Crawler frame and crawler crane

Abstract

The utility model relates to the technical field of engineering machinery, and discloses a crawler frame and a crawler crane. The track frame comprises a track frame bottom plate; the plurality of thrust wheels are fixedly mounted on the track frame bottom plate through thrust wheel mounting blocks at the two ends; and the reinforced support assembly is tightly attached to the outer side of the thrust wheel mounting block and is fixed on the track frame bottom plate. The crawler crane comprises the crawler frame, and when the thrust wheel mounting block bears the shear stress, the reinforced support assembly tightly attached to the outer side of the thrust wheel mounting block can provide support force opposite to the shear stress for the thrust wheel mounting block so as to reduce the influence of the shear stress on the thrust wheel mounting block. According to the crawler frame and the crawler crane, the side load resistance of the thrust wheels of the crawler frame and the reliability of the crawler frame can be improved. Due to the lateral load resistance of the thrust wheels of the crawler frame and the reliability of the crawler frame, the reliability of the crawler crane under long-time operation in a complex environment can be improved.

Description

Technical Field

[0001] The present application belongs to the technical field of engineering machinery, and specifically, relates to a crawler frame and a crawler crane. Background Art

[0002] Crawler cranes are widely used in various construction projects such as petrochemical, nuclear power, wind power, and subways because of their advantages such as small ground pressure, small turning radius, strong climbing ability, strong lifting capacity, no need for outriggers, and good operating stability. When a crawler vehicle makes a turn, the torque on the track roller is much greater than the theoretical calculated value because the actual site environment is usually worse than the ideal state. It is not enough to rely solely on the friction force generated by the pre-tightening force of the track roller mounting bolts to resist the torque generated by the turning action, resulting in an increased risk of bolt breakage and track roller failure. Summary of the invention

[0003] The purpose of the present application is to provide a crawler frame and a crawler crane to enhance the anti-side load capability of the track rollers of the crawler frame and the reliability of the crawler frame.

[0004] In order to achieve the above-mentioned purpose, the present application provides a crawler frame on one hand, and the crawler frame comprises:

[0005] Track frame bottom plate;

[0006] Multiple supporting rollers, which are fixedly mounted on the bottom plate of the crawler frame through supporting roller mounting blocks at both ends;

[0007] The reinforced support assembly is arranged closely on the outer side of the track wheel mounting block and fixed on the bottom plate of the crawler frame.

[0008] In some embodiments, the reinforcement support assembly includes:

[0009] The positioning blocks are arranged in parallel and at intervals on the outer sides of the track wheel mounting blocks, and the positioning blocks are welded and fixed to the bottom plate of the crawler frame;

[0010] The adjusting block is inserted into the gap between the positioning block and the track wheel mounting block.

[0011] In some embodiments, the reinforcement support assembly includes:

[0012] The limiting base plate is detachably mounted on the positioning block and the adjusting block and is used for limiting the adjusting block.

[0013] In some embodiments, a vertically penetrating concave limiting groove is provided on the limiting bottom plate, and a convex limiting portion protruding upward is provided on the top edge of the adjustment block, and the convex limiting portion is inserted into the concave limiting groove.

[0014] In some embodiments, the limiting bottom plate is fastened to the top end surface of the positioning block by a plurality of limiting fasteners.

[0015] In some embodiments, a limiting bottom plate for limiting the position of the adjusting block is integrally extended from the top of the adjusting block.

[0016] In some embodiments, the adjustment block is a flat plate or a wedge-shaped block.

[0017] In some embodiments, the roller mounting block is fastened to the track frame bottom plate by a plurality of mounting fasteners.

[0018] In some embodiments, the reinforced support assembly is at least provided at both ends of the first supporting roller at the front end of the track frame bottom plate and at both ends of the first supporting roller at the rear end of the track frame bottom plate.

[0019] On the other hand, the present application protects a crawler crane, which includes the above-mentioned crawler frame.

[0020] In the technical solution of the present application, the reinforced support assembly is arranged closely to the outer side of the roller mounting block and is fixed to the bottom plate of the track frame. The reinforced support assembly can provide support force for the roller mounting block. In actual working conditions, when the body of the track frame performs a turning action, the lateral load between the rollers and the tracks is difficult to predict. Therefore, the roller mounting block fixedly installed on the bottom plate of the track frame may need to bear extremely large shear stress, causing the roller mounting block to fail. The reinforced support assembly of the present application can abut against the outer side of the roller mounting block and provide a support force opposite to the shear stress to reduce the destructive effect of the shear stress on the roller mounting block, thereby improving the side load resistance of the rollers of the track frame and the reliability of the track frame.

[0021] Other features and advantages of the embodiments of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are used to provide a further understanding of the embodiments of the present application and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the embodiments of the present application, but do not constitute a limitation on the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without creative work. In the drawings:

[0023] Figure 1 It is a structural schematic diagram of a crawler frame according to a specific embodiment of the present application;

[0024] Figure 2 for Figure 1 A local enlarged view of point A in FIG.

[0025] Figure 3 for Figure 2 A schematic diagram of the structure of the reinforced support assembly;

[0026] Figure 4 for Figure 3 Bottom view of the reinforced support assembly in FIG.

[0027] Figure 5 for Figure 1 Side view of the track frame in.

[0028] Description of Reference Numerals

[0029] 100 rollers 311 limit bottom plate

[0030] 110 Track wheel mounting block 311a Concave limiting groove

[0031] 210 Track frame bottom plate 313 Limit fastener

[0032] 300 Strengthening support assembly 320 Adjustment block

[0033] 310 positioning block 321 raised limiting part DETAILED DESCRIPTION

[0034] The specific implementation of the present application is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present application, and is not used to limit the present application.

[0035] The crawler frame and crawler crane according to the present application will be described below with reference to the accompanying drawings.

[0036] It should be noted that, in the present application, unless otherwise stated, “upper, lower, front, rear, inner, outer” generally refers to the directions shown in the accompanying drawings. When there is no reference to the accompanying drawings, “inner” and “outer” refer to the lateral inner and outer directions based on the axis of the crawler frame bottom plate 210.

[0037] The present application discloses a novel crawler frame, such as Figure 1 and Figure 2 and Figure 4 As shown, a crawler frame in a specific embodiment includes:

[0038] Track frame bottom plate 210;

[0039] A plurality of rollers 100, the rollers 100 are fixedly mounted on the track frame bottom plate 210 through roller mounting blocks 110 at both ends;

[0040] The reinforced support assembly 300 is arranged closely to the outer side of the supporting wheel mounting block 110 and fixed to the crawler frame bottom plate 210 .

[0041] In actual working conditions (such as complex environments such as muddy gravel roads), when the body of the crawler frame is turning, due to the influence of the external environment, the lateral load between the supporting roller 100 and the crawler track is difficult to predict. Therefore, the supporting roller mounting block 110 fixedly mounted on the crawler frame bottom plate 210 may need to withstand shear stress far exceeding the design strength, causing the supporting roller mounting block 110 to fail. Figure 2 or Figure 4 When the roller mounting block 110 is subjected to the shear stress, the reinforcing support assembly 300 tightly arranged on the outer side of the roller mounting block 110 can provide the roller mounting block 110 with a supporting force opposite to the shear stress, so as to reduce the influence of the shear stress on the roller mounting block 110. Compared with the design method in the prior art that only relies on the mounting bolts of the roller mounting block 110 to resist the shear stress, the present application greatly improves the side load resistance of the roller 100 of the track frame and the reliability of the track frame.

[0042] The connection between the reinforced support assembly 300 and the crawler frame bottom plate 210 may be a detachable connection or an integral arrangement.

[0043] On the basis of greatly reducing the influence of the shear stress on the track wheel mounting block 110, in this embodiment, as Figure 2 , Figure 3 As shown, the reinforcement support assembly 300 includes:

[0044] The positioning block 310 is arranged parallel and spaced outside the supporting wheel mounting block 110, and the positioning block 310 is welded and fixed to the crawler frame bottom plate 210;

[0045] The adjusting block 320 is inserted into the gap between the positioning block 310 and the track wheel mounting block 110 .

[0046] Specifically, see Figure 3 The positioning block 310 can provide support force to the outer side of the supporting roller mounting block 110 through the adjustment block 320 inserted in the gap between the positioning block 310 and the supporting roller mounting block 110. In this way, the positioning block 310 can support the supporting roller mounting blocks 110 of different sizes through the replaceable adjustment block 320, and the pre-tightening support effect of the positioning block 310 on the supporting roller mounting block 110 can be adjusted by replacing the adjustment blocks 320 of different sizes.

[0047] In this embodiment, the reinforcement support assembly 300 further includes:

[0048] The limiting bottom plate 311 is detachably mounted on the positioning block 310 and the adjusting block 320 and is used to limit the adjusting block 320 .

[0049] Specifically, such a configuration is conducive to further fixing the adjustment block 320 inserted in the gap between the positioning block 310 and the roller mounting block 110. When the adjustment block 320 provides a supporting force to the outer side of the roller mounting block 110, the adjustment block 320 is clamped between the positioning block 310 and the roller mounting block 110. When there is no clamping force between the roller mounting block 110 and the roller mounting block 110, the adjustment block 320 may be separated from the gap between the positioning block 310 and the roller mounting block 110 due to factors such as vibration of the track frame. Therefore, the introduction of the limiting bottom plate 311 can limit the limiting bottom plate 311 in the gap between the positioning block 310 and the roller mounting block 110. In addition, the detachable configuration of the limiting bottom plate 311 is also conducive to the replacement of the adjustment block 320.

[0050] Of course, the limiting bottom plate 311 is not limited to the above-mentioned detachable arrangement on the positioning block 310 , and the limiting bottom plate 311 and the adjustment block 320 may be integrally arranged, or the limiting bottom plate 311 for limiting the adjustment block 320 may be integrally extended from the top of the positioning block 310 .

[0051] There are many ways for the limiting bottom plate 311 to limit the adjusting block 320. Preferably, in this embodiment, Figure 2 and Figure 3 As shown, a vertically penetrating concave limiting groove 311 a is provided on the limiting bottom plate 311 , and a convex limiting portion 321 protruding upward is provided on the top edge of the adjustment block 320 , and the convex limiting portion 321 is inserted into the concave limiting groove 311 a .

[0052] See also Figure 3 The cooperation between the raised limiting portion 321 and the concave limiting groove 311a can realize the limiting of the adjustment block 320 relative to the limiting bottom plate 311. In this way, the limiting bottom plate 311 has a simple structure, is easy to process and install, and has a good limiting effect.

[0053] Of course, the concave limiting groove 311a can also be set in a non-vertical through-going manner. In addition, the limiting method of the adjustment block 320 relative to the limiting bottom plate 311 is not limited to the mutual cooperation between the above-mentioned raised limiting portion 321 and the concave limiting groove 311a. Those skilled in the art can understand that the limiting method of the adjustment block 320 relative to the limiting bottom plate 311 can also include: the top edge of the adjustment block 320 is provided with a recessed portion, and the limiting bottom plate 311 is formed with a protrusion extending inwardly for cooperating with the recessed portion to limit the adjustment block 320, and other methods.

[0054] In this embodiment, if Figure 3 As shown, the limiting bottom plate 311 is fastened and installed on the top surface of the positioning block 310 through a plurality of limiting fasteners 313 .

[0055] Specifically, see Figure 3The limiting bottom plate 311 includes limiting fastener mounting holes arranged at the front and rear ends of the limiting bottom plate 311, the positioning block 310 includes threaded holes arranged in alignment with the limiting fastener mounting holes, and the limiting fastener 313 is a bolt; the limiting fastener 313 passes through the limiting fastener mounting holes and the threaded holes. Such a configuration can facilitate the rapid disassembly and assembly of the limiting bottom plate 311.

[0056] Of course, the connection between the limiting fastener 313 and the limiting base plate 311 is not limited to the through connection shown in the figure, but can also be other relationships such as an integral setting. The limiting fastener 313 is not limited to the above-mentioned bolts, but can also be a pin shaft, etc.

[0057] In some embodiments, a limiting bottom plate 311 for limiting the position of the adjusting block 320 is integrally extended from the top of the adjusting block 320 .

[0058] Specifically, with such arrangement, the overall structure is simple and easy to install and disassemble.

[0059] In this embodiment, the adjustment block 320 is a flat plate.

[0060] Specifically, see Figure 3 and Figure 4 The adjustment block 320 is a flat plate. With this arrangement, the overall structure is simple and the adjustment block 320 is easy to process.

[0061] Of course, the adjustment block 320 may also be a wedge-shaped block that is gradually reduced in diameter along the insertion direction. Those skilled in the art will appreciate that by adjusting the insertion method of the wedge-shaped block, the contact force between the adjustment block 320 and the positioning block 310 can be adjusted, and thus the magnitude of the supporting force provided by the adjustment block 320 to the outer side of the supporting wheel mounting block 110 can be adjusted. Such an arrangement is simple in structure and highly practical.

[0062] In this embodiment, if Figures 2 to 4 As shown, the roller mounting block 110 is fastened to the crawler frame bottom plate 210 by a plurality of mounting fasteners.

[0063] Specifically, see Figure 3 Such a configuration is conducive to the disassembly, assembly and replacement of the supporting wheel mounting block 110 and has a simple structure, is easy to process and has good versatility.

[0064] In this embodiment, if Figure 5 As shown, the reinforced support assembly 300 is at least disposed at both ends of the first supporting roller at the front end of the track frame bottom plate 210 and at both ends of the first supporting roller at the rear end of the track frame bottom plate 210 .

[0065] When the vehicle body is turning in the forward process, the supporting roller 100 arranged at the front end of the track frame is subjected to the greatest force. Therefore, the reinforced support assembly 300 should be arranged at both ends of the first supporting roller at the front end of the track frame bottom plate 210. Similarly, when the vehicle body is reversing, the reinforced support assembly 300 should be arranged at both ends of the first supporting roller at the rear end of the track frame bottom plate 210. Those skilled in the art can understand that the arrangement of the reinforced support assembly 300 at both ends of the other supporting rollers 100 is also beneficial to the anti-side load capability of the supporting roller 100 of the track frame and the reliability of the track frame.

[0066] The present application discloses a novel crawler crane. The crawler crane in a specific implementation manner includes the above-mentioned crawler frame.

[0067] Since the shear stress of the track roller mounting block 110 is improved, the side load resistance of the track roller 100 and the reliability of the track frame can be improved, thereby improving the reliability of the crawler crane of the present application in complex environments and long-term operations.

[0068] In the description of the present application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present application, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0069] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0070] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

Claims

1. A crawler frame, characterized in that: The crawler frame comprises: Track frame bottom plate (210); A plurality of rollers (100), wherein the rollers (100) are fixedly mounted on the crawler frame bottom plate (210) via roller mounting blocks (110) at both ends; The reinforced support assembly (300) is arranged closely to the outer side of the supporting wheel mounting block (110) and is fixed to the crawler frame bottom plate (210).

2. The crawler frame according to claim 1, characterized in that: The reinforcement support assembly (300) comprises: A positioning block (310) is arranged in parallel and at intervals on the outer side of the supporting wheel mounting block (110), and the positioning block (310) is welded and fixed to the crawler frame bottom plate (210); The adjustment block (320) is inserted into the gap between the positioning block (310) and the track wheel mounting block (110).

3. The crawler frame according to claim 2, characterized in that: The reinforcement support assembly (300) comprises: The limiting bottom plate (311) is detachably mounted on the positioning block (310) and the adjusting block (320) and is used to limit the position of the adjusting block (320).

4. The crawler frame according to claim 3, characterized in that: The limiting bottom plate (311) is provided with a vertically penetrating concave limiting groove (311a), and the top edge of the adjustment block (320) is provided with a convex limiting portion (321) protruding upward, and the convex limiting portion (321) is inserted into the concave limiting groove (311a).

5. The crawler frame according to claim 3, characterized in that: The limiting bottom plate (311) is fixedly mounted on the top end surface of the positioning block (310) via a plurality of limiting fasteners (313).

6. The crawler frame according to claim 3, characterized in that: A limiting bottom plate (311) for limiting the position of the adjusting block (320) extends integrally from the top end of the adjusting block (320).

7. The crawler frame according to claim 2, characterized in that: The adjustment block (320) is a flat plate or a wedge-shaped block.

8. The crawler frame according to claim 1, characterized in that: The supporting wheel mounting block (110) is fastened and mounted on the crawler frame bottom plate (210) by means of a plurality of mounting fasteners.

9. The crawler frame according to any one of claims 1 to 8, characterized in that: The reinforced support assembly (300) is at least arranged at both ends of the first supporting roller (100) at the front end of the track frame bottom plate (210) and at both ends of the first supporting roller (100) at the rear end of the track frame bottom plate (210).

10. A crawler crane, characterized in that: The crawler crane comprises a crawler frame according to any one of claims 1 to 9.

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