Rotating and sliding synchronous balancing weight system and use method

Abstract

The invention discloses a rotating and sliding synchronous counterweight system and a using method, and belongs to the field of engineering machinery, and the rotating and sliding synchronous counterweight system comprises a rotating and sliding synchronous mechanism and a counterweight block fixed on the rotating and sliding synchronous mechanism; the rotating and sliding synchronizing mechanism is configured to drive the counterweight block to synchronously execute rotating motion and sliding motion so as to change the gravity center position and the rotating radius of the counterweight block; the rotating and sliding synchronizing mechanism drives the counterweight block to rotate and slide on the counterweight support at the same time, so that the rotating radius and the gravity center position of the counterweight are changed, the larger displacement distance is achieved, the weight of the counterweight can be reduced under the same condition, and the same hoisting performance is achieved.

Description

Technical Field

[0001] The invention relates to a sliding synchronous counterweight system and a use method thereof, and belongs to the field of engineering machinery. Background Art

[0002] Cranes are widely used for hoisting operations in wind farms, large petrochemical projects, and large bridges. They are also increasingly being used in urban and factory construction. Customers are demanding higher and higher performance and spatial adaptability from cranes. To improve crane lifting performance, counterweights are increasingly required to increase the crane's anti-overturning moment, leading to increased manufacturing and transportation costs.

[0003] The prior art provides a sliding counterweight, which mainly includes a sliding mechanism and a counterweight. The sliding mechanism includes a bracket and a sliding structure. The counterweight is assembled on the sliding mechanism. The counterweight in this mechanism can slide back and forth through the sliding mechanism to achieve the position change of the counterweight. This prior art has the following disadvantages: The sliding counterweight is limited by the structural stroke, and the displacement distance of the counterweight is limited.

[0004] If the displacement distance is increased through multi-stage sliding, the reliability of the counterweight system will be greatly reduced. Summary of the Invention

[0005] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a sliding synchronous counterweight system and method of use, which realizes variable center of gravity position and rotation radius of the counterweight through a sliding synchronous mechanism, thereby achieving a larger displacement distance of the counterweight.

[0006] To achieve the above object, the present invention is implemented by adopting the following technical solutions: In a first aspect, the present invention provides a sliding synchronous counterweight system, comprising: A sliding synchronization mechanism and a counterweight fixed thereon; The rotation and sliding synchronization mechanism is configured to drive the balancing weight to synchronously perform rotational motion and sliding motion, so as to change the center of gravity position and the rotation radius of the balancing weight.

[0007] Furthermore, the rotation and sliding synchronization mechanism includes: a bracket, a slide, a telescopic device, a connecting device and a base, wherein: The bracket and the slide are connected via a sliding assembly, so that the slide can slide relative to the bracket; The base is hinged to the slide via a first hinge shaft, so that the base can rotate relative to the slide; One end of the telescopic device is connected to the bracket, and the other end is connected to the base or the slide via a third hinge shaft to provide driving force; One end of the connecting device is connected to the bracket, and the other end is connected to the base through the second hinge shaft to form a linkage mechanism; The telescopic movement of the telescopic device drives the base to rotate, and at the same time drives the slide to slide through the connecting device, thereby realizing the compound movement of the balancing weight block.

[0008] Furthermore, the sliding assembly includes a sliding rail provided on the bracket and a sliding groove provided on the slide, and the sliding rail and the sliding groove cooperate with each other.

[0009] Furthermore, the sliding assembly includes a slide rail provided on the slide frame and a slide groove provided on the bracket, and the slide rail and the slide groove cooperate with each other.

[0010] Furthermore, the base includes a first hinge hole, a second hinge hole and a third hinge hole, the first hinge hole is used to connect the second hinge shaft, the second hinge hole is used to connect the first hinge shaft; the third hinge hole is used to connect the third hinge shaft.

[0011] Furthermore, the connecting device is a rigid mechanism or a retractable mechanism.

[0012] Furthermore, the sliding assembly is a rack and pinion mechanism, a pulley mechanism or a rolling guide pair.

[0013] Furthermore, the slide is a single-stage slide or a multi-stage slide.

[0014] Furthermore, the telescopic device is a single-stage telescopic mechanism or a multi-stage telescopic mechanism.

[0015] In a second aspect, the present invention provides a method for using the sliding synchronous counterweight system according to any one of the above items, comprising: In the initial state, the telescopic device is in the fully retracted or fully extended position; Start the telescopic device to extend or retract, driving the base and the counterweight to rotate around the hinge axis; The rotation of the base drives the slide to slide along the sliding assembly through the connecting device; The balancing weight realizes the coordinated change of the center of gravity position and the turning radius under the compound motion of rotation and sliding.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides a rotating and sliding synchronous counterweight system and a method of use, in which a rotating and sliding synchronous mechanism drives the counterweight block to rotate and slide simultaneously on the counterweight bracket, thereby changing the counterweight rotation radius and the center of gravity position, achieving a larger displacement distance, and reducing the counterweight weight under the same conditions to achieve the same lifting performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1This is a schematic diagram of the structure of the sliding synchronous counterweight system provided by the embodiment of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the structure of the sliding synchronous counterweight system provided by the embodiment of the present invention. Figure 2 ; Figure 3 1 is a schematic structural diagram of a slide rail, a second hinge shaft, and a third hinge shaft provided in an embodiment of the present invention; Figure 4 is a structural schematic diagram of a slideway and a first hinge shaft provided in an embodiment of the present invention; Figure 5 1 is a schematic structural diagram of a first hinge hole, a second hinge hole, and a third hinge hole provided in an embodiment of the present invention; Figure 6 is a schematic structural diagram of the first position provided by an embodiment of the present invention; Figure 7 It is a structural diagram of the second position provided by an embodiment of the present invention.

[0018] In the figure: 1. sliding synchronization mechanism; 2. counterweight; 11. bracket; 12. slide; 13. telescopic device; 14. connecting device; 15. base; 111. slide rail; 112. second hinge axis; 113. third hinge axis; 121. slide groove; 122. first hinge axis; 151. first hinge hole; 152. second hinge hole; 153. third hinge hole. DETAILED DESCRIPTION

[0019] The present invention will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention and are not intended to limit the scope of protection of the present invention.

[0020] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0021] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0022] Example 1. This example introduces a rotating and sliding synchronous counterweight system. The system drives the counterweight block to rotate and slide simultaneously on the counterweight bracket through a rotating and sliding synchronous mechanism, thereby changing the counterweight's rotation radius and center of gravity position to achieve a larger displacement distance.

[0023] The counterweight system consists of a sliding synchronization mechanism 1 and a counterweight block 2. Figure 1 As shown in the figure, the sliding synchronization mechanism 1 is the main load-bearing part and functional implementation part of the counterweight system. The sliding synchronization mechanism 1 is fixedly connected to the vehicle turntable. The counterweight block 2 is assembled on the sliding synchronization mechanism 1.

[0024] The sliding synchronization mechanism 1 includes a bracket 11, a slide 12, a telescopic device 13, a connecting device 14 and a base 15. Figure 2 As shown. The bracket 11 and the slide 12 are connected by the slide rail 111 and the slide groove 121, and can slide relative to each other. The base 15 is connected to the slide 12 by the first hinge shaft 122, and the base 15 can rotate relative to the slide 12. One end of the telescopic device 13 is connected to the bracket 11, and the other end is connected to the base 15 or the slide 12 (the telescopic device 13 and the hinge point are not limited to the positions shown in the figure). The two ends of the connecting device 14 are respectively connected to the bracket 11 and the base 15, and when the base 15 rotates, the slide 12 is driven to slide. The telescopic device 13 provides power for the sliding synchronization mechanism 1.

[0025] The bracket 11 includes a slide rail 111, a second hinge shaft 112 and a third hinge shaft 113. Figure 3 As shown. Slide rail 111 serves as a relative sliding mechanism between bracket 11 and slide 12, providing guidance and support for the sliding mechanism. Second hinge shaft 112 is used to connect to connecting device 14, which can rotate about second hinge shaft 112. Third hinge shaft 113 is used to connect to telescopic device 13.

[0026] The slide 12 includes a slide slot 121 and a first hinge shaft 122. Figure 4 The slide groove 121 cooperates with the slide rail 111 to realize the sliding of the slide 12. The first hinge shaft 122 is used to connect the base 15, and the base 15 can rotate around the first hinge shaft 122. The slide 12 can be a single-stage slide or a multi-stage slide.

[0027] One end of the telescopic device 13 is connected to the bracket 11, and the other end is connected to the base 15 or the slide 12 (the telescopic device 13 and the hinge point are not limited to the positions shown in the figure). The movement of the telescopic device 13 drives the base 15 to rotate, and the rotation of the base 15 also drives the slide 12 to slide.

[0028] One end of the connecting device 14 is connected to the bracket 11, and the other end is connected to the base 15. When the base 15 rotates, the slide 12 is driven to slide through the connection of the connecting device 14. The connecting device 14 can be a rigid mechanism or a retractable mechanism.

[0029] The base 15 includes a first hinge hole 151, a second hinge hole 152 and a third hinge hole 153. Figure 5 The first hinge hole 151 is used to connect the connecting device 14. The second hinge hole 152 is used to connect the sliding frame 12. The third hinge hole 153 is used to connect the telescopic device 13.

[0030] Counterweight displacement method: The movement of the telescopic device 13 in the rotation-sliding synchronization mechanism 1 drives the base 15 and the counterweight 2 to rotate, achieving changes in the center of gravity and the rotation radius of the counterweight 2. Simultaneously, the connecting device 14 connects the bracket 11 and the base 15, forming a linkage mechanism with the slide 12 to drive the slide 12 to slide, achieving a greater displacement distance for the counterweight 2.

[0031] like Figure 6 、 Figure 7 As shown in the figure, the specific method of balancing weight displacement is as follows: Before the work starts, the base 15 is in the first position or (as Figure 6 ) or the second position (as shown Figure 7 As shown), at this time, the telescopic device 13 is in a fully retracted (fully extended) state.

[0032] At the beginning of work, the telescopic device 13 extends (contracts), driving the base 15 and the counterweight 2 to rotate toward the rear side (front side) of the bracket 11. Since the bracket 11, the slide 12, the connecting device 14 and the base 15 form a connecting rod mechanism, the rotation of the base 15 drives the slide 12 to slide, so that the base 15 and the counterweight 2 slide with the slide 12 while rotating, further increasing the displacement distance of the counterweight 2.

[0033] The counterweight system of the present invention is composed of a stable and reliable connection mechanism consisting of a rotation and sliding synchronization mechanism 1 and a counterweight block 2. The base 15 rotates while driving the slide 12 to slide, so that the counterweight block 2 can rotate and slide at the same time, thereby changing the center of gravity position and the rotation radius of the counterweight, and achieving a larger displacement distance of the counterweight.

[0034] Among them, this embodiment can further use the following alternatives: 1. Use a gear rack or pulley mechanism instead of a slide rail and slot mechanism; 2. Use rolling guide rails instead of sliding guide rails; 3. The carriage 12 can be a single-stage or multi-stage carriage; 4. The connecting device 14 can be a rigid mechanism or a retractable mechanism; 5. The first hinge shaft 112, the second hinge shaft 112, the third hinge shaft 123, the first hinge hole 151, the second hinge hole 152, the third hinge hole 153, the slide rail 111, and the slide groove 121 in the present invention are not limited to the positions shown in the schematic diagram; 6. The positions of the slide rail 111 and the slide groove 121 in the present invention can be used interchangeably; 7. All connection positions in this description are not limited to the forms shown in the schematic diagram. They can be assembled or welded, and the connection direction or connection form can be changed.

[0035] 8. The telescopic device can be single-stage or multi-stage.

[0036] Example 2: This example provides a method for using the sliding synchronous counterweight system according to any one of the examples 1, including: In the initial state, the telescopic device is in the fully retracted or fully extended position; Start the telescopic device to extend or retract, driving the base and the counterweight to rotate around the hinge axis; The rotation of the base drives the slide to slide along the sliding assembly through the connecting device; The balancing weight realizes the coordinated change of the center of gravity position and the turning radius under the compound motion of rotation and sliding.

[0037] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A sliding synchronous counterweight system, characterized in that: include: A sliding synchronization mechanism (1) and a counterweight (2) fixed thereon; The rotation and sliding synchronization mechanism (1) is configured to drive the balancing weight (2) to synchronously perform rotational motion and sliding motion, so as to change the center of gravity position and the rotation radius of the balancing weight (2).

2. The sliding synchronous counterweight system according to claim 1, characterized in that: The rotation and sliding synchronization mechanism (1) comprises: a bracket (11), a slide (12), a telescopic device (13), a connecting device (14) and a base (15), wherein: The bracket (11) and the slide (12) are connected via a sliding assembly, so that the slide (12) can slide relative to the bracket (11); The base (15) is hinged to the slide (12) via a first hinge shaft (122), so that the base (15) can rotate relative to the slide (12); One end of the telescopic device (13) is connected to the bracket (11), and the other end is connected to the base (15) or the slide (12) via a third hinge shaft (113), for providing driving force; One end of the connecting device (14) is connected to the bracket (11), and the other end is connected to the base (15) via a second hinge shaft (112), forming a linkage mechanism; The telescopic movement of the telescopic device (13) drives the base (15) to rotate, and at the same time drives the slide (12) to slide through the connecting device (14), thereby realizing the combined movement of the balancing weight (2).

3. The sliding synchronous counterweight system according to claim 2, characterized in that: The sliding assembly comprises a sliding rail (111) provided on the bracket (11) and a sliding groove (121) provided on the slide (12), wherein the sliding rail (111) and the sliding groove (121) cooperate with each other.

4. The sliding synchronous counterweight system according to claim 2, characterized in that: The sliding assembly comprises a slide rail (111) provided on the slide frame (12) and a slide groove (121) provided on the bracket (11), wherein the slide rail (111) and the slide groove (121) cooperate with each other.

5. The sliding synchronous counterweight system according to claim 2, characterized in that: The base (15) comprises a first hinge hole (151), a second hinge hole (152) and a third hinge hole (153), wherein the first hinge hole (151) is used to connect to the second hinge shaft (112), the second hinge hole (152) is used to connect to the first hinge shaft (122); and the third hinge hole (153) is used to connect to the third hinge shaft (113).

6. The sliding synchronous counterweight system according to claim 2, characterized in that: The connecting device (14) is a rigid mechanism or a retractable mechanism.

7. The sliding synchronous counterweight system according to claim 2, characterized in that: The sliding assembly is a gear rack mechanism, a pulley mechanism or a rolling guide pair.

8. The sliding synchronous counterweight system according to claim 2, characterized in that: The slide (12) is a single-stage slide or a multi-stage slide.

9. The sliding synchronous counterweight system according to claim 2, characterized in that: The telescopic device (13) is a single-stage telescopic mechanism or a multi-stage telescopic mechanism.

10. A method for using the sliding synchronous counterweight system according to any one of claims 1 to 9, characterized in that: include: In the initial state, the telescopic device (13) is in a fully retracted or fully extended position; Activating the telescopic device (13) to extend or retract, driving the base (15) and the counterweight (2) to rotate around the hinge shaft (122); The rotation of the base (15) drives the slide (12) to slide along the sliding assembly through the connecting device (14); The balancing weight (2) realizes the coordinated change of the center of gravity position and the turning radius under the compound motion of rotation and sliding.

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