Suspension arm supporting device and automobile crane

Abstract

The utility model discloses a lazy arm support device and autocrane, lazy arm support device includes lazy arm support, mount subassembly and pin roll subassembly, lazy arm support upper end is used for supporting lazy arm body, lazy arm support lower end is equipped with first stand bar and second stand bar at interval along the width direction of chassis, the first supporting leg and the second supporting leg are provided with first pin mounting hole channels which are arranged in a through mode, the mounting base assembly can be arranged on the chassis and provided with second pin mounting hole channels, and the pin shaft assembly detachably penetrates through the first pin mounting hole channels and the second pin mounting hole channels so that the suspension arm support can be switched between an overturning lodging state and a vertical supporting state. In the overturning and lodging state, objects can be stored on the suspension arm support, and the automobile crane can conveniently carry related tools to conduct transition operation in a construction area.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of automobile crane, concretely relates to a kind of boom support device and automobile crane. BACKGROUND

[0002] During the process of no-load high-speed running of automobile crane, due to the influence of ground conditions, it will cause the impact of boom, and it is easy to hit the cab, engine cover or other mechanisms, so a boom support is needed at the lower part of the boom to provide support and protection.In the prior art, the boom support is fixed on the automobile chassis by bolt connection, which cannot be stored, resulting in the boom support always occupying the chassis space, which is not convenient for storing objects on the chassis. SUMMARY

[0003] In view of the above defects or deficiencies, the utility model provides a kind of boom support device and automobile crane, to solve the technical problem that the existing boom support cannot be stored and occupies the chassis space.

[0004] To achieve the above purpose, the utility model provides a kind of boom support device, wherein the boom support device includes a boom support, a mounting seat assembly and a pin shaft assembly; the upper end of the boom support is used to support the boom body, the lower end of the boom support is spaced apart in the width direction of the chassis, and the first foot and the second foot are provided with first pin mounting hole channels; the mounting seat assembly can be provided on the chassis and is provided with second pin mounting hole channels; the pin shaft assembly is detachably arranged in the first pin mounting hole channel and the second pin mounting hole channel, so that the boom support can be switched between the inverted state and the vertical support state.

[0005] In the utility model embodiment, the number of first pin mounting hole channels is at least two, and at least two first pin mounting hole channels are sequentially and spaced apart in the length direction of the chassis, the number of second pin mounting hole channels is consistent with the number of first pin mounting hole channels, and is respectively connected in series by pin shaft assembly one by one.

[0006] In the utility model embodiment, the first pin mounting hole channel includes a first pin hole provided on the first foot, and a second pin hole provided on the second foot, the mounting seat assembly includes two mounting seats, the two mounting seats are respectively provided on the left and right sides of the chassis and are provided with second pin mounting hole channels, the first foot and the second foot are respectively and one by one provided with two mounting seats, and are arranged in the corresponding pin hole and second pin mounting hole channel by pin shaft assembly.

[0007] In the embodiment of the utility model, the mounting seat includes two mounting lugs arranged in relative spacing, the gap between the two mounting lugs can accommodate the corresponding supporting leg, and a limiting column is arranged on the mounting lug at the outer side, the end of the limiting column away from the mounting seat assembly is provided with a detachable limiting piece, the pin shaft assembly includes a first pin shaft and a lug, the first pin shaft can be arranged in the first pin mounting hole and the second pin mounting hole, the lug is sleeved on the first pin shaft, and a limiting hole for the limiting column to pass through is further formed in the lug.

[0008] In the embodiment of the utility model, the mounting seat further includes a limiting bottom plate, the limiting bottom plate is connected to the bottom disc, and one side of the limiting bottom plate facing the boom support is provided with a limiting surface, and the limiting surface is used for abutting against the first supporting leg or the second supporting leg when the boom support is in the overturning and lodging state.

[0009] In the embodiment of the utility model, the mounting seat assembly is provided with a limiting column on the opposite sides along the width direction of the bottom disc, the end of the limiting column away from the mounting seat assembly is provided with a detachable limiting piece, the pin shaft assembly includes a first pin shaft and a lug, the first pin shaft can be arranged in the first pin mounting hole and the second pin mounting hole, the lug is sleeved on the first pin shaft, and a limiting hole for the limiting column to pass through is further formed in the lug.

[0010] In the embodiment of the utility model, the upper end of the boom support forms a supporting space between the first supporting leg and the second supporting leg, and the two side walls of the supporting space are provided with a buffer assembly supporting the boom body.

[0011] In the embodiment of the utility model, the buffer assembly includes a shear-resistant seat and a buffer block, the shear-resistant seat is arranged at the upper end of the corresponding supporting leg, and a shear-resistant part is arranged on the side of the shear-resistant seat away from the supporting leg, the buffer block is connected to the shear-resistant seat through a fastener, and the lower end surface of the buffer block abuts against the shear-resistant part.

[0012] In the embodiment of the utility model, the boom support is a spliced and welded piece, and includes a first face spliced plate, a second face spliced plate, an inner side spliced plate and an outer side spliced plate, the first face spliced plate and the second face spliced plate are arranged in spacing, the inner side spliced plate connects the inner edges of the first face spliced plate and the second face spliced plate, the outer side spliced plate connects the outer edges of the first face spliced plate and the second face spliced plate, and the inner side spliced plate and the outer side spliced plate at the supporting leg form the first pin mounting hole.

[0013] In the embodiment of the utility model, the first face spliced plate and the second face spliced plate each include a first plate body and a second plate body, the first plate body and the second plate body are arranged in the width direction of the bottom disc and are spliced, and the spliced surfaces of the first plate body and the second plate body are centrally and obliquely arranged.

[0014] In order to achieve the above-mentioned target, the utility model also provides an automobile crane, wherein the automobile crane includes the boom support device in the above-mentioned embodiment.

[0015] By the technical scheme, the hoist arm supporting device and the automobile crane have the following beneficial effects:

[0016] When the hoist arm supporting device is used, the hoist arm supporting device comprises the hoist arm support, the mounting seat assembly and the pin shaft assembly, the mounting seat assembly is arranged on the chassis and is provided with the second pin hole, the lower end of the hoist arm support is provided with the first supporting leg and the second supporting leg in the width direction of the chassis, the first supporting leg and the second supporting leg are arranged on the two sides of the mounting seat assembly respectively, the first pin hole is arranged on the first supporting leg and the second supporting leg, the first pin hole and the second pin hole are arranged laterally, the hoist arm support can be turned around the mounting seat assembly, the hoist arm support can be switched between the vertical supporting state and the turned state by mounting or dismounting the pin shaft assembly, in the vertical supporting state, the hoist arm support can be used for supporting the hoist arm body and preventing the hoist arm body from impacting the vehicle body, in the turned state, the hoist arm support can be placed on the chassis, and the hoist arm support can be used for storing objects, so that the automobile crane can carry the related tools and perform the transfer operation in the construction area.

[0017] Other features and advantages of the present application will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0018] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, and are used to explain the present application together with the following specific embodiments, but do not constitute a limitation on the present application. In the drawings:

[0019] Figure 1 is a schematic view of the hoist arm support according to an embodiment of the present application;

[0020] Figure 2 is a front view of the hoist arm support according to an embodiment of the present application;

[0021] Figure 3 is a side view of the hoist arm support according to an embodiment of the present application;

[0022] Figure 4 is a schematic view of the first pin shaft according to an embodiment of the present application;

[0023] Figure 5 is a schematic view of the second pin shaft according to an embodiment of the present application;

[0024] Figure 6 is a schematic view of the chassis according to an embodiment of the present application;

[0025] Figure 7 is Figure 6 a local enlarged view of A in FIG.

[0026] Reference Signs List

[0027] 1 boom support 11 first leg

[0028] 12 second leg 13 first pin mounting hole

[0029] 14 support space 15 buffer assembly

[0030] 151 shear prevention seat 152 buffer block

[0031] 153 shear prevention part 16 first surface panel

[0032] 161 first plate body 162 second plate body

[0033] 163 splicing surface 164 reinforcing ring

[0034] 17 inner side panel 18 outer side panel

[0035] 2 mounting seat assembly 21 second pin mounting hole

[0036] 22 mounting seat 221 limiting bottom plate

[0037] 222 mounting ear plate 23 limiting column

[0038] 3 pin shaft assembly 31 first pin shaft

[0039] 32 ear plate 321 limiting hole

[0040] 33 second pin shaft 4 chassis DETAILED DESCRIPTION

[0041] The specific embodiments described hereinbelow with reference to the accompanying drawings are intended to be illustrative only and the present utility model is not limited to the embodiments described herein. It will be apparent to those skilled in the art that various modifications and changes can be made thereto without departing from the scope of the present utility model.

[0042] The boom support device of the present utility model is described below with reference to the accompanying drawings.

[0043] As shown in Figures 1 to 7 The boom support device comprises:

[0044] a boom support 1, the upper end of the boom support 1 is used for supporting a boom body, the lower end of the boom support 1 is provided with a first leg 11 and a second leg 12 which are spaced apart along the width direction of a chassis 4, and the first leg 11 and the second leg 12 are provided with a first pin mounting hole 13 which is symmetrically arranged;

[0045] The mounting seat assembly 2 can be arranged on the chassis 4 and is provided with the second pin mounting channel 21.

[0046] The pin shaft assembly 3 is detachably arranged in the first pin mounting channel 13 and the second pin mounting channel 21, so that the boom support 1 can be switched between the overturning and flat lying state and the vertical supporting state.

[0047] When the boom support device is used, the boom support 1, the mounting seat assembly 2 and the pin shaft assembly 3 are included, the mounting seat assembly 2 is arranged on the chassis 4 and is provided with the second pin mounting channel 21, the lower end of the boom support 1 is provided with the first supporting leg 11 and the second supporting leg 12 in the width direction of the chassis 4, the first supporting leg 11 and the second supporting leg 12 are arranged on the two sides of the mounting seat assembly 2 respectively, the first pin mounting channel 13 is arranged on the first supporting leg 11 and the second supporting leg 12, the first pin mounting channel 13 and the second pin mounting channel 21 are arranged laterally, so that the boom support 1 can be overturned around the mounting seat assembly 2, and the pin shaft assembly 3 is arranged or detached, so that the boom support 1 can be switched between the vertical supporting state and the overturning and flat lying state, in the vertical supporting state, the boom support 1 can be used to support the boom body and prevent the boom body from impacting the vehicle body, in the overturning and flat lying state, the boom support 1 can be placed on the chassis 4, and objects can be stored on the boom support 1, so that the automobile crane can carry related tools and perform transfer operation in a construction area.

[0048] In the embodiment of the utility model, the number of the first pin mounting channel 13 is at least two, and the at least two first pin mounting channels 13 are sequentially and spacedly arranged in the length direction of the chassis 4, the number of the second pin mounting channel 21 is consistent with the number of the first pin mounting channel 13, and the second pin mounting channel 21 is connected in series with the first pin mounting channel 13 through the pin shaft assembly 3 one by one. When only one pin shaft assembly 3 is reserved, the boom support 1 can be freely overturned, and when two or more pin shaft assemblies 3 are arranged, the boom support 1 can be kept in the vertical supporting state.

[0049] As Figure 6As shown, in the embodiment of the present invention, the first pinning channel 13 includes a first pin hole defined in the first leg 11 and a second pin hole defined in the second leg 12. The mounting assembly 2 includes two mounting blocks 22, one on each side of the chassis 4 and each having a second pinning channel 21. The first leg 11 and the second leg 12 are respectively provided with a one-to-one correspondence with the two mounting blocks 22 and are both passed through the corresponding pin holes and second pinning channels 21 by the pin assembly 3. The mounting blocks 22 are arranged on the sides of the chassis 4, eliminating the space above the chassis 4. The space saved can be used to install other devices or store tools and other items, thereby improving the utilization of the chassis 4 space. Of course, if the chassis 4 is wider or the boom body is heavier, three or more mounting blocks 22 can also be provided. Correspondingly, the number of legs should be greater than the number of mounting blocks 22, thereby forming multiple support points on the lower side of the boom support 1 to prevent deformation of the boom support 1.

[0050] like Figure 7 As shown, in an embodiment of the present invention, the mounting seat 22 includes two mounting ear plates 222 arranged relatively at an interval, and the gap between the two mounting ear plates can be used to accommodate the corresponding support legs, and a limiting column 23 is provided on the outer mounting ear plate, and a detachable limiting member is provided at one end of the limiting column 23 away from the mounting seat assembly 2. The pin shaft assembly 3 includes a first pin shaft 31 and an ear plate 32. The first pin shaft 31 can be inserted into the first pin mounting channel 13 and the second pin mounting channel 21. The ear plate 32 is sleeved on the first pin shaft 31, and a limiting hole 321 is also provided on the ear plate 32 for the limiting column 23 to pass through.

[0051] like Figure 7 As shown, in the embodiment of the present invention, the mounting base 22 further includes a limiting base plate 221, which is connected to the chassis 4, and the side of the limiting base plate 221 facing the boom support 1 is provided as a limiting surface, which is used to abut against the first support leg 11 or the second support leg 12 when the boom support 1 is in the flipped and inverted state. The limiting base plate 221 can abut against the support legs, thereby causing the boom support 1 to fall to a horizontal state, making it easier to place objects on the boom support 1. Specifically, the portion of the support legs that is used to abut against the limiting base plate 221 is provided with a raised portion, thereby raising the horizontal height of the front end of the boom support 1 in the inverted state, thereby achieving avoidance of the devices or components on the front side of the chassis 4.

[0052] like Figure 4 and Figure 7As shown, in an embodiment of the present utility model, the mounting seat assembly 2 is provided with limiting columns 23 on opposite sides along the width direction of the chassis 4, and a detachable limiting part is provided at one end of the limiting column 23 away from the mounting seat assembly 2. The pin shaft assembly 3 includes a first pin shaft 31 and an ear plate 32. The first pin shaft 31 can be inserted into the first pin mounting channel 13 and the second pin mounting channel 21. The ear plate 32 is sleeved on the first pin shaft 31, and a limiting hole 321 is also provided on the ear plate 32 for the limiting column 23 to pass through.

[0053] When the boom bracket 1 is in the vertical support state, the first pin 31 is inserted into the first pin-mounting channel 13 and the second pin-mounting channel 21, the limiting column 23 limits the hole 321, and the ear plate 32 is interposed between the limiting member and the mounting seat assembly 2, thereby limiting the first pin 31 in the width direction of the chassis 4 to prevent the first pin 31 from moving left and right. When disassembling, the limiting member can be removed from the outside of the mounting seat assembly 2. It is understandable that to prevent the pin from moving axially, the conventional practice is to provide limiting members (such as bolts, spring pins, etc.) at both ends of the pin. When disassembling or installing the pin, the operator must extend his arm into the inside of the mounting seat assembly 2 to complete the removal or installation of the limiting member. Since the boom bracket 1 is located between the headstock and the turntable, the space is small, which is not convenient for the operator to perform disassembly and installation operations. However, by providing the ear plate 32 and the limiting column 23, the operator only needs to operate from the outside of the mounting seat assembly 2, making disassembly and installation of the first pin 31 more convenient and efficient.

[0054] Specifically, the first pin 31 and the lug 32 are connected by welding, a through hole is formed around the retaining post 23, and the retaining member is configured as a spring pin that can be inserted into the through hole. Of course, the present invention is not limited to this, and the first pin 31 and the lug 32 can also be connected by threads, and the retaining member can also be configured as a nut, with external threads machined on the retaining post 23.

[0055] Further, see Figure 4 The first pin shaft 31 is also formed with a handle portion, which extends from the main body of the first pin shaft 31 away from the mounting seat assembly 2 and passes through the ear plate 32. When removing the first pin shaft 31, the operator can hold the handle portion to conveniently pull the first pin shaft 31 out of the first pin mounting channel 13 and the second pin mounting channel 21.

[0056] like Figure 3 and Figure 5 As shown, in the embodiment of the present utility model, the number of the first pin-mounting channels 13 is two, and the pin shaft assembly 3 also includes a second pin shaft 33. The first pin shaft 31 is arranged in the first pin-mounting channel 13 near the front end of the chassis 4 and serves as a rotating shaft for the boom bracket 1 to flip. The second pin shaft 33 serves as a fixed shaft and is used to be arranged in another first pin-mounting channel 13 when the boom bracket 1 is in a vertical support state.

[0057] As Figure 1 and Figure 2 shown, in the embodiment of the utility model, the upper end of the boom support 1 forms a support space 14 between the first leg 11 and the second leg 12, and the support space 14 is provided with a buffer assembly 15 for supporting the boom body on the two oppositely arranged side walls. The support space 14 is used to avoid the lower side of the boom body, so that the two buffer assemblies 15 are laterally abutted with the boom body, and play a role of horizontally limiting the boom body; the buffer assembly 15 has a certain elasticity, which can avoid rigid impact with the boom body, thereby protecting the boom body.

[0058] As Figure 2 shown, in the embodiment of the utility model, the buffer assembly 15 includes a shear-proof seat 151 and a buffer block 152, the shear-proof seat 151 is arranged at the upper end of the corresponding leg, and the side of the shear-proof seat 151 away from the leg is provided with a shear-proof part 153, the buffer block 152 is connected with the shear-proof seat 151 through a fastener, and the lower end surface of the buffer block 152 is abutted on the shear-proof part 153. The buffer block 152 is connected with the shear-proof seat 151 through a fastener, as shown in Figure 2 , the buffer block 152 is arranged obliquely, when the boom body is placed on the buffer block 152, there is a downward pressure on the buffer block 152, the pressure is transmitted to the fastener and generates a shear force along the radial direction of the fastener, and the utility model is provided with the shear-proof part 153 to stop the buffer block 152 in the direction of the shear force, thereby sharing part of the shear force, so as to play a role of protecting the fastener. Specifically, a threaded hole is formed in the shear-proof seat 151, and the fastener is a bolt; or the fastener can also be a buckle.

[0059] As Figure 2 shown, in the embodiment of the utility model, the boom support 1 is a plate-welded piece, and includes a first face plate 16, a second face plate, an inner side plate 17 and an outer side plate 18, the first face plate 16 and the second face plate are arranged at intervals, the inner side plate 17 connects the inner edges of the first face plate 16 and the second face plate, the outer side plate 18 connects the outer edges of the first face plate 16 and the second face plate, and the inner side plate 17 and the outer side plate 18 at the legs form the first pin hole 13. The boom support 1 of the utility model is made of plate-welding, the inner side plate 17 and the outer side plate 18 are arranged in parallel at the part corresponding to the first pin hole 13, which is convenient for hole machining, and the cross section of the support leg obtained after welding is rectangular, which has greater bending stiffness and compression capacity compared with the support with a circular steel pipe as the support leg.

[0060] Specifically, two hollow areas are formed in the first face plate 16 and the second face plate, as shown in Figure 2The hollow area is arranged in a triangle, and a reinforcement ring 164 is welded along the edge of the hollow area to improve the structural strength of the boom bracket 1.

[0061] like Figure 2 As shown, in the embodiment of the present invention, the first face panel 16 and the second face panel each include a first plate 161 and a second plate 162. The first plate 161 and the second plate 162 are arranged and spliced ​​along the width direction of the chassis 4, and the splicing surface 163 of the first plate 161 and the second plate 162 is centered and tilted. Arranging the face panels as two plates results in a smaller component and easier processing. The tilted splicing surface 163 increases the stress-bearing area of ​​the weld, preventing the pressure of the boom body from being concentrated at a specific location on the weld, and improving the structural strength after welding.

[0062] In order to achieve the above objectives, the present invention also provides a truck crane, wherein the truck crane includes the boom support device of the above embodiment. Since the truck crane adopts all the technical solutions of the above embodiment, it has at least the above beneficial effects, which will not be described one by one here.

[0063] 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 technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0064] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0065] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. Furthermore, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples, without contradiction.

[0066] Although the embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and the person skilled in the art can make changes, modifications, replacements and modifications to the above embodiments within the scope of the present application.

Claims

1. A jib support apparatus, characterized by, The jib support device comprises: a jib support (1), an upper end of the jib support (1) is used for supporting a jib body, a lower end of the jib support (1) is provided with a first supporting leg (11) and a second supporting leg (12) which are spaced apart in a width direction of a chassis (4), and a first pin mounting hole (13) is provided on the first supporting leg (11) and the second supporting leg (12); a mounting seat assembly (2) which can be arranged on the chassis (4) and is provided with a second pin mounting hole (21); a pin shaft assembly (3) which is detachably arranged in the first pin mounting hole (13) and the second pin mounting hole (21) so that the jib support (1) can be switched between a turnover flat state and a vertical supporting state.

2. The boom support apparatus of claim 1, wherein, The number of the first pin mounting hole (13) is at least two, and at least two first pin mounting holes (13) are sequentially and spaced apart in a length direction of the chassis (4), the number of the second pin mounting hole (21) is consistent with the number of the first pin mounting hole (13), and the second pin mounting hole (21) is in one-to-one correspondence and is connected by the pin shaft assembly (3) in series.

3. The boom support apparatus of claim 1, wherein, The first pin mounting hole (13) comprises a first pin hole provided on the first supporting leg (11) and a second pin hole provided on the second supporting leg (12), the mounting seat assembly (2) comprises two mounting seats (22), the two mounting seats (22) are arranged on left and right sides of the chassis (4) and are each provided with the second pin mounting hole (21), the first supporting leg (11) and the second supporting leg (12) are arranged in one-to-one correspondence with the two mounting seats (22) and are arranged in the corresponding pin holes and the second pin mounting hole (21) by the pin shaft assembly (3).

4. The boom support apparatus of claim 3, wherein, The mounting seat (22) comprises two mounting ear plates (222) which are arranged in opposite directions, a gap between the two mounting ear plates can accommodate the corresponding supporting leg, a limiting column (23) is arranged on the mounting ear plate on the outer side, one end of the limiting column (23) away from the mounting seat assembly (2) is provided with a detachable limiting piece, the pin shaft assembly (3) comprises a first pin shaft (31) and an ear plate (32), the first pin shaft (31) can be arranged in the first pin mounting hole (13) and the second pin mounting hole (21), the ear plate (32) is sleeved on the first pin shaft (31), and the ear plate (32) is further provided with a limiting hole (321) through which the limiting column (23) passes.

5. The boom support apparatus of claim 4, wherein, The mounting seat (22) further comprises a limiting bottom plate (221), the limiting bottom plate (221) is connected to the chassis (4), and one side of the limiting bottom plate (221) facing the jib support (1) is provided with a limiting surface, the limiting surface is used for abutting against the first supporting leg (11) or the second supporting leg (12) when the jib support (1) is in the turnover flat state.

6. The boom support apparatus of claim 1, wherein, The upper end of the boom support (1) forms a support space (14) between the first leg (11) and the second leg (12), and the support space (14) is provided with a buffer assembly (15) supporting the boom body on the two opposite side walls.

7. The boom support apparatus of claim 6, wherein, The buffer assembly (15) comprises a shear-proof seat (151) and a buffer block (152), the shear-proof seat (151) is arranged at the upper end of the corresponding leg, and a shear-proof part (153) is arranged on the side of the shear-proof seat (151) away from the leg, the buffer block (152) is connected with the shear-proof seat (151) through a fastener, and the lower end surface of the buffer block (152) abuts on the shear-proof part (153).

8. The boom support apparatus of any one of claims 1 to 7, wherein, The boom support (1) is a plate-welding piece, comprising a first face plate (16), a second face plate, an inner side plate (17) and an outer side plate (18), the first face plate (16) and the second face plate are arranged opposite and spaced apart, the inner side plate (17) connects the inner edges of the first face plate (16) and the second face plate, the outer side plate (18) connects the outer edges of the first face plate (16) and the second face plate, and the first pin hole (13) is formed on the inner side plate (17) and the outer side plate (18) at the leg.

9. The boom support apparatus of claim 8, wherein, The first face plate (16) and the second face plate each comprise a first plate body (161) and a second plate body (162), the first plate body (161) and the second plate body (162) are sequentially arranged and spliced along the width direction of the chassis (4), and the splicing surface (163) of the first plate body (161) and the second plate body (162) is centrally and obliquely arranged.

10. A truck crane, characterized in that The automobile crane comprises the boom support device according to any one of claims 1 to 9. The automobile crane comprises the boom support device according to any one of claims 1 to 9.

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