additional weights) are set in the X direction. Each sub-weight is placed at both ends of the base weight. Two lugs are set above each of the two sub-weights, for a total of four lugs aligned. The four lugs are connected by a connecting rod and nuts at both ends, so that the two sub-weights and the connecting rod in the middle form a whole. The relative action between them reduces the tendency of the sub-weights to fall outward and improves the stability of the sub-weights.

[0026] Secondly, the sub-counterweight is divided into two layers, an inner and an outer layer. The inner layer can be solid or filled with sand and gravel. After the inner layer is filled, the outer layer is filled. The outer layer can be filled with liquid. Therefore, the center of gravity of the sub-counterweight is inward, which increases stability.

[0027] Third, two sets of triangular support weights are provided: the larger triangle forms the abutment platform and the two supports below; the smaller triangle consists of three bolts on the umbrella arm. The larger and smaller triangles are positioned vertically. This improves the stability of the support.

[0028] In the Z direction, since the counterweight is often quite heavy, the possibility of it bouncing upwards is low, so there is no need for too much design and it can be simply connected by a support.

[0029] Second point of invention: Addressing the issue raised in the background technology regarding the lack of a "wear sensor":

[0030] It is well known that bolted connections are prone to loosening in large mechanical equipment. This invention does not treat this as a defect, but rather as an advantage. It utilizes the tendency of bolted connections to loosen and transforms it into part of the "support wear / counterweight misalignment sensor assembly":

[0031] Three bolts are installed on the umbrella arm, which are connected to the sub-counterweight. Compared to the connection between the lower end of the sub-counterweight and the support, the bolt connection is easier to loosen. With prolonged use, when all three bolts loosen, the connection between the umbrella arm and the sub-counterweight will detach, and the umbrella arm will spring up under the action of the elastic mechanism below. A displacement sensor is installed on the corresponding cylinder. The displacement sensor detects that the elastic mechanism has lifted the arm and then alarms, informing the operator of the bolt detachment problem. This provides an early warning sensor. Although it cannot directly detect support wear, the fact that all three bolts have fallen off can indicate that there has been a temporary large shaking or that the connection has fallen off due to long-term use, thus giving the operator an early warning to check the support wear.

[0032] To prevent the bolts from falling off too quickly, three bolts were designed on the umbrella arm in a triangular shape. Triangles are stable, so the triangular bolt design is more stable than a single bolt design, extending the service life of the bolt assembly. Thus, it not only serves as a "support wear / counterweight misalignment sensor assembly" but also has a certain connection strength.

[0033] Once staff receive an alarm and discover that the bolt has come loose, the vibration has already reached a certain level. At this point, check if the support is worn; if not, replace the bolt.

[0034] It utilizes a set of auxiliary fixing bolts, but the auxiliary fixing function of the three bolts is not important. What is important is that the three bolts falling off serve as an early warning function of the "wear / displacement sensor". At this time, the sub-counterweight may have already deviated from its position. If there were no three bolts, it would be too late to deal with it after the sub-counterweight has deviated from its position or the support has worn off.

[0035] Thirdly, and more importantly, the three bolts are connected to the Z-axis elastic mechanism via the umbrella arm, which acts as a buffer in the Z-axis direction of the counterweight, thus achieving a buffering effect within a single "wear / displacement sensor"; while existing sensors do not provide a buffering effect within a single sensor.

[0036] The umbrella arm consists of inner and outer plates, with a spring between the two plates, which further improves the X-axis counterweight buffering effect.

[0037] Springs are also provided on the front and rear sides of the abutment platform. The springs, together with the protruding plates on the bracket and the base counterweight, improve the buffering effect of the sub-counterweight in the Y direction.

[0038] Fourthly, the invention is complemented by a convex-concave fit between the abutment platform and the sub-counterweight, and three bolts are used to connect the sub-counterweight. Since there may be connection holes at the aforementioned connection points, the inner layer of the sub-counterweight is solid or filled with sand and gravel to prevent leakage of the filling liquid through the connection holes. Attached Figure Description

[0039] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0040] Figure 1 This is a complete 3D model of a mountain crawler crane.

[0041] Figure 2 This is a simplified plan view of the basic structure of a mountain crawler crane.

[0042] Figure 3 This is a 3D diagram of the counterweight module.

[0043] Figure 4 This is a schematic diagram of the detection and early warning module.

[0044] Figure 5 This is a diagram of the additional counterweight.

[0045] The reference numerals in the figure are as follows:

[0046] 1. Vehicle body, 2. Mobile module, 3. Lifting boom, 4. Cabin, 5. Counterweight module, 6. First basic counterweight, 7. Second basic counterweight, 8. Connecting frame, 9. Additional counterweight, 10. Abutment platform, 11. Vertical plate, 12. L-shaped plate, 13. Support, 14. Bending plate, 15. Connecting plate, 16. Detection and early warning module, 17. Outer plate, 18. Inner plate, 19. Cylinder, 20. Telescopic rod, 21. Connecting column, 22. First boom section, 23. Second boom section, 24. Bolt, 25. Displacement detection element, 26. Inner layer, 27. Outer layer. Detailed Implementation

[0047] As shown in the figure: A mountain tracked crane includes a vehicle body, a mobile module, a lifting boom, a cab, and a counterweight module; wherein the vehicle body is located on top of the mobile module, the cab is located on the vehicle body, the lifting boom is located at the front of the vehicle body, and the counterweight module is located at the rear of the vehicle body.

[0048] The counterweight module includes a first basic counterweight, a second basic counterweight, a connecting frame, an additional counterweight, a contact platform, a vertical plate, an L-shaped plate, a support, a bending plate, a connecting plate, and a detection and early warning module.

[0049] The first basic counterweight is connected to a second basic counterweight. Both basic counterweights include a middle part, a left part, and a right part. A connecting frame is connected to the second basic counterweight and connected to the vehicle body. An additional counterweight is set on each side of the connecting frame. Each of the two additional counterweights is connected to the upper surface of the second basic counterweight through two supports. An abutment platform is set on each side of the connecting frame. The abutment platform abuts against the additional counterweight. The position of the abutment platform abutting against the additional counterweight and the position of the two supports form a triangle. An L-shaped plate is set on the abutment platform. A vertical plate is set on the upper surface of the second basic counterweight. A bent plate is connected to the connecting frame. The L-shaped plate, the vertical plate, and the bent plate are connected by a connector. The vertical plate is located on the innermost side. A first elastic element is set between the vertical plate and the abutment platform.

[0050] Each of the two additional counterweights has two connecting plates on its upper surface, for a total of four connecting plates. Each of the four connecting plates has a through hole, and the four through holes are coaxially arranged. A connecting rod passes through the four through holes, and nuts are provided at both ends of the connecting rod.

[0051] A detection and early warning module is installed above the contact platform. The detection and early warning module includes an umbrella section, a cylinder, a telescopic rod, a connecting column, bolts, and a displacement detection element. The cylinder sits on the upper surface of the contact platform and contains a second elastic element that provides an upward thrust to the telescopic rod. The displacement detection element is installed on the cylinder. A connecting column is installed above the telescopic rod, and an umbrella section is installed above the connecting column. The umbrella section includes an outer plate and an inner plate. Three bolts pass through the inner and outer plates and connect to the additional counterweight. One end of the umbrella section extends to form a first arm, and the other end extends to form a second arm. One bolt is located at the end of the first arm, the second bolt is located at the end of the second arm, and the third bolt is arranged in a triangle with the other two bolts. Each additional counterweight includes an inner layer and an outer layer. The three bolts are located near the inner layer.

[0052] When all three bolts are loosened, the telescopic rod moves upward under the action of the second elastic element. The displacement detection element detects the displacement of the telescopic rod and sends a signal to the controller, which then activates the alarm.

[0053] As shown in the diagram: A third elastic element is installed between the inner and outer plates. The outer interlayer is filled with liquid. The inner interlayer is solid. The inner interlayer is filled with sand and gravel. Three bolts are connected to the wall of the inner interlayer. The boom is telescopic. The moving module includes tracks. The moving module is connected to the vehicle body via a turntable. When the alarm sounds, check the wear of the supports.

[0054] The above detailed description is a specific description of feasible embodiments of the present invention. These embodiments are not intended to limit the patent scope of the present invention. All equivalent implementations or modifications that do not depart from the present invention should be included in the patent scope of this case.

Claims

1. A mountain tracked crane, comprising a vehicle body, a mobile module, a boom, a cab, and a counterweight module; wherein the vehicle body is disposed above the mobile module, the cab is disposed on the vehicle body, the boom is disposed at the front of the vehicle body, and the counterweight module is disposed at the rear of the vehicle body. Its features are: The counterweight module includes a first basic counterweight, a second basic counterweight, a connecting frame, an additional counterweight, a contact platform, a vertical plate, an L-shaped plate, a support, a bending plate, a connecting plate, and a detection and early warning module. The first basic counterweight is connected to a second basic counterweight. Both basic counterweights include a middle part, a left part, and a right part. A connecting frame is connected to the second basic counterweight and is connected to the vehicle body. An additional counterweight is provided on each side of the connecting frame. Each of the two additional counterweights is connected to the upper surface of the second basic counterweight through two supports. An abutment platform is provided on each side of the connecting frame. The abutment platform abuts against the additional counterweight. The position of the abutment platform abutting against the additional counterweight and the position of the two supports form a triangle. An L-shaped plate is provided on the abutment platform. A vertical plate is provided on the upper surface of the second basic counterweight. A bending plate is connected to the connecting frame. The L-shaped plate, the vertical plate, and the bending plate are connected by a connector. A first elastic element is provided between the vertical plate and the abutment platform. Each of the two additional counterweights has two connecting plates on its upper surface, for a total of four connecting plates. Each of the four connecting plates has a through hole, and the four through holes are coaxially arranged. A connecting rod passes through the four through holes, and nuts are provided at both ends of the connecting rod. A detection and early warning module is installed above the contact platform. The detection and early warning module includes an umbrella section, a cylinder, a telescopic rod, a connecting column, bolts, and a displacement detection element. The cylinder sits on the upper surface of the contact platform and contains a second elastic element that provides an upward thrust to the telescopic rod. The displacement detection element is installed on the cylinder. A connecting column is installed above the telescopic rod, and an umbrella section is installed above the connecting column. The umbrella section includes an outer plate and an inner plate. Three bolts pass through the inner plate and the outer plate and connect to the additional counterweight. One end of the umbrella section extends to form a first arm, and the other end extends to form a second arm. One bolt is located at the end of the first arm, the second bolt is located at the end of the second arm, and the third bolt is arranged in a triangle with the other two bolts. Each additional counterweight includes an inner layer and an outer layer. When all three bolts are loosened, the telescopic rod moves upward under the action of the second elastic element. The displacement detection element detects the displacement of the telescopic rod and sends a signal to the controller, which then controls the alarm to sound.

2. The mountain crawler crane according to claim 1, characterized in that: A third elastic element is provided between the inner panel and the outer panel.

3. A mountain crawler crane according to claim 1, characterized in that: The outer interlayer is filled with liquid.

4. A mountain crawler crane according to claim 3, characterized in that: The inner layer is solid.

5. A mountain crawler crane according to claim 3, characterized in that: The inner interlayer is filled with sand and gravel.

6. A mountain crawler crane according to claim 1, characterized in that: Three bolts are attached to the wall of the inner interlayer.

7. A mountain crawler crane according to claim 1, characterized in that: The crane arm is telescopic.

8. A mountain crawler crane according to claim 1, characterized in that: The mobile module includes tracks.

9. A mountain crawler crane according to claim 1, characterized in that: The mobile module is connected to the vehicle body via a turntable.

10. A mountain crawler crane according to claim 1, characterized in that: When the alarm sounds, check the wear condition of the support.

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