CN113982387B

CN113982387B - Upper hood lock

Info

Publication number: CN113982387B
Application number: CN202111406418.9A
Authority: CN
Inventors: 佟泽锋; 蒙小行; 丁兆祥; 刘朋; 胡卫东; 刘虹
Original assignee: LOVOL Engineering Machinery Group Co Ltd
Current assignee: Lovol Heavy Industry Group Co ltd
Priority date: 2021-11-24
Filing date: 2021-11-24
Publication date: 2023-11-10
Anticipated expiration: 2041-11-24
Also published as: CN113982387A

Abstract

The application relates to an upper hood lock which comprises a movable part and a fixed part, wherein the movable part comprises a bottom plate, a handle is hinged on the bottom plate, a pull rod is hinged on the handle, a nut is slidably arranged on the pull rod, a hanging ring or a hanging hook for connecting the fixed part is arranged at the lower end of the pull rod, a screw is arranged on the hanging ring or the hanging hook, the screw is in threaded connection with the nut on the pull rod, a lock head pipe is arranged on the handle, a tongue lock is arranged in the lock head pipe, the tongue lock comprises a lock cylinder rotatably arranged in the lock head pipe, a lock tongue is arranged on the lock cylinder, the lock tongue extends out of the lock head pipe, a limit baffle for matching the lock tongue is arranged on the bottom plate, a limit groove is arranged on the side part of the lock cylinder and surrounds the rotation axis of the lock cylinder, a jack is formed in the lock head pipe, the jack penetrates the lock head pipe, the limit rod is inserted in the jack, and the limit rod extends into the limit groove. The upper hood lock can avoid shaking and abnormal sound of the upper hood caused by bumping of the car body, can prevent the lock core from falling off, and prolongs the service life of the lock core.

Description

Upper hood lock

Technical Field

The application relates to the field of engineering machinery, in particular to an upper hood lock.

Background

At present, the excavator is increasingly popular in mining, real estate, capital construction, rural construction and other fields at home and abroad, and along with the improvement of product reliability, people have higher requirements on the safety performance of the excavator. When the excavator is routinely refueled, maintained and serviced, the engine of the excavator is required to be directly operated, the upper hood is installed on the middle-sized excavator and the large-sized excavator at present, the upper hood is hinged to the upper portion of the engine, and the upper hood is buckled on the upper side of the engine when the upper hood falls down, so that the engine is protected, and sundries generated in the working process of the excavator are prevented from entering a working area of the engine.

The upper hood lock comprises two parts, one part is a movable part arranged on the upper hood, the other part is a fixed part arranged on the vehicle body, the movable part and the fixed part are respectively provided with a hanging ring and a hanging hook, and when the upper hood lock is arranged, the hanging rings and the hanging hooks can also exchange the installation positions. When the upper hood is closed, the hanging ring is sleeved on the hook, and then the movable part is operated to lock the hanging ring and the hook, so that the upper hood is fixed,

the locking force of the existing upper hood lock cannot be adjusted, the upper hood shakes along with the jolt of a vehicle body in the running process of the vehicle, and the movable part and the fixed part are continuously pulled in the process, so that the failure rate of the upper hood lock is increased, and the upper hood lock needs to be improved.

Disclosure of Invention

The application aims to provide an upper hood lock capable of adjusting the locking force of the upper hood lock.

The application discloses an upper hood lock for achieving the purpose, which comprises a movable part and a fixed part, and is structurally characterized in that: the movable part comprises a bottom plate, a handle is hinged on the bottom plate, a pull rod is hinged on the handle, a nut is slidably arranged on the pull rod, a hanging ring or a hanging hook for connecting the fixed part is arranged at the lower end of the pull rod, a screw is arranged on the hanging ring or the hanging hook, and the screw is in threaded connection with the nut on the pull rod.

After adopting above-mentioned structure, rotate the screw rod and make it take place screw-thread fit with the nut, can adjust the length that the screw rod outwards stretches out from the pull rod to adjust the locking force of upper cover lock.

Regarding the concrete structure of the pull rod, the pull rod comprises two left and right spaced side plates, a connecting plate for fixedly connecting the two side plates is arranged between the two side plates, a guide plate is fixedly arranged at the lower parts of the two side plates, a guide hole is formed in the guide plate, and a screw rod penetrates through the guide hole and stretches into the space between the two side plates. The screw is in sliding fit with the guide hole and is rotatable in the guide hole.

Preferably, the sliding grooves are formed in the two side plates, the sliding grooves extend along the length direction of the side plates, the sliding grooves on the two side plates correspond left and right, a supporting seat is arranged between the two side plates, sliding blocks are arranged on the left side and the right side of the supporting seat, the two sliding blocks respectively extend into the sliding grooves of the two side plates, the sliding blocks are in sliding fit with the sliding grooves, and the nuts are arranged on the sliding blocks. When the screw rod is rotated, the supporting seat slides along the sliding groove, and when the supporting seat slides to the limit position, the screw rod is continuously rotated, and the screw rod starts to stretch out or shrink into the pull rod.

In order to further regulate the pretightening force of the lockset, a spring is arranged between the supporting seat and the guide plate, two ends of the spring respectively lean against the supporting seat and the guide plate, the spring is sleeved outside the screw rod, and the screw rod sequentially passes through the guide plate and the supporting seat and is connected with the nut. The spring makes the screw rod possess certain tensioning dynamics, and when locking the aircraft bonnet, can avoid the aircraft bonnet to rock and abnormal sound because of the automobile body jolts and causes.

In order to ensure the safety of the engine below the upper hood, a lock head pipe is arranged on the handle, a turning tongue lock is arranged in the lock head pipe, the turning tongue lock comprises a lock cylinder rotatably arranged in the lock head pipe, a lock tongue is arranged on the lock cylinder, the lock tongue extends out of the lock head pipe, and a limit baffle for matching the lock tongue is arranged on the bottom plate. When the upper hood is locked, the lock core is turned by using the key, the lock tongue at the rear part of the lock core is clamped at the rear part of the limit baffle, and the upper hood lock cannot be unlocked under the condition that the key is not used, so that the non-staff is prevented from randomly operating parts such as an engine.

Preferably, the lateral part of lock core is equipped with the spacing groove, and the spacing groove encircles the axis of rotation of lock core and sets up, has seted up the jack on the tapered end pipe, and the jack runs through the tapered end pipe, inserts in the jack and has the gag lever post, and the gag lever post stretches into in the spacing groove. The prior lock core structure lock tongue is riveted or screwed on the lock core, and after the lock body is closed, the lock tongue can pull the lock core riveting or screwed point due to vibration or external force, so that the subsequent lock core is damaged and falls off. According to the scheme, the limiting groove is reserved on the lock cylinder, limiting is carried out on the limiting groove through the limiting rod, so that the tail end of the lock cylinder and the lock tongue do not need to be riveted, external force of the lock tongue cannot be transmitted to the lock cylinder, the lock cylinder is prevented from falling off, and the service life of the lock cylinder is prolonged.

Regarding the concrete structure of the limit baffle, the limit baffle is positioned above the hinging seat, the limit baffle bulges towards the front side, a through hole for accommodating the lock head pipe is formed in the limit baffle, an avoidance hole is formed in the limit baffle, the avoidance hole is connected with the through hole, and the size of the avoidance hole is not less than that of the lock tongue. When the hood lock is locked, the hanging ring is sleeved on the hook, then the rear end of the lock head pipe is pushed into the through hole, in the process, the lock tongue passes through the avoidance hole, then the lock core is rotated by using the key, the lock tongue rotates along with the lock core, and the lock tongue reaches the rear of the limit baffle, and the limit baffle limits the lock tongue at the moment, so that the hood lock cannot be opened under the condition that the key is not used.

Regarding the hinge structure of the handle and the bottom plate, the bottom plate is provided with a hinge seat, and the handle is provided with a rotating shaft which is in rotating fit with the hinge seat.

Preferably, the lock cylinder is positioned at the middle part of the handle, the rotating shaft is positioned at the lower end of the handle, and the hinge point of the pull rod and the handle is positioned at the part between the lock cylinder and the rotating shaft. This arrangement facilitates the handling of the handle.

Preferably, the fixing part comprises a mounting plate, the hook is mounted on the mounting plate, and the hanging ring is mounted at the lower end of the screw rod.

In summary, the beneficial effects of the application are as follows: the screw, the nut and the spring are matched to conveniently adjust the pretightening force between the hook and the hanging ring, so that the upper hood can be prevented from shaking and abnormal sound caused by bumping of the car body when the upper hood is locked; the lock core is reserved with the limit groove, and the limit groove is limited by the limit rod, so that the tail end of the lock core and the lock tongue do not need to be riveted, the external force of the lock tongue cannot be transmitted to the lock core, the lock core is prevented from falling off, and the service life of the lock core can be prolonged.

Drawings

FIG. 1 is a schematic view of an exploded construction of a lock cylinder portion of an upper bonnet lock;

FIG. 2 is a schematic view of the structure of the portion at the point A in FIG. 1;

FIG. 3 is a schematic view of the structure of the upper housing in an opened state;

FIG. 4 is a schematic view of the structure of the upper housing in a locked state;

fig. 5 is a schematic rear view of the upper housing.

In the figure: the lock comprises a bottom plate 1, a mounting plate 2, a handle 3, a hinging seat 4, a pull rod 5, a hanging ring 6, a hanging hook 7, a lock cylinder tube 8, a limit baffle 9, a screw 10, a spring 11, a supporting seat 12, a lock tongue 13, a sliding chute 14, a limit rod 15, a lock cylinder 16, a limit groove 17, a nut 18, a side plate 19, a connecting plate 20, a guide plate 21, a sliding block 22, an inserting hole 23, a through hole 24, an avoiding hole 25 and a rotating shaft 26.

Detailed Description

The following describes in further detail the embodiments of the present application with reference to the drawings and examples. The following examples are illustrative of the application and are not intended to limit the scope of the application.

In the description of the present application, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.

The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.

The following is a description of preferred embodiments of the application, taken in conjunction with the accompanying drawings.

The upper hood lock comprises a movable part and a fixed part, wherein the movable part comprises a bottom plate 1, a handle 3 is hinged on the bottom plate 1, a pull rod 5 is hinged on the handle 3, a nut 18 is slidably mounted on the pull rod 5, a hanging ring 6 or a hanging hook 7 for connecting the fixed part is arranged at the lower end of the pull rod 5, a screw rod 10 is arranged on the hanging ring 6 or the hanging hook 7, and the screw rod 10 is in threaded connection with the nut 18 on the pull rod 5.

Referring to fig. 1, the screw 10 is rotated into threaded engagement with the nut 18 to adjust the length of the screw 10 extending outwardly from the pull rod 5 and thereby adjust the locking force of the upper bonnet lock.

Referring to fig. 1 and 3, regarding the specific structure of the pull rod 5, the pull rod 5 includes two side plates 19 spaced left and right, a connecting plate 20 fixedly connecting the two side plates 19 is provided between the two side plates 19, a guide plate 21 is fixedly mounted at the lower parts of the two side plates 19, a guide hole is provided on the guide plate 21, and a screw 10 passes through the guide hole and extends into the space between the two side plates 19. The screw 10 is slidably fitted in the guide hole, and the screw 10 is rotatable in the guide hole. The two side plates 19 are provided with the sliding grooves 14, the sliding grooves 14 extend along the length direction of the side plates 19, the sliding grooves 14 on the two side plates 19 correspond to each other in the left-right direction, a supporting seat 12 is arranged between the two side plates 19, the left side and the right side of the supporting seat 12 are provided with sliding blocks 22, the two sliding blocks 22 respectively extend into the sliding grooves 14 of the two side plates 19, the sliding blocks 22 are in sliding fit with the sliding grooves 14, and the nuts 18 are arranged on the sliding blocks 22. When the screw 10 is rotated, the supporting seat 12 slides along the sliding groove 14, and when the supporting seat 12 slides to the limit position, the screw 10 continues to rotate, and the screw 10 starts to extend or retract into the pull rod 5.

Referring to fig. 5, in order to further regulate the pretightening force of the lock, a spring 11 is installed between the supporting seat 12 and the guide plate 21, two ends of the spring 11 respectively lean against the supporting seat 12 and the guide plate 21, the spring 11 is sleeved outside the screw 10, and the screw 10 sequentially passes through the guide plate 21 and the supporting seat 12 and then is connected with the nut 18. The spring 11 makes the screw rod 10 possess certain tensioning dynamics, and when locking the upper hood, can avoid upper hood rocking and abnormal sound because of the automobile body jolts.

Referring to fig. 1 and 2, in order to ensure the safety of an engine below an upper hood, a lock head pipe 8 is arranged on a handle 3, a turning tongue lock is arranged in the lock head pipe 8, the turning tongue lock comprises a lock cylinder 16 rotatably arranged in the lock head pipe 8, a lock tongue 13 is arranged on the lock cylinder 16, the lock tongue 13 extends out of the lock head pipe 8, and a limit baffle 9 for matching with the lock tongue 13 is arranged on a bottom plate 1. When the upper hood is locked, the lock cylinder 16 is turned by using a key, the lock tongue 13 at the rear part of the lock cylinder 16 is clamped at the rear part of the limit baffle 9, and the upper hood lock cannot be unlocked under the condition that the key is not used, so that the non-staff is prevented from randomly operating parts such as engine and the like.

Referring to fig. 2, a limit groove 17 is formed in the side portion of the lock cylinder 16, the limit groove 17 is arranged around the rotation axis of the lock cylinder 16, a jack 23 is formed in the lock cylinder tube 8, the jack 23 penetrates through the lock cylinder tube 8, a limit rod 15 is inserted into the jack 23, and the limit rod 15 extends into the limit groove 17. The prior lock core 16 is characterized in that the lock tongue 13 is riveted or screwed on the lock core 16, and after the lock body is closed, the lock tongue 13 pulls the lock core 16 to rivet or screw the joint due to vibration or external force, so that the subsequent lock core 16 is damaged and falls off. According to the scheme, the limiting groove 17 is reserved on the lock cylinder 16, limiting is carried out on the limiting groove 17 through the limiting rod 15, so that the tail end of the lock cylinder 16 and the lock tongue 13 do not need to be riveted, external force of the lock tongue 13 cannot be transmitted to the lock cylinder 16, the lock cylinder 16 is prevented from falling off, and the service life of the lock cylinder 16 is prolonged.

Referring to fig. 4, regarding the specific structure of the limit baffle 9, the limit baffle 9 is located above the hinge seat 4, the limit baffle 9 bulges towards the front side, a through hole 24 for accommodating the lock cylinder 8 is formed in the limit baffle 9, an avoidance hole 25 is formed in the limit baffle 9, the avoidance hole 25 is connected with the through hole 24, and the size of the avoidance hole 25 is not smaller than that of the lock tongue 13. When the hood lock is locked, the hanging ring 6 is sleeved on the hook 7, then the rear end of the lock head pipe 8 is pushed into the through hole 24, in the process, the lock tongue 13 passes through the avoiding hole 25, then the lock cylinder 16 is rotated by using a key, the lock tongue 13 rotates along with the lock cylinder 16, the lock tongue 16 reaches the rear of the limit baffle 9, and at the moment, the limit baffle 9 limits the lock tongue 13, so that the hood lock cannot be unlocked under the condition of not using the key.

Referring to fig. 3, regarding the hinge structure of the handle 3 and the base plate 1, the base plate 1 is provided with a hinge seat 4, and the handle 3 is provided with a rotating shaft 26 rotatably matched with the hinge seat 4. The lock cylinder 8 is positioned at the middle part of the handle 3, the rotating shaft 26 is positioned at the lower end of the handle 3, and the hinge point of the pull rod 5 and the handle 3 is positioned at the part between the lock cylinder 8 and the rotating shaft 26. This arrangement facilitates the handling of the handle 3.

Preferably, the fixing part comprises a mounting plate 2, a hook 7 is mounted on the mounting plate 2, and a hanging ring 6 is mounted at the lower end of a screw 10. When the hood lock is installed, the bottom plate 1 is fixed on the upper hood by bolts, and the mounting plate 2 is correspondingly installed on the vehicle body.

The foregoing is merely a preferred embodiment of the present application, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present application, and these modifications and substitutions should also be considered as being within the scope of the present application.

Claims

1. The upper hood lock comprises a movable part and a fixed part and is characterized in that the movable part comprises a bottom plate (1), a handle (3) is hinged on the bottom plate (1), a pull rod (5) is hinged on the handle (3), a nut (18) is slidably arranged on the pull rod (5), a hanging ring (6) or a hanging hook (7) for connecting the fixed part is arranged at the lower end of the pull rod (5), a screw (10) is arranged on the hanging ring (6) or the hanging hook (7), and the screw (10) is in threaded connection with the nut (18) on the pull rod (5);

the pull rod (5) comprises two left and right spaced side plates (19), a connecting plate (20) for fixedly connecting the two side plates (19) is arranged between the two side plates (19), a guide plate (21) is fixedly arranged at the lower parts of the two side plates (19), guide holes are formed in the guide plate (21), and the screw rod (10) penetrates through the guide holes and stretches into the space between the two side plates (19);

the two side plates (19) are provided with sliding grooves (14), the sliding grooves (14) extend along the length direction of the side plates (19), the sliding grooves (14) on the two side plates (19) are corresponding to each other left and right, a supporting seat (12) is arranged between the two side plates (19), sliding blocks (22) are arranged on the left side and the right side of the supporting seat (12), the two sliding blocks (22) respectively extend into the sliding grooves (14) of the two side plates (19), the sliding blocks (22) are in sliding fit with the sliding grooves (14), and nuts (18) are arranged on the sliding blocks (22);

a spring (11) is arranged between the supporting seat (12) and the guide plate (21), two ends of the spring (11) respectively lean against the supporting seat (12) and the guide plate (21), the spring (11) is sleeved outside the screw rod (10), and the screw rod (10) sequentially passes through the guide plate (21) and the supporting seat (12) and is then connected with the nut (18);

the handle (3) is provided with a lock head pipe (8), a rotating tongue lock is arranged in the lock head pipe (8), the rotating tongue lock comprises a lock cylinder (16) which is rotatably arranged in the lock head pipe (8), a lock tongue (13) is arranged on the lock cylinder (16), the lock tongue (13) extends out of the lock head pipe (8), and a limit baffle (9) which is used for being matched with the lock tongue (13) is arranged on the bottom plate (1).

2. The upper hood lock according to claim 1, characterized in that a limit groove (17) is arranged on the side portion of the lock cylinder (16), the limit groove (17) is arranged around the rotation axis of the lock cylinder (16), a jack (23) is arranged on the lock cylinder tube (8), the jack (23) penetrates through the lock cylinder tube (8), a limit rod (15) is inserted into the jack (23), and the limit rod (15) extends into the limit groove (17).

3. The upper hood lock according to claim 2, characterized in that the limit baffle (9) is located above the hinge seat (4), the limit baffle (9) bulges towards the front side, a through hole (24) for accommodating the lock head pipe (8) is formed in the limit baffle (9), an avoidance hole (25) is formed in the limit baffle (9), the avoidance hole (25) is connected with the through hole (24), and the size of the avoidance hole (25) is not smaller than that of the lock tongue (13).

4. Upper bonnet lock according to claim 2, characterized in that the base plate (1) is provided with a hinge seat (4), and the handle (3) is provided with a rotating shaft (26) in rotation fit with the hinge seat (4).

5. The upper hood lock according to claim 4, characterized in that the lock cylinder tube (8) is located at the middle part of the handle (3), the rotating shaft (26) is located at the lower end of the handle (3), and the hinge point of the pull rod (5) and the handle (3) is located at the part between the lock cylinder tube (8) and the rotating shaft (26).

6. The upper hood lock according to any one of claims 1 to 5, wherein the fixing portion includes a mounting plate (2), the hanger (7) is mounted on the mounting plate (2), and the hanger ring (6) is mounted at a lower end of the screw (10).