Portable connecting device mounted on commercial vehicle

Abstract

The utility model discloses a portable connecting device for commercial vehicle loading, which comprises two upper connecting seats and a lower connecting base plate, and the two upper connecting seats are respectively arranged at the left side end and the right side end of a loading structure in advance; the lower connecting base plate abuts against the bottom end face of the chassis longitudinal beam, the left end and the right end of the lower connecting base plate exceed the bottom end face of the chassis longitudinal beam and correspond to the upper connecting bases respectively, a connecting screw is connected between each upper connecting base and the lower connecting base plate, the connecting screws penetrate through the outer end faces of the upper connecting bases, and the heads of the screws are connected to the upper connecting bases in a clamped mode. And the bottom of the connecting screw rod is fixed on the lower connecting base plate through a locking nut. According to the operation mode of the device, the requirement for an operation space is small, the installation position can be fixed according to needs, the inclusiveness of the installation space is high, influences of other factors are avoided, the device is friendly to an upper installation structure, U-shaped bolt installation gaps do not need to be reserved, and the overall gravity center can be lowered; the device also has the advantages of simple structure, stable connection, high practicability and the like.

Description

Technical Field

[0001] The utility model relates to a commercial vehicle upper mounting connection device, in particular to a portable commercial vehicle upper mounting connection device. Background Art

[0002] At present, when commercial vehicle superstructure is connected to the chassis, a pad + U-shaped bolt structure is usually used to lock the superstructure to the upper wing surface of the chassis longitudinal beam. The installation method is shown in Fig.10 As shown, the top of the U-shaped bolt crosses through the upper structure, and the two legs are fixed to the chassis longitudinal beam through the pad and the locking nut. However, this type of U-shaped bolt is affected by its own size, and the space limitation during installation is large, and the installation position selection is limited. During installation, there must be enough space height to ensure that the U-shaped bolt passes through. If there are other structures in the corresponding area above the upper structure connection, there is no space or insufficient space, which makes the U-shaped bolt unusable. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a portable connecting device for commercial vehicle upper body which has reasonable design, an installation position not affected by other spaces and is convenient for disassembly and assembly of upper body structure.

[0004] In order to solve the above technical problems, the technical solution of the utility model is: a portable connecting device for commercial vehicle upper body, comprising an upper connecting seat and a lower connecting pad, wherein the upper connecting seat is provided with two and is pre-installed on the left and right side ends of the upper structure respectively, and the lower connecting pad is provided with one, which is against the bottom end surface of the chassis longitudinal beam and the left and right ends extend beyond the bottom end surface of the chassis longitudinal beam and correspond to the upper connecting seat respectively, and a connecting screw is connected between each of the upper connecting seats and the lower connecting pad respectively, the connecting screw is penetrated by the outer end surface of the upper connecting seat, and the screw head is clamped on the upper connecting seat, and the bottom of the connecting screw is fixed to the lower connecting pad by a locking nut.

[0005] As a preferred technical solution, the surface of the upper connecting seat is provided with a screw connecting hole matching the outer diameter of the connecting screw, and the outer end surface of the upper connecting seat is provided with a through-rod channel corresponding to the screw connecting hole, and the width of the through-rod channel is smaller than the outer diameter of the screw connecting hole.

[0006] As a preferred technical solution, the connecting screw is provided with a screw head, a screw positioning section, a screw narrow section, and a screw fixing section from top to bottom, the screw positioning section is adapted to the screw connecting hole, the outer diameter of the screw positioning section is larger than the width of the through-rod channel, the screw narrow section is adapted to the through-rod channel and can pass through the through-rod channel into the screw connecting hole, and the screw fixing section is used for threaded connection with the locking nut.

[0007] As a preferred technical solution, the outer surface of the narrow section of the screw rod is provided with a planar groove for passing through the rod penetration channel.

[0008] As a preferred technical solution, the planar grooves are arranged on the left and right sides of the connecting screw, and the width between the planar grooves is not greater than the width of the rod-penetrating channel.

[0009] As a preferred technical solution, the upper connecting seat includes a planar connecting section, the connecting screw is connected to the planar connecting section, and the front and rear side ends of the planar connecting section are bent downward to provide inclined reinforcement sections.

[0010] As a preferred technical solution, the upper connecting seats on the left and right sides are arranged symmetrically with respect to the upper structure.

[0011] Due to the adoption of the above technical scheme, the beneficial effects of the utility model are as follows: the screw structure of the utility model is a left and right split structure, and the screw is directly installed from the side of the upper structure. The installation is convenient and efficient, and there is no need to cross across like the U-shaped bolts in the prior art. This operation method requires less operating space, the installation position can be fixed as needed, the installation space is highly inclusive, not affected by other factors, is friendly to the upper structure, and does not require a reserved U-shaped bolt installation gap, which is conducive to lowering the overall center of gravity. The device also has the advantages of simple structure, stable connection, and strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The following drawings are only intended to illustrate and explain the present invention, and are not intended to limit the scope of the present invention.

[0013] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0014] Figure 2 It is a structural split diagram of an embodiment of the utility model;

[0015] Figure 3 It is a top view of an embodiment of the utility model;

[0016] Figure 4 yes Figure 3 Sectional view at AA in the middle;

[0017] Figure 5 yes Figure 3 Sectional view at the middle BB;

[0018] Figure 6 It is a structural schematic diagram of the connecting seat in the embodiment of the utility model;

[0019] Figure 7 It is a schematic diagram of the cooperation between the narrow section of the screw and the rod-penetrating channel in the embodiment of the utility model;

[0020] Figure 8 It is a schematic diagram of the cooperation between the screw positioning section and the screw connecting hole in the embodiment of the utility model;

[0021] Fig. 9 This is an installation effect diagram of an embodiment of the utility model;

[0022] Fig.10 It is an installation effect diagram of a U-bolt in the background technology;

[0023] In the figure: 10-upper connecting seat; 11-screw connecting hole; 12-rod through-rod channel; 13-plane connecting section; 14-inclined reinforcement section; 20-lower connecting pad; 30-connecting screw; 31-screw head; 32-screw positioning section; 33-screw narrow section; 33a-plane groove; 34-screw fixing section; 40-locking nut; 50-upper structure; 60-chassis longitudinal beam. DETAILED DESCRIPTION

[0024] The present invention is further described below in conjunction with the accompanying drawings and examples. In the following detailed description, only certain exemplary embodiments of the present invention are described by way of illustration. Needless to say, those skilled in the art will recognize that the described embodiments may be modified in various ways without departing from the spirit and scope of the present invention. Therefore, the drawings and descriptions are illustrative in nature and are not intended to limit the scope of protection of the claims.

[0025] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention 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 cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] like Figures 1 to 5As shown, a portable connection device for commercial vehicle upper body includes an upper connection seat 10 and a lower connection pad 20, wherein the upper connection seat 10 is provided with two and is pre-installed on the left and right side ends of the upper structure 50, respectively. In this embodiment, the upper connection seats 10 on the left and right sides are symmetrically arranged about the upper structure 50, and the lower connection pad 20 is provided with one, which abuts against the bottom end surface of the chassis longitudinal beam 60 and the left and right ends exceed the bottom end surface of the chassis longitudinal beam 60 and correspond to the upper connection seat 10 respectively, and a connecting screw 30 is connected between each of the upper connection seats 10 and the lower connection pad 20 respectively, and the connecting screw 30 is penetrated by the outer end surface of the upper connection seat 10, and the screw head is clamped on the upper connection seat 10, and the bottom of the connecting screw 30 is fixed to the lower connection pad 20 by a locking nut 40.

[0028] See also Figure 6 The surface of the upper connection seat 10 is provided with a screw connection hole 11 that matches the outer diameter of the connection screw 30, and the outer end surface of the upper connection seat 10 is provided with a rod penetration channel 12 that corresponds to the screw connection hole 11, and the width of the rod penetration channel 12 is smaller than the outer diameter of the screw connection hole 11. The screw connection hole 11 and the rod penetration channel 12 cooperate to form a key-shaped hole, and the rod penetration channel 12 is used on the outside to ensure that the connection screw 30 can enter from the outer end surface of the upper connection seat 10, and can also prevent the connection screw 30 from slipping off at will.

[0029] See also Figure 4 , Figure 5 , Figure 7 and Figure 8 The connecting screw 30 is provided with a screw head 31, a screw positioning section 32, a screw narrow section 33, and a screw fixing section 34 from top to bottom. The screw positioning section 32 is adapted to the screw connecting hole 11. The outer diameter of the screw positioning section 32 is greater than the width of the rod penetration channel 12. The matching relationship between the screw positioning section 32 and the screw connecting hole 11 is shown in Figure 8 The narrow section 33 of the screw rod is adapted to the through-rod channel 12 and can pass through the through-rod channel 12 to enter the screw connecting hole 11. The matching relationship between the narrow section 33 of the screw rod and the through-rod channel 12 is shown in Figure 7 The screw fixing section 34 is used for threading with the locking nut 40. The length of the screw positioning section is 50 mm.

[0030] See also Figure 4 The outer surface of the narrow section 33 of the screw is provided with a planar groove 33a for passing through the rod-penetrating channel 12 . The planar groove 33a is provided on the left and right sides of the connecting screw 30 . The width between the planar grooves 33a is not greater than the width of the rod-penetrating channel 12 .

[0031] See also Figure 5 The upper connecting seat 10 includes a planar connecting section 13, and the connecting screw 30 is connected to the planar connecting section 13. The front and rear side ends of the planar connecting section 13 are bent downward to provide an inclined reinforcement section 14, and the inclined reinforcement section 14 is used to improve the strength of the upper connecting seat 10.

[0032] The working principle of this embodiment is:

[0033] See also Fig. 9 Before the upper structure 50 is connected to the chassis longitudinal beam 60, firstly, the left and right sides of the upper structure 50 (with Fig. 9 ) are pre-welded with an upper connecting seat 10 respectively; when connecting, after the upper structure 50 falls to the chassis, the connecting screw 30 is passed through the outer end surface of the upper connecting seat 10, the screw head 31 is clamped on the upper connecting seat 10, the bottom is loaded with the lower connecting pad 20, and then the locking nut 40 is locked to complete the connection between the upper structure 50 and the chassis longitudinal beam 60;

[0034] The method for clamping the connecting screw 30 and the upper connecting seat 10 is as follows: first, align the narrow section 33 of the screw and pass it through the rod passage 12 to enter the screw connecting hole 11, and then move the connecting screw 30 downward so that the screw positioning section 32 contacts the screw connecting hole 11 accordingly until the screw head 31 is clamped at the screw connecting hole 11.

[0035] The screw structure of the utility model is a left and right split structure. The screw can be installed directly from the side of the upper structure 50 through the rod penetration channel 12. The installation is convenient and efficient. It does not need to be passed across like the U-shaped bolts in the prior art. This operation method requires less operating space, the installation position can be fixed as needed, the installation space is highly inclusive, and is not affected by other factors. It is friendly to the upper structure 50 and does not require a reserved U-shaped bolt installation gap, which is beneficial to lowering the overall center of gravity.

[0036] At the same time, through the combined design of structures such as the through-rod channel 12, the screw connecting hole 11, the screw narrow section 33, and the screw positioning section 32, while ensuring the need for convenient installation, the installation is more stable. The characteristic that the outer diameter of the screw positioning section 32 is larger than the width of the through-rod channel 12 can ensure that the screw positioning section 32 is stuck and will not slide out from the side end surface of the upper connecting seat 10, and the installation stability is better.

[0037] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A portable connection device for commercial vehicle, characterized in that: It includes an upper connecting seat and a lower connecting pad, wherein two upper connecting seats are provided and are pre-installed on the left and right side ends of the upper structure respectively, and one lower connecting pad is provided, which abuts against the bottom end surface of the chassis longitudinal beam and the left and right ends extend beyond the bottom end surface of the chassis longitudinal beam and correspond to the upper connecting seat respectively, and a connecting screw is connected between each of the upper connecting seats and the lower connecting pad respectively, the connecting screw is penetrated by the outer end surface of the upper connecting seat, and the screw head is clamped on the upper connecting seat, and the bottom of the connecting screw is fixed to the lower connecting pad by a locking nut.

2. A portable connection device for commercial vehicle as claimed in claim 1, characterized in that: The surface of the upper connecting seat is provided with a screw connecting hole matching the outer diameter of the connecting screw, and the outer end surface of the upper connecting seat is provided with a rod through-hole corresponding to the screw connecting hole, and the width of the rod through-hole is smaller than the outer diameter of the screw connecting hole.

3. A portable connection device for commercial vehicle as claimed in claim 2, characterized in that: The connecting screw is provided with a screw head, a screw positioning section, a screw narrow section, and a screw fixing section in sequence from top to bottom. The screw positioning section is adapted to the screw connecting hole. The outer diameter of the screw positioning section is larger than the width of the through-rod channel. The narrow screw section is adapted to the through-rod channel and can pass through the through-rod channel into the screw connecting hole. The screw fixing section is used for threaded connection with the locking nut.

4. A portable connection device for commercial vehicle as claimed in claim 3, characterized in that: The outer surface of the narrow section of the screw rod is provided with a plane groove for passing through the rod penetration channel.

5. A portable connection device for commercial vehicle as claimed in claim 4, characterized in that: The planar grooves are arranged on the left and right sides of the connecting screw rod, and the width between the planar grooves is not greater than the width of the rod penetration channel.

6. A portable connection device for commercial vehicle as claimed in claim 2, characterized in that: The upper connecting seat comprises a planar connecting section, the connecting screw is connected to the planar connecting section, and the front and rear side ends of the planar connecting section are bent downward to be provided with inclined reinforcement sections.

7. A portable connection device for commercial vehicle as claimed in claim 1, characterized in that: The upper connecting seats on the left and right sides are symmetrically arranged with respect to the upper structure.

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