Middle beam horse head stress structure of tricycle

Abstract

The utility model discloses a tricycle middle beam horse head stress structure, which relates to the technical field of tricycles, and comprises a middle beam main body and a horse head pipe main body, and further comprises an assembling and positioning unit and a reinforcing unit which are arranged between the middle beam main body and the horse head pipe main body, the assembling and positioning unit comprises an inserting block and a stop block; each reinforcing unit comprises a reinforcing strip plate, a connecting plate and a locking screw. According to the horse head pipe, the two sets of inserting blocks at the ends of the two straight pipes can be inserted into the inserting grooves in the top faces and the bottom faces of the ends of the inclined pipe parts in a one-to-one correspondence mode, the inclined pipe parts and the two straight pipes are positioned and assembled, the ends of the transverse pipe parts can abut against the check blocks on the side walls of the ends of the straight pipes at the same time, and the horse head pipe body and the middle beam body are thoroughly assembled. The inserting grooves and the inserting blocks can be matched with the inclined pipe parts to be welded to multiple follow-up positions of the two straight pipes, the check blocks are matched with the transverse pipe parts to increase the welding areas of the check blocks and the straight pipes, and the horse head pipe body and the middle beam body are easy and convenient to assemble and high in welding stability.

Description

Technical Field

[0001] The utility model relates to the technical field of tricycles, and particularly relates to a force-bearing structure of a middle beam head of a tricycle. Background Art

[0002] A tricycle refers to a vehicle with three wheels, which is transformed from a bicycle and can carry people or goods. A tricycle is a combination of a rickshaw and a bicycle, and can be divided into a manual tricycle, an electric tricycle, a children's tricycle, a battery tricycle, etc. Among them, an electric tricycle is a three-wheel transport vehicle powered by a battery and driven by a motor for pulling goods or people: The middle beam and the head pipe are important components of a tricycle, and the middle beam and the head pipe are often collectively referred to as the head beam or the leading beam.

[0003] In the existing tricycle head beam, the middle beam is a whole piece, and then the head pipe is welded above the middle beam. The welding points between the head pipe and the middle beam are few and the welding force-bearing area is small. This leads to easy cracking of the weld between the middle beam and the head pipe when the vehicle is impacted, and the assembly structure stability of the tricycle middle beam head is general. For this reason, we propose a force-bearing structure of a tricycle middle beam head. Content of the Utility Model

[0004] The main purpose of the utility model is to provide a force-bearing structure of a tricycle middle beam head, which solves the problem of general assembly structure stability of the tricycle middle beam head by setting a group connection and positioning unit and a strengthening unit.

[0005] To solve the above technical problems, the utility model is realized through the following technical solutions: A force-bearing structure of a tricycle middle beam head includes a middle beam main body and a head pipe main body, and further includes: a group connection and positioning unit and a strengthening unit arranged between the middle beam main body and the head pipe main body. The middle beam main body is composed of two straight pipes, and the head pipe main body is composed of a connecting part and an inclined pipe part and a horizontal pipe part fixed on the connecting part;

[0006] The group connection and positioning unit includes a plug-in block and a stop block. One end of the inclined pipe part is placed between the two straight pipes. Plug-in grooves are formed on the top surface and the bottom surface of the end of the inclined pipe part. The plug-in block is fixedly arranged at the end of the straight pipe and extends into the plug-in groove movably. The inclined pipe part and the straight pipe are assembled and welded through the plug-in groove and the plug-in block. The stop block is fixedly arranged on the side wall of one end of the straight pipe. While the end of the horizontal pipe part is welded to the side surface of the straight pipe, one side surface of the end of the horizontal pipe part is welded to one side surface of the stop block;

[0007] The reinforcing unit includes a reinforcing strip, a connecting plate, and a locking screw. An insertion through groove is formed on the side surface of the end of the inclined pipe part between two straight pipes. One end of the reinforcing strip extends into the two straight pipes movably and penetrates the inclined pipe part through the insertion through groove. One end of the connecting plate is connected to the side surface of the reinforcing strip and is located outside the straight pipe. The other end of the connecting plate extends into the horizontal pipe part movably. A locking through hole is formed on the side surface of the connecting plate. The locking screw is threadedly assembled on the side surface of the end of the horizontal pipe part and penetrates the locking through hole movably.

[0008] Preferably, there are four plug-in blocks in total and they are equally divided into two groups. The two groups of plug-in blocks are symmetrically and fixedly arranged on the two straight pipes, and the plug-in grooves correspond to the plug-in blocks one by one.

[0009] Preferably, the locking screw is arranged parallel to the straight pipe.

[0010] Preferably, the horizontal pipe part is arranged perpendicular to the straight pipe.

[0011] Preferably, the connecting plate is arranged perpendicular to the reinforcing strip.

[0012] Compared with the prior art, the force-bearing structure of the middle beam head of a tricycle of the present utility model has the following beneficial effects:

[0013] 1. In the present utility model, by arranging the assembly positioning unit, the middle beam main body composed of two straight pipes can form a two-section structure. After the inclined pipe part on the main body of the head pipe is placed between the two straight pipes, the two groups of plug-in blocks at the ends of the two straight pipes can be inserted into the respective plug-in grooves on the top surface and the bottom surface of the end of the inclined pipe part one by one. The inclined pipe part and the two straight pipes are completed with positioning and assembly, and at the same time, the end of the horizontal pipe part can be pressed against the stopper on the side wall of the end of the straight pipe. The main body of the head pipe and the main body of the middle beam are completely assembled. The plug-in grooves and the plug-in blocks can cooperate with the inclined pipe part and the two straight pipes for subsequent multiple weldings, and the stopper also cooperates with the horizontal pipe part to increase the welding area with the straight pipe. The assembly of the main body of the head pipe and the main body of the middle beam is simple and the welding stability is high.

[0014] 2. In the present utility model, by arranging the reinforcing unit, before the main body of the head pipe and the main body of the middle beam are completely welded, one end of the reinforcing strip can extend into the two straight pipes movably and penetrate the inclined pipe part through the insertion through groove on the inclined pipe part. The two straight pipes and the inclined pipe part can be connected in series. The connecting plate arranged on the side surface of the reinforcing strip and located outside the straight pipe can be inserted into the horizontal pipe part. After the locking screw is assembled on the side surface of the end of the horizontal pipe part, the locking screw inserted into the horizontal pipe part can penetrate the locking through hole on the side surface of the connecting plate. The connecting plate and the reinforcing strip can be completely locked to the straight pipe and the main body of the head pipe. In addition to being welded together, the main body of the head pipe and the main body of the middle beam can be mutually assisted and limited. The stability of the connection and assembly of the main body of the head pipe and the main body of the middle beam is further improved and its working process is also guaranteed. Description of the Drawings

[0015] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the attached drawings required for the description of the embodiments. Obviously, the attached drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other attached drawings can also be obtained based on these drawings.

[0016] Figure 1 It is a schematic diagram of the overall structure of the force-bearing structure of the middle beam head of a tricycle of the present utility model;

[0017] Figure 2 It is a schematic top view structure diagram of the force-bearing structure of the middle beam head of a tricycle of the present utility model;

[0018] Figure 3 For the present utility model Figure 2 It is a schematic cross-sectional structure diagram at A-A of the present utility model;

[0019] Figure 4 For the present utility model Figure 3 It is a schematic cross-sectional structure diagram at B-B of the present utility model.

[0020] In the attached drawings, the list of components represented by each label is as follows:

[0021] 1. Middle beam main body; 101. Straight pipe;

[0022] 2. Group connection positioning unit; 201. Insertion groove; 202. Insertion block; 203. Stopper;

[0023] 3. Reinforcement unit; 301. Insertion through groove; 302. Reinforcement strip; 303. Connection plate; 304. Locking through hole; 305. Locking screw;

[0024] 4. Head pipe main body; 401. Connection part; 402. Inclined pipe part; 403. Horizontal pipe part. Specific embodiments

[0025] To make the technical means, creative features, achieved purposes and effects of the present utility model easy to understand, the following further elaborates the present utility model in combination with specific embodiments.

[0026] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0027] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. Embodiment

[0028] As Figure 1 、 Figure 2 And Figure 3 As shown in

[0029] A force-bearing structure of the middle beam head of a tricycle includes a middle beam main body 1 and a head pipe main body 4, and further includes: an assembly positioning unit 2 and a strengthening unit 3 arranged between the middle beam main body 1 and the head pipe main body 4. The middle beam main body 1 is composed of two straight pipes 101, and the head pipe main body 4 is composed of a connecting portion 401 and an inclined pipe portion 402 and a horizontal pipe portion 403 fixed on the connecting portion 401;

[0030] The strengthening unit 3 includes a strengthening strip 302, a connecting plate 303, and a locking screw 305. An insertion through groove 301 is formed on the end side of the inclined pipe part 402 located between the two straight pipes 101. One end of the strengthening strip 302 extends into the two straight pipes 101 movably and penetrates through the inclined pipe part 402 through the insertion through groove 301. One end of the connecting plate 303 is connected to the side of the strengthening strip 302 and is located outside the straight pipe 101. The other end of the connecting plate 303 extends into the horizontal pipe part 403 movably. A locking through hole 304 is formed on the side of the connecting plate 303. The locking screw 305 is threadedly assembled on the end side of the horizontal pipe part 403 and penetrates through the locking through hole 304 movably.

[0031] Further, there are four insertion blocks 202 in total and they are equally divided into two groups. The two groups of insertion blocks 202 are symmetrically and fixedly arranged on the two straight pipes 101, and the insertion grooves 201 correspond to the insertion blocks 202 one by one.

[0032] Further, the horizontal pipe part 403 and the straight pipe 101 are arranged perpendicular to each other.

[0033] The connection and positioning unit 2 enables the head pipe main body 4 and the middle beam main body 1 to be connected simply and has high welding stability. Embodiment

[0034] As Figure 1 、 Figure 2 And Figure 4 As shown in, a force-bearing structure of the middle beam head of a tricycle includes a middle beam main body 1 and a head pipe main body 4, and further includes: a connection and positioning unit 2 and a strengthening unit 3 arranged between the middle beam main body 1 and the head pipe main body 4. The middle beam main body 1 is composed of two straight pipes 101, and the head pipe main body 4 is composed of a connection part 401 and an inclined pipe part 402 and a horizontal pipe part 403 fixed on the connection part 401;

[0035] The connection and positioning unit 2 includes an insertion block 202 and a stop block 203. One end of the inclined pipe part 402 is placed between the two straight pipes 101. Insertion grooves 201 are formed on both the top surface and the bottom surface of the end of the inclined pipe part 402. The insertion block 202 is fixedly arranged at the end of the straight pipe 101, and the insertion block 202 extends into the insertion groove 201 movably. The inclined pipe part 402 and the straight pipe 101 are assembled and welded through the insertion groove 201 and the insertion block 202. The stop block 203 is fixedly arranged on the side wall of the end of one of the straight pipes 101. While the end of the horizontal pipe part 403 is welded to the side of the straight pipe 101, one side surface of the end of the horizontal pipe part 403 is welded to one side surface of the stop block 203;

[0036] The reinforcing unit 3 includes a reinforcing strip 302, a connecting plate 303, and a locking screw 305. An insertion through groove 301 is formed on the end side of the inclined pipe portion 402 located between the two straight pipes 101. One end of the reinforcing strip 302 extends movably into the two straight pipes 101 and penetrates through the inclined pipe portion 402 through the insertion through groove 301. One end of the connecting plate 303 is connected to the side of the reinforcing strip 302 and is located outside the straight pipe 101. The other end of the connecting plate 303 extends movably into the horizontal pipe portion 403. A locking through hole 304 is formed on the side of the connecting plate 303. The locking screw 305 is threadedly assembled on the end side of the horizontal pipe portion 403 and movably penetrates through the locking through hole 304.

[0037] Further, the locking screw 305 is arranged parallel to the straight pipe 101.

[0038] Further, the connecting plate 303 is arranged perpendicular to the reinforcing strip 302.

[0039] Through the reinforcing unit 3, the stability of the connection and assembly of the horsehead pipe main body 4 and the middle beam main body 1 is further improved, and its working process is also guaranteed.

[0040] The working principle of the present invention is as follows:

[0041] One end of the reinforcing strip 302 extends movably into the two straight pipes 101 and penetrates through the inclined pipe portion 402 through the insertion through groove 301 on the inclined pipe portion 402. The two straight pipes 101 and the inclined pipe portion 402 are connected in series. The connecting plate 303 arranged on the side of the reinforcing strip 302 and located outside the straight pipe 101 is inserted into the horizontal pipe portion 403. After the locking screw 305 is assembled on the end side of the horizontal pipe portion 403, the locking screw 305 inserted into the horizontal pipe portion 403 penetrates through the locking through hole 304 on the side of the connecting plate 303, and the connecting plate 303 and the reinforcing strip 302 are completely locked to the straight pipe 101 and the horsehead pipe main body 4. The horsehead pipe main body 4 and the middle beam main body 1 are mutually assisted and limited in position in addition to being welded together. The middle beam main body 1 composed of the two straight pipes 101 forms a two-section structure. After the inclined pipe portion 402 on the horsehead pipe main body 4 is placed between the two straight pipes 101, the two groups of insertion blocks 202 at the ends of the two straight pipes 101 are respectively inserted into the respective insertion grooves 201 on the top surface and the bottom surface of the end of the inclined pipe portion 402. The inclined pipe portion 402 and the two straight pipes 101 are completed in positioning and assembly, and the end of the horizontal pipe portion 403 abuts against the stop block 203 on the side wall of the end of the straight pipe 101 at the same time. The horsehead pipe main body 4 and the middle beam main body 1 are completely assembled. The insertion grooves 201 and the insertion blocks 202 cooperate with the inclined pipe portion 402 and the two straight pipes 101 for subsequent multiple weldings, and the stop block 203 also cooperates with the horizontal pipe portion 403 to increase the welding area with the straight pipe 101.

[0042] The foregoing has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above-mentioned embodiments, and what is described in the above-mentioned embodiments and the specification only illustrates the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and all these changes and improvements fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A horse head force bearing structure for a three-wheeled vehicle center beam, comprising a center beam body (1) and a horse head pipe body (4), characterized in that: Also includes: An assembly positioning unit (2) and a reinforcement unit (3) are arranged between a center beam body (1) and a horse head pipe body (4), wherein the center beam body (1) is composed of two straight pipes (101), and the horse head pipe body (4) is composed of a connecting portion (401) and an oblique pipe portion (402) and a transverse pipe portion (403) fixed to the connecting portion (401); The assembly and positioning unit (2) comprises a plug-in block (202) and a stopper (203); one end of the oblique tube portion (402) is placed between two sections of straight tubes (101); a plug-in groove (201) is provided on the top surface and the bottom surface of the end of the oblique tube portion (402); the plug-in block (202) is fixedly arranged at the end of the straight tube (101), and the plug-in block (202) movably extends into the plug-in groove (201); the oblique tube portion (402) and the straight tube (101) are assembled and welded via the plug-in groove (201) and the plug-in block (202); the stopper (203) is fixedly arranged on the side wall of the end of one of the straight tubes (101); and while the end of the transverse tube portion (403) is welded to the side of the straight tube (101), one side surface of the end of the transverse tube portion (403) is welded to one side surface of the stopper (203); The reinforcing unit (3) comprises a reinforcing strip (302), a connecting plate (303) and a locking screw (305); a plug-in slot (301) is provided on the side surface of the end of the oblique tube portion (402) located between the two straight tube sections (101); one end of the reinforcing strip (302) movably extends into the interior of the two straight tubes (101) and penetrates the oblique tube portion (402) through the plug-in slot (301); one end of the connecting plate (303) is connected to the side surface of the reinforcing strip (302) and is located outside the straight tube (101); the other end of the connecting plate (303) movably extends into the transverse tube portion (403); a locking through hole (304) is provided on the side surface of the connecting plate (303); and the locking screw (305) is threadedly mounted on the side surface of the end of the transverse tube portion (403) and movably penetrates the locking through hole (304).

2. A three-wheeled vehicle center beam horse head force bearing structure according to claim 1, characterized in that: The plug-in blocks (202) are provided with four in total and are equally divided into two groups. The two groups of plug-in blocks (202) are symmetrically fixedly arranged on the two straight tubes (101), and the plug-in grooves (201) and the plug-in blocks (202) are arranged in a one-to-one correspondence.

3. A three-wheeled vehicle center beam horse head force bearing structure according to claim 1, characterized in that: The locking screw (305) and the straight tube (101) are arranged parallel to each other.

4. A three-wheel vehicle center beam horse head force bearing structure according to claim 1, characterized in that: The transverse tube portion (403) and the straight tube (101) are arranged perpendicular to each other.

5. The horse head stress bearing structure of the middle beam of a tricycle according to claim 1, characterized in that: The connecting plate (303) and the reinforcing strip plate (302) are arranged perpendicular to each other.

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