Hinge frame and coal car

By adopting a hollow rotary support base and a wire guide plate design in the articulated frame, the problem of solid shafts obstructing the passage in traditional articulated frames is solved, realizing the connection between the front and rear compartments of the coal transport car and the rational arrangement of components, thus improving the vehicle's flexibility and adaptability.

CN223735786UActive Publication Date: 2025-12-30SANY HEAVY EQUIP CO LTD
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Patent Information

Application Number
CN202520397624.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-09
Publication Date
2025-12-30
Estimated Expiration
2035-03-09

AI Technical Summary

Technical Problem

Traditional articulated brackets use a solid shaft at the center axis, which obstructs the front and rear connection channels and affects the connection of hydraulic or electrical systems. At the same time, the bracket structure restricts the placement of components.

Method used

A hollow slewing support base is adopted, and a hollow bearing is used to replace the solid shaft. A cable guide plate is set on the slewing flange plate to provide a pipeline routing channel. Combined with the cable guide plate and partition design in the hinge frame body, the component layout is optimized.

Benefits of technology

It improved the connectivity between the front and rear compartments of the coal truck, achieved a reasonable and efficient arrangement of components, and enhanced the vehicle's flexibility and adaptability.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of hinge frames, in particular to a hinge frame and a coal conveyor. The rotary supporting seat is hinged to the hinge frame body; the rotary supporting seat comprises a rotary flange plate connected with the hollow bearing; the first threading plate is arranged at the central part of the rotary flange plate; the first threading plate is used for carrying out pipeline routing from the center part of the rotary flange plate; the hinge frame body comprises a hinge frame cavity formed by an upper hinge plate, a lower hinge plate and a side hinge plate; the second threading plate is arranged on the side hinge plate and used for being matched with the first threading plate to conduct pipeline routing. A hollow bearing is installed on a rotary flange plate to change a solid shaft into a hollow rotary support, under the condition that rotation of a middle shaft is reserved, a pipeline routing channel is reserved in the middle through a first threading plate, and the communication capacity between a front compartment system and a rear compartment system of the coal conveyor is improved; meanwhile, components can be arranged in the hinge frame body, so that the positions of the components of the whole vehicle can be arranged more reasonably and efficiently.
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Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of articulated frame, and particularly relates to an articulated frame and a coal transport vehicle. BACKGROUND

[0002] The underground coal transport vehicle is an articulated trackless rubber-tyred vehicle used in the underground coal mine of room-and-pillar mining. When the coal transport vehicle runs, the rotation adjustment of the articulated frame can realize the self-adaptation to the bad road conditions and the steering demand of the narrow channel.

[0003] In order to meet the rotation adaptation ability of the coal transport vehicle to the terrain, the front and rear components of the articulated vehicle need to be able to rotate around the center shaft of the articulated frame. Therefore, when the front and rear components have electrical and hydraulic wire harness connections, the connections need to pass through the center shaft.

[0004] However, the center shaft position of the traditional articulated frame adopts a solid shaft to facilitate the transmission of the front and rear power. The solid shaft mode will directly hinder the front and rear connection channels and affect the front and rear connections of the hydraulic or electrical system. In addition, the articulated frame usually adopts a bracket type structure, which limits the arrangement of components. CONTENT OF THE INVENTION

[0005] The present application aims to solve at least one of the technical problems in the prior art or related art, i.e., the center shaft position of the traditional articulated frame adopts a solid shaft to facilitate the transmission of the front and rear power. The solid shaft mode will directly hinder the front and rear connection channels and affect the front and rear connections of the hydraulic or electrical system. In addition, the articulated frame usually adopts a bracket type structure, which limits the arrangement of components.

[0006] To this end, the present application provides an articulated frame. The solid shaft is replaced by a hollow rotating support through a hollow bearing installed on the rotating flange plate. In the case of retaining the rotation of the center shaft, the first threading plate leaves a channel for the pipeline wiring in the middle, thereby improving the connectivity between the front and rear carriage systems of the coal transport vehicle. At the same time, components can be arranged in the articulated frame body, so that the position arrangement of the vehicle components can be more reasonable and efficient.

[0007] The present application also provides a coal transport vehicle comprising the above-mentioned articulated frame.

[0008] According to the articulated frame of the first aspect of the present application, the articulated frame comprises: a hinged frame body; a rotating support seat hinged to the hinged frame body; the rotating support seat comprises: a rotating flange plate connected with a hollow bearing; a first threading plate arranged at the center of the rotating flange plate; the first threading plate is used for pipeline wiring from the center of the rotating flange plate; the hinged frame body comprises: a side hinge plate arranged between an upper hinge plate and a lower hinge plate, the upper hinge plate, the lower hinge plate and the side hinge plate forming a hinged frame cavity; a second threading plate arranged on the side hinge plate; the second threading plate is used for pipeline wiring in cooperation with the first threading plate.

[0009] Optionally, the rotary support base further comprises: a bearing pressing plate arranged on the rotary flange plate; side plates arranged on both sides of the bearing pressing plate; and oil cylinder mounting ears arranged on the side plates.

[0010] Optionally, nylon plates are arranged on the side plates to protect the pipelines.

[0011] Optionally, the hinged frame body further comprises: a pull plate arranged at the front end of the hinged frame cavity, and the pull plate is hingedly connected to the bearing pressing plate.

[0012] Optionally, the hinged frame body further comprises: an inner reinforcing partition plate arranged between the upper hinged plate and the lower hinged plate, and the inner reinforcing partition plate is used to divide the hinged frame cavity into a middle cavity for avoiding the rear-side moving components.

[0013] Optionally, the hinged frame body further comprises: a partition plate arranged between the upper hinged plate and the lower hinged plate, and the partition plate cooperates with the inner reinforcing partition plate to divide the hinged frame cavity into an inner cavity for arranging components and an outer cavity for mounting the steering oil cylinder.

[0014] Optionally, the upper hinged plate is provided with an oil cylinder maintenance hole corresponding to the outer cavity.

[0015] Optionally, the upper hinged plate is provided with an inner cavity maintenance hole corresponding to the inner cavity.

[0016] Optionally, the upper hinged plate is provided with a tool storage ear plate and a tool use ear plate.

[0017] According to the second aspect of the present application, a coal transport vehicle comprises the hinged frame of the first aspect or any of the implementation manners thereof.

[0018] The above technical solution has at least the following advantages or beneficial effects:

[0019] The hinged frame of the present application comprises: a hinged frame body; a rotary support base hingedly connected to the hinged frame body; the rotary support base comprises: a rotary flange plate connected to a hollow bearing; a first wire passing plate arranged at the center of the rotary flange plate; the first wire passing plate is used for wire routing from the center of the rotary flange plate; the hinged frame body comprises: a side hinged plate arranged between an upper hinged plate and a lower hinged plate, and the upper hinged plate, the lower hinged plate and the side hinged plate form a hinged frame cavity; and a second wire passing plate arranged on the side hinged plate; the second wire passing plate is used for wire routing in cooperation with the first wire passing plate. By installing the hollow bearing on the rotary flange plate, the solid shaft is changed into a hollow rotary support, and in the case of retaining the middle shaft rotation, a channel for pipeline routing is left in the middle through the first wire passing plate, thereby improving the connectivity between the front and rear carriage systems of the coal transport vehicle; meanwhile, components can be arranged in the hinged frame body, so that the position arrangement of the vehicle components can be more reasonable and efficient.

[0020] The coal transport vehicle provided by the embodiment of the present application is provided with the articulated frame, and the articulated frame has the technical effects described above, so the coal transport vehicle provided with the articulated frame should also have corresponding technical effects. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly explain the technical solutions of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows. Obviously, for those skilled in the art, other drawings can also be obtained based on these drawings without any creative effort.

[0022] Figure 1 A structural schematic diagram of an articulated frame provided by the present application is shown;

[0023] Figure 2 A structural schematic diagram of a hinge frame body in an articulated frame provided by the present application is shown;

[0024] Figure 3 A structural schematic diagram of an inner reinforcing partition plate in an articulated frame provided by the present application is shown;

[0025] Figure 4 A structural schematic diagram of a rotary support seat in an articulated frame provided by the present application is shown;

[0026] Figure 5 A structural schematic diagram of a rotary support seat in an articulated frame provided by the present application is shown;

[0027] Figure 6 A structural schematic diagram of a traditional articulated frame is shown.

[0028] Explanation of reference signs:

[0029] 1, rotary support seat, 11, rotary flange plate, 12, bearing pressing plate, 13, side plate, 14, first threading plate, 15, oil cylinder mounting lug, 16, nylon plate, 2, hinge frame body, 21, upper hinge plate, 22, lower hinge plate, 23, side hinge plate, 24, pull plate, 25, second threading plate, 26, inner reinforcing partition plate, 27, partition plate, 28, middle chamber, 29, inner chamber, 210, outer chamber, 211, oil cylinder maintenance hole, 212, inner chamber maintenance hole, 213, tool storage lug plate, 214, tool use lug plate, 3, hollow bearing. DETAILED DESCRIPTION

[0030] In order to better explain the present application and facilitate understanding, the present application will be described in detail in combination with the drawings and specific embodiments. The orientation terms such as "upper", "lower", "front", "rear", "inner" and "outer" mentioned in this paper are used to Figure 1 and Figure 2The orientation is referred to. The position of the upper hinge plate 21 relative to the lower hinge plate 22 is defined as "upper"; the position of the rotary support seat 1 relative to the hinge body 2 is defined as "front"; and the position of the first wire plate 14 relative to the rotary flange plate 11 is defined as "inner".

[0031] As described above, the conventional articulated frame usually adopts a solid shaft mode with the center of the oil cylinder on both sides, as shown in the figure. Figure 6 As shown in the figure, the hydraulic oil cylinder is arranged on both sides, which is convenient for steering control; the center position of the articulated frame adopts a solid rotary shaft mode, which is convenient for terrain adaptation and connection of front and rear components. Since the turning adaptation capability of the coal truck to the terrain requires that the front and rear components of the articulated truck can rotate around the center shaft of the articulated frame, when the front and rear components need to be connected by electrical and hydraulic lines, they can only pass through the center shaft position. The center shaft position of the conventional articulated frame adopts a solid shaft to facilitate the transmission of power between the front and rear components, but the solid shaft mode will directly block the connection channel of the front and rear components, affecting the connection of the hydraulic or electrical system. At the same time, the articulated frame usually adopts a support structure, which limits the arrangement of components.

[0032] In order to at least solve one of the technical problems existing in the prior art or related art, the present application provides an articulated frame and a coal truck, which comprises: a hinge body; a rotary support seat hinged to the hinge body; the rotary support seat comprises: a rotary flange plate connected with a hollow bearing; a first wire plate arranged at the center of the rotary flange plate; the first wire plate is used for wire routing from the center of the rotary flange plate; the hinge body comprises: a side hinge plate arranged between an upper hinge plate and a lower hinge plate; the upper hinge plate, the lower hinge plate and the side hinge plate form a hinge cavity; a second wire plate arranged on the side hinge plate; the second wire plate is used for wire routing in cooperation with the first wire plate. By installing a hollow bearing on the rotary flange plate, the solid shaft is changed to a hollow rotary support, while retaining the rotary function of the center shaft, the first wire plate leaves a channel for wire routing in the middle, improving the connectivity between the front and rear carriages of the coal truck; at the same time, components can be arranged in the hinge body, making the position arrangement of the components of the whole vehicle more reasonable and efficient.

[0033] The articulated frame and the coal truck according to some embodiments provided by the present application are described below with reference to the accompanying drawings.

[0034] Referring to Figures 1 to 5 , the present application provides an articulated frame, which comprises: a hinge body 2; a rotary support seat 1 hinged to the hinge body 2; the rotary support seat 1 comprises: a rotary flange plate 11 connected with a hollow bearing 3; a first wire plate 14 arranged at the center of the rotary flange plate 11; the first wire plate 14 is used for wire routing from the center of the rotary flange plate 11; the hinge body 2 comprises: a side hinge plate 23 arranged between an upper hinge plate 21 and a lower hinge plate 22; the upper hinge plate 21, the lower hinge plate 22 and the side hinge plate 23 form a hinge cavity; a second wire plate 25 arranged on the side hinge plate 23; the second wire plate 25 is used for wire routing in cooperation with the first wire plate 14.

[0035] As shown in Figure 1 , the rotary support seat 1 is used to connect with the front body of the coal transport vehicle, and the hinged frame body 2 is used to connect with the rear body of the coal transport vehicle; the hollow bearing 3 is arranged on the rotary flange plate 11, so that the front body can rotate relative to the center point of the rotary flange plate 11, for front body rotation adjustment, thereby increasing the flexibility and adaptability of the vehicle; the rotary support seat 1 and the hinged frame body 2 are hingedly arranged, so that the front body can flexibly adapt to different driving directions and angles, for realizing the steering requirement of the coal transport vehicle.

[0036] The first threading plate 14 provides a centralized and orderly wiring path, which facilitates the wiring of the pipeline from the center part of the rotary flange plate 11, thereby solving the problem that the solid shaft mode blocks the front and rear connection channels and affects the front and rear connection of the hydraulic or electrical system. The hinged frame cavity composed of the upper hinged plate 21, the lower hinged plate 22 and the side hinged plate 23 can arrange components, such as hydraulic elements, valve blocks, electrical elements, etc., so that the position arrangement of the vehicle components can be more reasonable and efficient. The second threading plate 25 cooperates with the first threading plate 14 on the rotary flange plate 11 to form a complete pipeline wiring path, so that the pipeline can pass through the first threading plate 14 from the center of the rotary flange plate 11, and then enter the hinged frame cavity through the second threading plate 25. In the hinged frame cavity, the pipeline can be connected to each component to provide necessary power, signal or fluid transmission.

[0037] In an exemplary embodiment, as shown in Figure 4 and Figure 5 , the rotary support seat 1 further comprises: a bearing pressing plate 12 arranged on the rotary flange plate 11; a side plate 13 arranged on both sides of the bearing pressing plate 12; and an oil cylinder mounting lug 15 arranged on the side plate 13.

[0038] The two bearing pressing plates 12 are distributed in the vertical direction and arranged on the back of the rotary flange plate 11 for mounting the hinged bearing; the two side plates 13 and the two bearing pressing plates 12 form a frame structure, which not only provides necessary support for the installation of the hinged bearing, but also provides a channel for the wiring of the pipeline, and the pipeline can be effectively protected in the frame structure.

[0039] The oil cylinder mounting lugs 15 are used in pairs and respectively located on both sides of the two side plates 13 for connecting the steering oil cylinders. The oil cylinder mounting lugs 15 are provided with pin holes for hinging with the piston rod end of the steering oil cylinder. The steering oil cylinders are also used in pairs and respectively mounted on both sides of the hinged frame body 2. When the piston rod of the steering oil cylinder on one side extends, the piston rod of the steering oil cylinder on the other side retracts, thereby pushing the rotary flange plate 11 to steer. For example, when the piston rod of the steering oil cylinder on the left side extends, the piston rod of the steering oil cylinder on the right side retracts, thereby pushing the rotary flange plate 11 to steer to the right.

[0040] In an illustrative embodiment, the side plate 13 is provided with a nylon plate 16 for protecting the pipeline. The nylon plate 16 is a flat plate-shaped component made of nylon material, which is a high-performance thermoplastic with excellent wear resistance, self-lubricating, corrosion resistance and insulation performance, often used as wear-resistant, friction-reducing or protective components to protect other components from wear, corrosion or damage. Since the rotary flange plate 11 turns left and right, it is easy to cause the pipeline to be rubbed, pressed or impacted by the side plate 13, resulting in damage or leakage. The nylon plate 16 on the side plate 13 can protect the pipeline from these potential damages, and the wear resistance and self-lubricating of the nylon material can help reduce the friction between the pipeline and the side plate 13, thereby reducing the wear rate of the pipeline.

[0041] In an illustrative embodiment, as shown in Figure 3 The hinged frame body 2 further comprises a pull plate 24 arranged at the front end of the hinged frame cavity, and the pull plate 24 is hinged to the bearing pressing plate 12. The pull plate 24 is designed in a triangular shape to increase the strength and stability of the structure; two pull plates 24 are respectively arranged on the upper and lower sides of the bearing pressing plate 12 to form a clamping structure, and the hinge bearing on the bearing pressing plate 12 and the hinge hole on the two pull plates 24 are inserted by a pin shaft to realize the hinge connection between the rotary support seat 1 and the hinged frame body 2. Since the two pull plates 24 form a clamping structure, one pull plate 24 is integrally formed with the upper hinge plate 21 or the lower hinge plate 22; the other pull plate 24 is arranged on the side plate 13 and adopts a V-shaped embedded structure with the side plate 13, which has better bearing performance.

[0042] In an illustrative embodiment, as shown in Figure 2 The hinged frame body 2 further comprises an inner reinforcing partition plate 26 arranged between the upper hinge plate 21 and the lower hinge plate 22; the inner reinforcing partition plate 26 is used to divide the hinged frame cavity into a middle chamber 28, and the middle chamber 28 is used to avoid the rear side moving components.

[0043] The inner reinforcing partition plate 26 has two, which are located in the middle part of the hinged frame cavity, and can not only enhance the strength and rigidity of the entire hinged frame cavity, but also divide the hinged frame cavity into the middle chamber 28; the middle chamber 28 is specially designed to avoid the rear side moving components to ensure that these components can move freely and perform their functions.

[0044] In an illustrative embodiment, the hinged frame body 2 further comprises a partition plate 27 arranged between the upper hinge plate 21 and the lower hinge plate 22; the partition plate 27 cooperates with the inner reinforcing partition plate 26 to divide the hinged frame cavity into an inner chamber 29, and the inner chamber 29 is used to arrange components; the partition plate 27 cooperates with the side hinge plate 23 to divide the hinged frame cavity into an outer chamber 210, and the outer chamber 210 is used to install the steering oil cylinder.

[0045] The partition plate 27 also has two, respectively, in the middle chamber 28 both sides of the symmetrically arranged, so that the two sides of the inner chamber 29 and the outer chamber 210 are also symmetrically arranged. The inner chamber 29 is used to arrange components, such as hydraulic components, valve blocks, electrical components, etc.; the outer chamber 210 is used to install the steering oil cylinder, so that the position arrangement of the vehicle components can be more reasonable and efficient.

[0046] In an illustrative embodiment, the upper hinge plate 21 is provided with an oil cylinder maintenance hole 211 corresponding to the area of the outer chamber 210. The oil cylinder maintenance hole 211 is the installation position of the steering oil cylinder in the outer chamber 210, which can provide a channel for the maintenance and maintenance of the steering oil cylinder. When the steering oil cylinder fails or needs regular maintenance, the operator can check, repair or replace the steering oil cylinder through the oil cylinder maintenance hole 211. It can be understood that the oil cylinder maintenance hole 211 is provided with a cover plate for protecting the oil cylinder maintenance hole 211, preventing dust, moisture, debris, etc. from entering the outer chamber 210, causing damage to the steering oil cylinder or other key components.

[0047] In an illustrative embodiment, the upper hinge plate 21 is provided with an inner chamber maintenance hole 212 corresponding to the area of the inner chamber 29. The inner chamber maintenance hole 212 is the installation position of the components in the inner chamber 29, which can provide a channel for the maintenance and maintenance of the components. When the components in the inner chamber 29 fail or need regular maintenance, the operator can check, repair or replace the components through the inner chamber maintenance hole 212. It can be understood that the inner chamber maintenance hole 212 is provided with a cover plate for protecting the inner chamber maintenance hole 212, preventing dust, moisture, debris, etc. from entering the inner chamber 29, causing damage to the components or other key components.

[0048] In an illustrative embodiment, the upper hinge plate 21 is provided with a tool storage lug 213 and a tool use lug 214. The tool storage lug 213 is used to store the hinge fixing tool, and the tool use lug 214 is used to install the hinge fixing tool when repairing. The hinge fixing tool is a special tool to prevent the rotary support seat 1 from moving with the hinge frame body 2. When repairing, the operator will work between the rotary support seat 1 and the hinge frame body 2, and if the rotary support seat 1 and the hinge frame body 2 move, it may collide with the operator and cause injury. Therefore, in order to avoid personal injury, the hinge fixing tool needs to be installed on the tool use lug 214 during maintenance, so as to fix the rotary support seat 1 and the hinge frame body 2. The design of the tool storage lug 213 can facilitate the operator to quickly and conveniently take and return the hinge fixing tool.

[0049] Based on the articulated frame provided in the above embodiments, some embodiments of the present application further provide a coal transport vehicle comprising the articulated frame provided in the above embodiments. Since the coal transport vehicle provided in the present embodiment has the articulated frame provided in any one of the above embodiments, the coal transport vehicle has all the beneficial effects of the articulated frame provided in any one of the above embodiments, which will not be described herein again.

[0050] In the description of the present application, it needs to be understood that the terms "first", "second" are only for descriptive purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly specified and limited.

[0051] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixed connection, or detachable connection, or integrated; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0052] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature, can be directly above or obliquely above the first feature, or only means that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature, can be directly below or obliquely below the first feature, or only means that the horizontal height of the first feature is lower than that of the second feature.

[0053] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "embodiment", "exemplary embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are contained in at least one embodiment or example of the present application. In the present application, 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 one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples described in the present application and the features of different embodiments or examples, without contradiction.

[0054] Although the embodiments of the present application have been shown and described above, it is understood that the above-described embodiments are exemplary and are not to be construed as limiting the present application, and that modifications, substitutions, replacements and variations of the above-described embodiments can be made by those skilled in the art within the scope of the present application.

Claims

1. An articulating frame, characterized by, The utility model relates to a kind of rotary support seat and hinge frame, comprising: Hinge frame body (2); Rotary support seat (1), hinge with the hinge frame body (2); The rotary support seat (1) includes: rotary flange plate (11), is connected with hollow bearing (3); First threading plate (14) is arranged in the center of the rotary flange plate (11);The first threading plate (14) is used for from the center of the rotary flange plate (11) to carry out pipeline wiring; The hinge frame body (2) includes: side hinge plate (23) is arranged between upper hinge plate (21) and lower hinge plate (22), and the upper hinge plate (21), the lower hinge plate (22) and the side hinge plate (23) form hinge cavity; Second threading plate (25) is arranged on the side hinge plate (23);The second threading plate (25) is used for cooperating the first threading plate (14) to carry out pipeline wiring.

2. A hinged stand as claimed in claim 1, characterized in that The rotary support seat (1) further includes: bearing pressing plate (12) is arranged on the rotary flange plate (11); Side plate (13) is arranged on both sides of the bearing pressing plate (12); Oil cylinder mounting lug (15) is arranged on the side plate (13).

3. A hinged stand as claimed in claim 2, wherein, Nylon plate (16) is provided on the side plate (13), and the nylon plate (16) is used to protect pipeline.

4. A hinged stand as claimed in claim 2, wherein, The hinge frame body (2) further includes: pull plate (24) is arranged at the front end of the hinge cavity, and the pull plate (24) is hinged with the bearing pressing plate (12).

5. A hinged stand as claimed in claim 1, wherein, The hinge frame body (2) further includes: inner reinforcing partition (26) is arranged between the upper hinge plate (21) and the lower hinge plate (22);The inner reinforcing partition (26) is used to separate the hinge cavity into middle chamber (28), and the middle chamber (28) is used to avoid rear side moving component.

6. A hinged stand as claimed in claim 5, wherein, The hinge frame body (2) further includes: partition plate (27) is arranged between the upper hinge plate (21) and the lower hinge plate (22); The partition plate (27) and the inner reinforcing partition (26) cooperate to separate the hinge cavity into inner chamber (29), and the inner chamber (29) is used to arrange components; The partition plate (27) and the side hinge plate (23) cooperate to separate the hinge cavity into outer chamber (210), and the outer chamber (210) is used to install steering oil cylinder.

7. A hinged stand as claimed in claim 6, wherein, The upper hinge plate (21) is provided with oil cylinder maintenance hole (211) corresponding to the region of the outer chamber (210).

8. A hinged stand as claimed in claim 6, wherein, The upper hinge plate (21) is provided with inner chamber maintenance hole (212) corresponding to the region of the inner chamber (29).

9. A hinged stand as claimed in claim 1, wherein, Tool storage lug plate (213) and tool use lug plate (214) are provided on the upper hinge plate (21).

10. A coal car characterized by, The utility model relates to a kind of rotary support seat and hinge frame, comprising: The hinge frame as claimed in any one of claims 1-9.