Movable gun carrier

Abstract

A movable gun carrier comprises a carrier body, a hoisting system and a counterweight assembly, the counterweight assembly is arranged at the tail of the carrier body, a movable roller assembly is arranged at the bottom of the carrier body, positioning assemblies are arranged on the front portion and the rear portion of the carrier body respectively, and the positioning assemblies are arranged on the two sides of the carrier body respectively. Each positioning assembly comprises an adjusting screw sleeve only rotationally arranged on the trolley body, an adjusting lead screw matched with the adjusting screw sleeve and a positioning plate fixedly arranged at the bottom of the adjusting lead screw, and when the trolley body is in a moving state, the positioning plate is higher than the lowest point of the moving roller assembly. When the vehicle body is in a hoisting state, the positioning plate is lower than the lowest point of the moving roller assembly and supports the ground, a synchronous control mechanism for driving the adjusting screw sleeves to rotate synchronously is arranged between the adjusting screw sleeves, the working stability is guaranteed, switching is convenient, and labor is saved in operation.

Description

Technical Field

[0001] This application relates to the field of hoisting, and more particularly, to a mobile gun carriage. Background Art

[0002] As Figure 1 shown, in the prior art, a mobile gun carriage for construction consists of a vehicle body, a hoisting system, and a counterweight. The entire vehicle body is 5100 mm long, 1100 mm wide, and 2250 mm high from the rear of the vehicle to the hoisting pulley point. It is welded with square steel pipes or channel steels. After welding, it is painted and numbered, and nylon universal wheels are installed at the bottom for easy movement. A fixed support arm is provided at the front end and is lowered during hoisting to stabilize the crane. The hoisting system consists of a winch, a front boom, and a pull rod. The front boom is welded with square steel and fixed to the front of the vehicle body with pins and can rotate. The front boom can be retracted when the crane is transferred to other construction sections for easy transportation. A counterweight cement block is provided at the rear of the crane to enhance the stability of the crane.

[0003] Since it needs to be stable during hoisting, but for easy movement, moving rollers are provided at the bottom of its vehicle body. Therefore, it is necessary to ensure that during hoisting, the bottom surface is not supported by the moving rollers. Thus, multiple sets of support structures are provided on the vehicle body. During movement, the support structures are retracted and the vehicle is moved through the moving rollers. During hoisting, the bottom surface is supported by the support structures, making the moving rollers suspended, thereby ensuring the stability of hoisting. However, there are still certain defects in the prior art during actual operation: Firstly, there are two ways to switch the support structure. One is driven by a hydraulic cylinder, but due to factors such as the counterweight and the load during hoisting, the hydraulic cylinder is prone to damage. The other way is manual operation and adjustment. During manual operation, since multiple positions need to be operated, it is time-consuming and laborious, and the efficiency is low.

[0004] In view of this, those skilled in the art need to improve the existing mobile gun carriage. Summary of the Utility Model

[0005] The main purpose of this application is to provide a mobile gun carriage that not only ensures the stability of work but also is convenient to switch and labor-saving to operate.

[0006] To achieve the above object, in a first aspect, the present application provides a mobile gun carriage, including a vehicle body, a hoisting system, and a counterweight assembly. The counterweight assembly is disposed at the rear of the vehicle body. A mobile roller assembly is provided at the bottom of the vehicle body. Positioning assemblies are respectively provided at the front and rear of the vehicle body. Each group of the positioning assemblies is respectively disposed on both sides of the vehicle body. Each group of the positioning assemblies includes an adjusting nut rotatably disposed only on the vehicle body, an adjusting screw rod cooperating with the adjusting nut, and a positioning plate fixedly disposed at the bottom of the adjusting screw rod. When the vehicle body is in a moving state, the positioning plate is higher than the lowest point of the mobile roller assembly. When the vehicle body is in a hoisting state, the positioning plate is lower than the lowest point of the mobile roller assembly and forms a support for the ground. A synchronous control mechanism is provided between the adjusting nuts to drive them to rotate synchronously.

[0007] Further improved, the synchronous control mechanism includes a driving gear rotatably disposed on the vehicle body, a variable-frequency motor driving the driving gear to rotate, two driving racks sliding relative to the vehicle body, and transmission gears concentric with and fixedly disposed on each adjusting nut. The two driving racks are respectively located on both sides of the driving gear, and each side of each driving rack has a first tooth profile section and a second tooth profile section. The first tooth profile section meshes with the transmission gear, and the second tooth profile section meshes with the driving gear.

[0008] Further improved, a guiding structure is provided between the driving rack and the vehicle body.

[0009] Further improved, the guiding structure includes a guiding groove opened at the bottom of the driving rack and a guide rail fixedly disposed on the vehicle body and cooperating with the guiding groove.

[0010] Further improved, the counterweight assembly includes a plurality of counterweight blocks with jacks formed in the middle, and a plug post fixedly disposed on the vehicle body and cooperating with the jacks.

[0011] Further improved, the mobile roller assembly includes a wheel support fixedly disposed at the bottom of the vehicle body and a mobile roller rotatably connected to the wheel support.

[0012] Further improved, the hoisting system includes two front suspension arms fixedly disposed at the lower end on the vehicle body, two rear suspension arms fixedly disposed at the lower end on the vehicle body. The upper ends of the rear suspension arms are respectively fixedly connected to the corresponding side of the front suspension arms. A rope pulley is rotatably disposed at the upper end of the front suspension arm. It further includes a hoisting wire rope assembly cooperating with the rope pulley.

[0013] Further improved, the hoisting wire rope assembly includes a winch disposed on the vehicle body, a wire rope cooperating with the winch, and a hook fixedly disposed at one end of the wire rope.

[0014] Compared with the prior art, a mobile gun carriage provided by the present utility model has the beneficial effects that by providing a synchronous control mechanism, it can drive the forward or reverse rotation of the adjusting nut sleeve simultaneously, thereby enabling the simultaneous adjustment of the height of the positioning plate, facilitating the switching between the moving state and the hoisting state of the mobile gun carriage, and eliminating the need for cumbersome manual operations. The operator only needs to control the control switch of the synchronous control mechanism, which is time-saving and labor-saving. Moreover, since a hydraulic cylinder is not used, the gravity of the counterweight and the hoisting load will not directly act on the hydraulic cylinder, thus extending the service life and ensuring safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings that form a part of this application are used to provide a further understanding of this application, making other features, objects, and advantages of this application more apparent. The schematic embodiments and their descriptions of this application are used to explain this application and do not constitute an improper limitation of this application. In the drawings:

[0016] Figure 1 is a schematic diagram of the prior art;

[0017] Figure 2 is a schematic diagram of the present utility model;

[0018] Figure 3 is a schematic diagram of the synchronous control mechanism.

[0019] Wherein: 1, vehicle body; 2, mobile roller assembly; 3, front suspension arm; 4, rear suspension arm; 5, counterweight assembly; 6, adjusting lead screw; 7, adjusting nut sleeve; 8, positioning plate; 9, transmission gear; 10, driving rack; 11, driving gear; 12, winch; 13, hoisting wire rope; 14, rope pulley; 15, hook. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] In order to enable those skilled in the art to better understand the solution of this application, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0021] It should be noted that the terms "first", "second", etc. in the description, claims and the above-mentioned drawings of the present application are used to distinguish similar objects, and do not necessarily describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so as to implement the embodiments of the present application described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units does not necessarily limit to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0022] In the present application, the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", etc. is based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit that the indicated devices, elements or components must have a specific orientation, or be constructed and operated in a specific orientation.

[0023] Moreover, in addition to being able to represent an orientation or positional relationship, some of the above terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the present application can be understood according to specific circumstances.

[0024] In addition, the meaning of the term "plurality" should be two or more.

[0025] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0026] Such as Figures 2 - 3As shown in the figure, a mobile gun carriage includes a vehicle body 1, a hoisting system, and a counterweight assembly 5. The counterweight assembly 5 is arranged at the rear of the vehicle body 1. A mobile roller assembly 2 is provided at the bottom of the vehicle body 1. Positioning assemblies are respectively arranged at the front and rear of the vehicle body 1. Each group of the positioning assemblies is respectively arranged on both sides of the vehicle body 1. Each group of the positioning assemblies includes an adjusting sleeve 7 rotatably arranged only on the vehicle body 1, an adjusting lead screw 6 cooperating with the adjusting sleeve 7, and a positioning plate 8 fixedly arranged at the bottom of the adjusting lead screw 6. When the vehicle body 1 is in a moving state, the positioning plate 8 is higher than the lowest point of the mobile roller assembly 2. When the vehicle body 1 is in a hoisting state, the positioning plate 8 is lower than the lowest point of the mobile roller assembly 2 and forms a support for the ground. A synchronous control mechanism is arranged between the adjusting sleeves 7 to drive them to rotate synchronously.

[0027] Specifically, the synchronous control mechanism includes a driving gear 11 rotatably arranged on the vehicle body 1, a variable-frequency motor for driving the driving gear 11 to rotate, two driving racks 10 sliding relative to the vehicle body 1, and transmission gears 9 concentric with and fixedly arranged on each adjusting sleeve 7. The two driving racks 10 are respectively located on both sides of the driving gear 11. Each side of each driving rack 10 has a first tooth-shaped section and a second tooth-shaped section. The first tooth-shaped section meshes with the transmission gear 9, and the second tooth-shaped section meshes with the driving gear 11.

[0028] Synchronous adjustment principle: If it is necessary to raise the positioning plate 8, when the mobile gun carriage is switched to the moving state, start the variable-frequency motor. The motor drives the driving gear 11 to rotate. Thus, the two driving racks 10 meshing with it slide under the drive of the driving gear 11. During the sliding process, due to meshing with the transmission gear 9, all the transmission gears 9 are driven to rotate. Thus, the adjusting sleeves 7 are driven to rotate. Since the adjusting sleeves 7 are only rotatably arranged on the vehicle body 1, the height of the adjusting lead screw 6 changes, driving the lifting and lowering of the positioning plate 8, realizing synchronous adjustment. Compared with the hydraulic cylinder control, since the gravity of the counterweight and the hoisting load will not affect the variable-frequency motor, the service life is long and the safety stability coefficient is high. Compared with manual operation, the advantages are more obvious. The operator does not need to perform cumbersome physical labor and only needs to operate the variable-frequency motor, which is time-saving and labor-saving.

[0029] To ensure the stability of the sliding of the driving rack 10, a guiding structure is arranged between the driving rack 10 and the vehicle body 1. The guiding structure includes a guiding groove opened at the bottom of the driving rack 10 and a guide rail fixedly arranged on the vehicle body 1 and cooperating with the guiding groove.

[0030] In order to facilitate adjusting the counterweight according to the lifting load, the counterweight assembly 5 includes a plurality of counterweight blocks with jacks formed in the middle, and the vehicle body 1 is fixedly provided with insertion columns that cooperate with the jacks.

[0031] Preferably in this embodiment, the moving roller assembly 2 includes a wheel bracket fixedly provided at the bottom of the vehicle body 1 and moving rollers rotatably connected to the wheel bracket.

[0032] Preferably in this embodiment, the hoisting system includes two front suspension arms 3 with their lower ends fixedly provided on the vehicle body 1, two rear suspension arms 4 with their lower ends fixedly provided on the vehicle body 1. The upper ends of the rear suspension arms 4 are respectively fixedly connected to the corresponding side of the front suspension arms 3. A rope pulley 14 is rotatably provided at the upper end of the front suspension arm 3. It further includes a hoisting steel wire rope 13 assembly that cooperates with the rope pulley 14. The hoisting steel wire rope 13 assembly includes a winch 12 provided on the vehicle body 1, a steel wire rope that cooperates with the winch 12, and a hook 15 fixedly provided at one end of the steel wire rope.

[0033] For the processing and manufacturing of the base of the winch 12, take 2 steel square tubes with a length of 3.6 meters and a specification of 90*60*5 and 7 steel square tubes with a length of 1.1 meters and a specification of 50*5mm. Weld all around and fully weld according to the following figure, and the weld grade is grade three.

[0034] After the base is welded, install the moving rollers on the vehicle body 1 for convenient movement.

[0035] Using the principle of a crane, fully weld the assembled steel plate supports to the side of the base as shown in the following figure (grade three welds). The supports can be adjusted. When the gun truck is hoisting, use the supports to transfer the force to the ground to meet the requirement of balanced force.

[0036] For the installation of the front suspension arm 3, use 2 steel square tubes with a length of 2.8 meters and a specification of 90*60*5mm and 3 angle steels with a specification of L50*5mm to fully weld according to the following figure, and then use a cotter pin to fix the rope pulley 14 to the top of the steel square tube.

[0037] Fix the welded front suspension arm 3 to the base with M12*90mm stainless steel bolts.

[0038] Fix 2 steel square tubes with a length of 3.5 meters and a specification of 100*60*5mm to the front suspension ratio and the vehicle body 1 with M12*90mm stainless steel bolts.

[0039] Take 4 steel pipes with an outer diameter of 20mm and weld them to the rear end of the gun truck for fixing the counterweight.

[0040] Weld a four-sided base under the 2T winch 12 that has been approved for inspection, and then fix the winch base to the vehicle body 1 with M12*90mm stainless steel bolts.

[0041] The installation positioning components and the synchronous driving mechanism are installed, thus completing the overall installation of the mobile gun carriage.

[0042] The above are only the preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A mobile artillery vehicle, characterized in that: It includes a vehicle body, a lifting system and a counterweight assembly, wherein the counterweight assembly is arranged at the rear of the vehicle body, a moving roller assembly is arranged at the bottom of the vehicle body, and positioning assemblies are respectively arranged at the front and rear of the vehicle body, and each group of the positioning assemblies is respectively arranged on both sides of the vehicle body, and each group of the positioning assemblies includes an adjusting screw sleeve that is only rotatably arranged on the vehicle body, an adjusting screw screw that cooperates with the adjusting screw sleeve, and a positioning plate that is fixedly arranged at the bottom of the adjusting screw screw. When the vehicle body is in a moving state, the positioning plate is higher than the lowest point of the moving roller assembly. When the vehicle body is in a lifting state, the positioning plate is lower than the lowest point of the moving roller assembly and forms support on the ground. A synchronous control mechanism is arranged between the adjusting screw sleeves to drive them to rotate synchronously.

2. A mobile artillery vehicle as claimed in claim 1, characterized in that: The synchronous control mechanism includes a driving gear rotatably arranged on the vehicle body, a variable frequency motor driving the driving gear to rotate, two driving racks sliding relative to the vehicle body, and a transmission gear concentric with and fixed to each adjusting screw sleeve, the two driving racks are respectively located on both sides of the driving gear, and each of the driving racks has a first tooth segment and a second tooth segment on both sides, the first tooth segment is meshed with the transmission gear, and the second tooth segment is meshed with the driving gear.

3. A mobile artillery vehicle as claimed in claim 2, characterized in that: A guide structure is arranged between the driving rack and the vehicle body.

4. A mobile gun carriage as claimed in claim 3, characterized in that: The guide structure comprises a guide groove arranged at the bottom of the driving rack and a guide rail fixedly arranged on the vehicle body and matched with the guide groove.

5. A mobile artillery vehicle as claimed in claim 1, characterized in that: The counterweight assembly comprises a plurality of counterweight blocks with insertion holes in the middle, and a plug-in column matched with the insertion holes is fixedly arranged on the vehicle body.

6. A mobile artillery vehicle as claimed in claim 1, characterized in that: The movable roller assembly comprises a wheel bracket fixedly arranged at the bottom of the vehicle body and a movable roller rotatably connected to the wheel bracket.

7. A mobile gun carriage as claimed in claim 1, characterized in that: The lifting system includes two front suspension arms whose lower ends are fixedly arranged on the vehicle body, and two rear suspension arms whose lower ends are fixedly arranged on the vehicle body. The upper ends of the rear suspension arms are respectively fixedly connected to the front suspension arms on the corresponding sides. The upper ends of the front suspension arms are rotatably provided with a pulley, and also include a lifting wire rope assembly that cooperates with the pulley.

8. A mobile gun carriage as claimed in claim 7, characterized in that: The hoisting wire rope assembly comprises a winch arranged on the vehicle body, a wire rope matched with the winch, and a hook fixedly arranged on one end of the wire rope.

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