Counterweight telescopic bracket and crane

Abstract

The utility model relates to the technical field of cranes, and discloses a counterweight telescopic support of a crane and the crane, the crane comprises a crane body, and the counterweight telescopic support comprises a sliding support, a fixed support and an adjusting mechanism. The fixed support is arranged on the sliding support in a sliding mode, and a mounting part matched with a crane body is formed at one end of the fixed support. The adjusting mechanism comprises a first linear driving part and a second linear driving part, the first linear driving part is arranged on the fixed support and used for driving the sliding support to slide in the length direction of the fixed support, and the two ends of the second linear driving part are connected with the sliding support and the balance weight correspondingly. The second linear driving piece is used for driving the sliding support and the fixed support to slide together relative to the balance weight in the height direction so as to ensure that the mounting part can be connected with the crane body in a clamped mode or separated from the crane body, and the self-loading and unloading function of the balance weight telescopic support is achieved. The balance weight telescopic support is simple in structure and can be conveniently mounted on or dismounted from the crane.

Description

TECHNICAL FIELD

[0001] The utility model belongs to crane technical field, and specifically relates to a counterweight telescopic support and crane. BACKGROUND

[0002] The counterweight telescopic support structure in prior art is relatively complex, cannot realize self loading and unloading, and usually needs to be assisted by other cranes to realize installation and dismounting, greatly increases the use difficulty of the equipment on site, and also causes the cost of the customer to greatly increase, so the counterweight telescopic support structure in prior art is complex and cannot be conveniently dismounted with the crane. CONTENT OF UTILITY MODEL

[0003] The utility model aims at providing a counterweight telescopic support and crane, and solves the technical problem that the counterweight telescopic support structure in prior art is complex and cannot be conveniently dismounted with the crane.

[0004] In order to realize the above-mentioned purpose, the utility model provides a counterweight telescopic support of crane, and the crane includes a crane body, and the counterweight telescopic support includes:

[0005] A sliding support;

[0006] A fixed support is slidably arranged on the sliding support, and one end of the fixed support is formed with a mounting portion for adapting with the crane body;

[0007] An adjusting mechanism includes a first linear driving part and a second linear driving part, the first linear driving part is arranged on the fixed support and is used for driving the sliding support to slide along the length direction of the fixed support, and the two ends of the second linear driving part are connected with the sliding support and the counterweight respectively, and the second linear driving part is used for driving the sliding support and the fixed support to slide along the height direction relative to the counterweight, so as to connect or separate the mounting portion and the crane body.

[0008] In the embodiment of the utility model, the fixed support includes a support body and slide rails arranged on both sides of the support body along the width direction, the slide rails extend along the length direction of the support body, the sliding support is formed with an avoiding slot for accommodating the slide rails, and the slide rails and the slot wall of the avoiding slot are in sliding fit.

[0009] In the embodiment of the utility model, the side wall of the avoiding slot is provided with a roller frame extending along the length direction, the bottom end of the roller frame is provided with a sliding groove for accommodating a plurality of rollers, the extension direction of the sliding groove is consistent with the extension direction of the slide rail, and the rollers and the slide rail are in sliding fit.

[0010] In the embodiment of the utility model, the sliding support is further provided with a connecting plate, the top end of the roller frame is further provided with a mounting slot in communication with the sliding groove, one end of the connecting plate is detachably connected with the sliding support, and the other end is placed in the mounting slot and detachably connected with the roller frame.

[0011] In the embodiment of the utility model, the sidewall of the avoiding groove includes first avoiding part and second avoiding part, first avoiding part is for the placement of the roller frame, second avoiding part is for the placement of the slide rail, the slide support still includes first guide plate and second guide plate, first guide plate is arranged at the connecting place of first avoiding part and second avoiding part, second guide plate is arranged on the side of second avoiding part away from the roller frame, first guide plate and second guide plate all extend along the length direction of the support body.

[0012] In the embodiment of the utility model, the slide support includes horizontal part and vertical part arranged on both sides of the horizontal part along the length direction, the horizontal part and the two vertical parts enclose the avoiding groove which is open upward, the vertical part is provided with the through hole for installing the second linear driving element.

[0013] In the embodiment of the utility model, the support body is provided with the first mounting ear plate, one end of the first linear driving element is hinged with the first mounting ear plate, and the other end is connected with the vertical part through the connecting rod.

[0014] In the embodiment of the utility model, the counterweight telescopic support further includes the limiting plate installed on the side surface of the fixed support, the number of the limiting plate is multiple and located on both sides of the length direction of the slide rail.

[0015] In the embodiment of the utility model, the counterweight telescopic support further includes the leveling screw, the side surface of the slide support is further provided with multiple second mounting ear plates arranged along the width direction, the second mounting ear plate is provided with the mounting hole for inserting the leveling screw.

[0016] In the embodiment of the utility model, a crane is further provided, which includes the counterweight telescopic support as described above.

[0017] Through the above technical scheme, the counterweight telescopic support and the crane provided by the embodiment of the utility model have the following beneficial effects:

[0018] The counterweight telescopic support of the crane includes a sliding support, a fixed support and an adjusting mechanism. The fixed support is slidably arranged on the sliding support, and one end of the fixed support is formed with a mounting portion adapted to the crane body. The adjusting mechanism includes a first linear driving member and a second linear driving member. The first linear driving member is arranged on the fixed support and is used to drive the sliding support to slide along the length direction of the fixed support. The second linear driving member has two ends respectively connected with the sliding support and the counterweight, and is used to drive the sliding support and the fixed support to slide along the height direction relative to the counterweight, so as to ensure that the safety quality portion can be clamped with the crane body or separated from the crane body, and realize the self-loading and unloading function of the counterweight telescopic support. The counterweight telescopic support in the application is provided with linear driving members capable of moving in different directions. When it is required to mount the counterweight telescopic support on the crane body, the second linear driving member is elongated and exerts a force on the counterweight. Since the counterweight is arranged on the ground, the sliding support and the fixed support can move upward under the action of the reaction force, so as to realize the adjustment in the height direction. At the same time, the first linear driving member is also elongated, so as to drive the sliding support to slide along the length direction of the fixed support, so that the fixed support moves relative to the sliding support, and the adjustment in the horizontal direction is realized, so as to ensure that the mounting portion can be better clamped with the crane body. The counterweight telescopic support of the embodiment has simple structure and can be conveniently loaded and unloaded with the crane, and the mounting of the counterweight telescopic support and the crane body does not need other hoisting equipment.

[0019] Other features and advantages of the present application will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0020] The accompanying drawings are included to provide a further understanding of the present application and constitute a part of the specification, and are used together with the following detailed description to explain the present application, but do not constitute a limitation on the present application. For those skilled in the art, other drawings can be obtained from the structures shown in the drawings without creative labor. In the drawings:

[0021] Figure 1 is a structural schematic view of the counterweight telescopic support according to one perspective of the present application;

[0022] Figure 2 is a structural schematic view of the counterweight telescopic support according to another perspective of the present application;

[0023] Figure 3 is a structural schematic view of the fixed support according to the present application;

[0024] Figure 4 This is a schematic diagram of the sliding bracket from one perspective according to the present invention;

[0025] Figure 5 This is a structural schematic diagram of the sliding bracket according to another perspective of the present invention;

[0026] Figure 6 This is a schematic diagram of the roller frame according to the present invention.

[0027] Explanation of reference numerals in the attached figures

[0028] 1. Sliding bracket 221 Weight reduction hole

[0029] 11. Circumvention groove 222. First top plate.

[0030] 111 First Avoidance Section 223 Second Top Plate

[0031] 112 Second Avoidance Section 224 Base Plate

[0032] 113 First guide plate 225 First mounting plate

[0033] 114 Second guide plate 226 Second mounting plate

[0034] 12 Roller frame 227 Protrusion

[0035] 13 Slide groove 23 Slide rail

[0036] 14 Connecting plate 24 First mounting ear plate

[0037] 15 Mounting slot 25 Connecting rod

[0038] 16. Horizontal section 3. Adjustment mechanism

[0039] 17 Vertical section 31 First linear drive component

[0040] 18 Second mounting ear plate 32 Second linear drive

[0041] 19 Through-hole 4 Limiting plate

[0042] 21. Mounting section 5. Leveling screw

[0043] 22. Support body Detailed Implementation

[0044] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0045] The counterweight telescopic bracket and crane according to the present invention are described below with reference to the accompanying drawings.

[0046] Benru Figure 1 As shown, this embodiment proposes a counterweight telescopic support for a crane. The crane includes a crane body, and the counterweight telescopic support includes a sliding support 1, a fixed support, and an adjustment mechanism 3. The fixed support is slidably mounted on the sliding support 1, and one end of the fixed support has a mounting portion 21 adapted to the crane body. The adjustment mechanism 3 includes a first linear drive member 31 and a second linear drive member 32. The first linear drive member 31 is mounted on the fixed support and is used to drive the sliding support 1 to slide along the length direction of the fixed support. The two ends of the second linear drive member 32 are respectively connected to the sliding support 1 and the counterweight. The second linear drive member 32 is used to drive the sliding support 1 and the fixed support to slide together relative to the counterweight along the height direction, so as to ensure that the counterweight can be engaged with the crane body or separated from the crane body, realizing the self-loading and unloading function of the counterweight telescopic support.

[0047] The counterweight telescopic bracket in this application is equipped with linear drive members capable of moving in different directions. The two ends of the second linear drive member 32 are respectively connected to the sliding bracket 1 and the counterweight. When the counterweight telescopic bracket needs to be installed on the crane body, the second linear drive member 32 extends and applies force to the counterweight. Since the counterweight is set on the ground, the sliding bracket 1 and the fixed bracket can move upwards under the action of the reaction force, achieving height adjustment. Simultaneously, the first linear drive member 31 can be driven to extend as well, thus driving the sliding bracket 1 to slide along the length direction of the fixed bracket, so that the fixed bracket also moves relative to the sliding bracket 1, achieving horizontal adjustment. This ensures that the mounting part 21 can better engage with the crane body. The counterweight telescopic bracket of this embodiment has a simple structure and can be easily installed and removed from the crane without the need for other lifting equipment.

[0048] like Figure 1 , Figure 2 and Figure 6 As shown, in this embodiment, the fixed bracket includes a bracket body 22 and slide rails 23 arranged on both sides of the bracket body 22 along its width direction. Both slide rails 23 extend along the length direction of the bracket body 22. A clearance groove 11 is formed on the sliding bracket 1 to accommodate the slide rails 23, and the slide rails 23 and the groove walls of the clearance grooves 11 are slidably engaged. Further, protrusions 227 are formed on both sides of the bracket body 22 along its width direction. Mounting surfaces for mounting the slide rails 23 are formed on the protrusions 227, and the slide rails 23 are detachably mounted on the protrusions 227. It should be noted that the length direction of the bracket body 22... Figure 1 The front-to-back direction, and the width direction of the support body 22 are... Figure 1 The left and right directions in the middle.

[0049] The support body 22 is also provided with multiple weight-reducing holes 221, which can effectively reduce the overall weight of the support body 22. In addition, the support body 22 of this application has a box structure, which improves the overall structural strength of the counterweight telescopic support and avoids the risk of interference between the counterweight and the crane's upper frame chassis during the crane's rotation operation due to the low structural strength of the counterweight telescopic support.

[0050] Furthermore, such as Figure 3 As shown, the bracket body 22 includes a first top plate 222, a second top plate 223, a bottom plate 224, a plurality of first mounting plates 225 spaced apart in the front-to-back direction, and a plurality of second mounting plates 226 spaced apart in the left-to-right direction. Specifically, there are three first mounting plates 225 and four second mounting plates 226, both of which are mounted on the bottom plate 224. A first top plate 222 is mounted between two second mounting plates 226 located on the left and right sides, and a second top plate 223 is mounted on two second mounting plates 226 located between two first top plates 222. Any two adjacent first mounting plates 225 are connected by a second top plate 223. In this embodiment, weight-reducing holes 221 are provided on the second top plate 223 and the first mounting plate 225 near the safety part. A wiring fixing plate is also mounted on the top of the two second mounting plates 226 located on the left and right sides to facilitate the fixing of the hydraulic wiring on the second linear drive component 32.

[0051] like Figure 4 and Figure 5 As shown, in this embodiment, the side wall of the clearance groove 11 is provided with roller frames 12 extending along the length direction. There are two roller frames 12, both of which are connected to the sliding bracket 1. The bottom end of the roller frame 12 is provided with a sliding groove 13 for accommodating multiple rollers. The extension direction of the sliding groove 13 is consistent with the extension direction of the slide rail 23, and the rollers and the slide rail 23 are slidably engaged. Furthermore, the roller frame 12 is also provided with fixing pins. There are multiple fixing pins, each corresponding to a roller. The fixing pins pass through the roller frame 12 and the rollers sequentially along the width direction of the roller frame 12. The rollers can rotate relative to the fixing pins and slide in cooperation with the slide rail 23. In this embodiment, the rollers can slide back and forth along the slide rail 23 in the front-to-back direction, which can ensure that the fitting gap between the counterweight telescopic bracket and the crane body is controlled within a very small range, resulting in high installation accuracy. Moreover, the rolling friction method causes less wear on the rollers, greatly reducing the downward deflection of the sliding bracket 1. The downward deflection refers to the displacement of the sliding bracket 1 caused by deformation under the pressure of the counterweight.

[0052] like Figure 5 and Figure 6As shown, in this embodiment, the sliding bracket 1 is further provided with a connecting plate 14, and the top of the roller frame 12 is also provided with a mounting groove 15 communicating with the sliding groove 13. The mounting groove 15 communicates with the sliding groove 13 and extends along the width direction of the roller frame 12. One end of the connecting plate 14 is detachably connected to the sliding bracket 1, and the other end is placed in the mounting groove 15 and detachably connected to the roller frame 12, which can ensure that the roller frame 12 and the sliding bracket 1 are stably connected. Furthermore, there are two mounting grooves 15, which are arranged at intervals along the length direction of the roller frame 12. Each mounting groove 15 is provided with a connecting plate 14, which can further ensure that the roller frame 12 can be stably installed on the sliding bracket 1.

[0053] To clearly distinguish the first avoidance part 111 and the second avoidance part 112, such as Figure 5 As shown, the structure of the roller frame 12 on the right side is omitted. In this embodiment, the side wall of the clearance groove 11 includes a first clearance part 111 and a second clearance part 112. The first clearance part 111 is for the roller frame 12 to be placed in, and the second clearance part 112 is for the slide rail 23 to be placed in. The sliding bracket 1 also includes a first guide plate 113 and a second guide plate 114. The first guide plate 113 is arranged at the connection between the first clearance part 111 and the second clearance part 112, and the second guide plate 114 is arranged on the side of the second clearance part 112 away from the roller frame 12. The first guide plate 113 and the second guide plate 114 both extend along the length direction of the bracket body 22, and play the role of guiding and limiting the slide rail 23 to prevent wear caused by interference between the sliding bracket 1 and the fixed bracket during the sliding process of the sliding bracket 1 along the slide rail 23.

[0054] like Figure 5 As shown, in this embodiment, the sliding bracket 1 includes a horizontal portion 16 and vertical portions 17 disposed on both sides of the horizontal portion 16 along its length. The horizontal portion 16 and the vertical portions 17 are integrally connected, and the horizontal portion 16 and the two vertical portions 17 form an open-ended clearance groove 11. Each vertical portion 17 has a through-hole 19 for mounting a second linear drive member 32. The bottom end of the second linear drive member 32 is detachably connected to a counterweight. Similarly, the sliding bracket 1 also has a box structure, which improves the overall structural strength of the counterweight telescopic bracket, enabling the sliding bracket 1 to withstand higher counterweight pressure. In this embodiment, there are two second linear drive members 32, which are spaced apart on the left and right sides of the bracket body 22, ensuring stable movement of the counterweight telescopic bracket along the height direction.

[0055] like Figure 1As shown, in this embodiment, there are two first linear drive members 31, which are spaced apart on the left and right sides of the bracket body 22. The bracket body 22 is also provided with a first mounting ear plate 24. One end of the first linear drive member 31 is hinged to the first mounting ear plate 24, and the other end is connected to the vertical part 17 through a connecting rod 25, which passes through the vertical part 17. The first linear drive member 31 includes a telescopic rod and a cylinder disposed on the telescopic rod. The cylinder is connected to the vertical part 17 through the connecting rod 25, ensuring that when the cylinder slides in the front-back direction, it can drive the sliding bracket 1 to move in the front-back direction as well. The sliding bracket 1 is moved by the two first linear drive members 31, and the connection stability is good.

[0056] like Figure 3 As shown, in this embodiment, the counterweight telescopic bracket also includes a limiting plate 4 installed on the side of the fixed bracket. There are multiple limiting plates 4 located on both sides of the slide rail 23 along its length, which limit the roller frame 12 and prevent the roller frame 12 on the sliding bracket 1 from falling off the fixed bracket in case of an accident, thus affecting the installation effect of the counterweight telescopic bracket and the crane body.

[0057] like Figure 4 As shown, in this embodiment, the counterweight telescopic bracket also includes a leveling screw 5, and the side of the sliding bracket 1 is also provided with a plurality of second mounting ears 18 arranged along the width direction. The second mounting ears 18 are provided with mounting holes for the leveling screw 5 to be inserted. The entire counterweight telescopic bracket can be leveled by adjusting the leveling screw 5, which facilitates the assembly of the counterweight telescopic bracket with the crane body.

[0058] In this embodiment, a crane is also proposed, including the counterweight telescopic support as described above. Since the crane employs all embodiments of the counterweight telescopic support, it also possesses all the beneficial effects brought by the counterweight telescopic support, which will not be elaborated upon here.

[0059] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0060] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0061] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0062] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A counterweight telescopic support of a crane, the crane comprising a crane body, characterized in that, The counterweight telescopic support comprises: a sliding support (1); a fixed support, which is slidably arranged on the sliding support (1), and has an installation portion (21) at one end for adapting to the crane body; an adjusting mechanism (3) comprising a first linear driving member (31) and a second linear driving member (32), the first linear driving member (31) being arranged on the fixed support and used for driving the sliding support (1) to slide along the length direction of the fixed support, and the second linear driving member (32) having two ends connected to the sliding support (1) and the counterweight respectively, and used for driving the sliding support (1) and the fixed support to slide along the height direction relative to the counterweight, so as to connect or separate the installation portion (21) from the crane body.

2. Counterweight telescopic support according to claim 1, characterized in that, The fixed support comprises a support body (22) and slide rails (23) arranged on both sides of the support body (22) along the width direction, the slide rails (23) extending along the length direction of the support body (22), and the sliding support (1) is formed with an avoiding slot (11) for accommodating the slide rails (23), and the slide rails (23) and the slot wall of the avoiding slot (11) are in sliding fit.

3. Counterweight telescopic support according to claim 2, characterized in that, The avoiding slot (11) is provided with a roller frame (12) extending along the length direction on the side wall, the bottom end of the roller frame (12) is provided with a sliding groove (13) for accommodating a plurality of rollers, the extending direction of the sliding groove (13) is consistent with the extending direction of the slide rails (23), and the rollers and the slide rails (23) are in sliding fit.

4. The counterweight telescoping support of claim 3, wherein, The sliding support (1) is further provided with a connecting plate (14), the top end of the roller frame (12) is further provided with an installation slot (15) in communication with the sliding groove (13), one end of the connecting plate (14) is detachably connected with the sliding support (1), and the other end is arranged in the installation slot (15) and detachably connected with the roller frame (12).

5. The counterweight telescoping support of claim 4, wherein, The side wall of the avoiding slot (11) comprises a first avoiding portion (111) and a second avoiding portion (112), the first avoiding portion (111) is arranged for the roller frame (12), and the second avoiding portion (112) is arranged for the slide rails (23), the sliding support (1) further comprises a first guide plate (113) and a second guide plate (114), the first guide plate (113) is arranged at the connection between the first avoiding portion (111) and the second avoiding portion (112), the second guide plate (114) is arranged on the side of the second avoiding portion (112) away from the roller frame (12), and the first guide plate (113) and the second guide plate (114) both extend along the length direction of the support body (22).

6. The counterweight telescoping support of claim 2, wherein, The sliding support (1) comprises a horizontal portion (16) and vertical portions (17) arranged on both sides of the horizontal portion (16) along the length direction, the horizontal portion (16) and the two vertical portions (17) enclose the avoiding slot (11) which is open upward, and the vertical portions (17) are provided with through holes (19) for mounting the second linear driving member (32).

7. The counterweight telescoping support of claim 6, wherein, The first mounting lug plate (24) is arranged on the support body (22), one end of the first linear driving member (31) is hinged to the first mounting lug plate (24), and the other end is connected to the vertical part (17) through a connecting rod (25).

8. The counterweight telescoping support of claim 5, wherein, The counterweight telescopic support further comprises a limiting plate (4) mounted on the side of the fixed support, the number of the limiting plate (4) is multiple and located on both sides of the length direction of the slide rail (23).

9. Counterweight telescopic support according to any one of claims 1 to 7, characterized in that, The counterweight telescopic support further comprises a leveling screw (5), the side of the sliding support (1) is further provided with a plurality of second mounting lug plates (18) arranged along the width direction, and the second mounting lug plate (18) is provided with a mounting hole for inserting the leveling screw (5).

10. A crane, characterized in that The counterweight telescopic support according to any one of claims 1-9.

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