Mechanical locking device of cab

Abstract

The invention discloses a cab mechanical locking device which comprises a mechanical lock body, a locking bolt mechanism is installed on the mechanical lock body, and an unlocking mechanism capable of being remotely controlled is connected to the locking bolt mechanism. And the locking bolt mechanism is mounted in a mounting hole of the vehicle body and is connected with the upper and lower locking plates in a clamping manner. When the cab falls to a base plate on the upper portion of the locking bolt assembly with the buffering function, the two opened locking pieces are automatically buckled into clamping grooves in the locking bolts, and the cab is locked. The lock is triggered to be unlocked or locked through the pull rod. The mechanism is simple in construction, easy and convenient to install, free of influence of external factors, safe and reliable.

Description

Technical Field

[0001] The invention relates to the field of engineering machinery, and in particular to a mechanical locking device for a cab. Background Art

[0002] Most construction machinery includes a cab. Normally, the cab is tilted by a hydraulic cylinder, and a hydraulic lock is installed between the cab and the frame. When the cab falls into place, the hydraulic lock automatically locks the cab. However, the hydraulic lock and its supporting hydraulic pump unit may have power outages or hydraulic failures, resulting in the cab being unable to tilt in time and unable to meet the maintenance needs in emergency situations. In addition, the hydraulic lock has a complex structure, occupies a large space, and has high installation requirements, which cannot meet current needs. Summary of the invention

[0003] In view of the above defects or shortcomings, an object of the present invention is to provide a mechanical locking device for a cab, which has a simple structure, is quick to install and reliable to use.

[0004] To achieve the above purpose, the technical solution of the present invention is:

[0005] A mechanical locking device for a cab comprises: a locking bolt mechanism installed in a mounting hole of a vehicle body, a mechanical lock body being mounted on the locking bolt mechanism, a locking member in the mechanical lock body being locked or unlocked with the locking bolt mechanism, and an unlocking mechanism which can be remotely controlled to switch on and off is connected to the mechanical lock body.

[0006] The mechanical lock body comprises: a lock body shell, the locking member is installed in the lock body shell, the locking member cooperates with the locking bolt mechanism to lock or open the cab, and a lock body upper cover is installed on the lock body shell.

[0007] The locking member comprises: a partition installed in the lock body shell, on which a first lock buckle and a second lock buckle that can be opened and closed are installed, and the first lock buckle and the second lock buckle are respectively arranged on both sides of the locking bolt mechanism and are installed in a clamping manner.

[0008] A first lock buckle spring is correspondingly installed on the first lock buckle, a second lock buckle spring is correspondingly installed on the second lock buckle, a mounting slot is installed on the lock body shell, and the end of the unlocking mechanism is snap-fitted and installed on the mounting slot and then connected to the protruding end of the first lock buckle.

[0009] A limiting sleeve is installed inside the first locking spring and the second locking spring.

[0010] A lock body upper cover is installed on the lock body shell, and the cover presses the first lock spring and the second lock spring to install. The first lock spring and the second lock spring are torsion springs, and the extended end of the torsion spring contacts the inner wall of the lock body upper cover.

[0011] The locking bolt mechanism comprises: a locking bolt, a conical body is arranged at the end of the locking bolt, a slot is arranged in the middle of the conical body, and when the first locking buckle and the second locking buckle are locked, the first locking buckle and the second locking buckle are engaged and installed in the slot.

[0012] The end of the locking bolt is sleeved with a buffer mechanism, which includes a pad and an upper buffer pad sleeved on the locking bolt, a limiting sleeve is installed on the inner hole of the upper buffer pad, and the other end of the limiting sleeve is installed with a lower buffer pad and a pad.

[0013] The unlocking mechanism is a pull rod unlocking mechanism, which comprises a pull rod, wherein a joint ball bearing is installed at the end of the pull rod connected to the unlocking mechanism, and a handle is installed at the other end.

[0014] The unlocking mechanism is a cable unlocking mechanism, which includes a cable, wherein both ends of the cable are connected to a connecting rod through a second nut, a joint ball bearing is installed at the end where the connecting rod is connected to the unlocking mechanism, and a handle is installed at the other end.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] The present invention provides a cab mechanical locking device. By setting a distance-controlled unlocking mechanism, the mechanical lock body can be driven, thereby driving the locking bolt mechanism to move, so that two buckled locking pieces can be opened. When contacting the locking bolt in the mechanism, under the guidance of the cone surface at the top of the locking bolt, the two buckled locking pieces in the cab lock body automatically open, and at the moment when the cab sits on the upper pad of the self-contained buffer locking bolt assembly, the two opened locking pieces automatically buckle into the card slot in the locking bolt to lock the cab. The present invention can control the opening or locking of the lock at a longer distance by installing a flexible shaft, and can also trigger the opening or locking of the lock by a pull rod at a shorter distance. The set of mechanisms has a simple structure, is easy to install, is not affected by external factors, and is safe and reliable.

[0017] Furthermore, the unlocking mechanism in the present invention includes two unlocking mechanisms: a pull rod and a pull cable. When the cab lock body is close to the operator and there is sufficient installation space, a cab locking mechanism with a pull rod unlocking mechanism can be adopted. This mechanism has a simple structure and is extremely easy to install. When the cab lock is far away from the operator, a cab locking mechanism with a pull cable unlocking mechanism can be adopted. This mechanism is not limited by internal space and distance, and the installation arrangement is flexible. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the mechanical locking device of the cab of the present invention using a pull rod as an unlocking mechanism;

[0019] Figure 2 It is a schematic diagram of the structure of the mechanical locking device for the cab of the present invention using a cable as an unlocking mechanism;

[0020] Figure 3 It is a schematic diagram of the structure of the mechanical lock body of the mechanical locking device of the cab of the present invention;

[0021] Figure 4 It is a schematic diagram of the locking bolt assembly structure of the mechanical locking device of the cab of the present invention;

[0022] Figure 5 It is a schematic diagram of the structure of the pull rod unlocking mechanism of the mechanical locking device of the cab of the present invention;

[0023] Figure 6 The present invention is a schematic diagram of the structure of the cable unlocking mechanism of the mechanical locking device of the cab.

[0024] In the figure, 1 is a mechanical lock body, 2 is a locking bolt assembly, and 3 is an unlocking mechanism;

[0025] 1-1 lock body shell, 1-2 partition, 1-3 first lock buckle, 1-4 second lock buckle, 1-5 first lock buckle spring, 1-6 second lock buckle spring, 1-7 limit sleeve, 1-8 lock body upper cover plate, 1-9 rivet tube;

[0026] 2-1 locking bolt, 2-2 backing plate, 2-3 upper buffer pad, 2-4 limiting sleeve, 2-5 lower buffer pad, 2-6 elastic washer, 2-7 locking nut, 2-1-1 cone, 2-1-2 slot;

[0027] 3-1 pull rod unlocking mechanism, 3-2 pull cable unlocking mechanism;

[0028] 3-1-1 pull rod, 3-1-2 joint ball bearing, 3-1-3 first nut, 3-1-4 locking threaded sleeve, 3-1-5 handle;

[0029] 3-2-1 Cable, 3-2-2 Second nut, 3-2-3 Cable fixing seat, 3-2-4 Bolt. DETAILED DESCRIPTION

[0030] The present invention will be described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the protection scope of the present invention.

[0031] like Figure 1 , 2As shown, the present invention provides a mechanical locking device for a cab, which is installed between the cab and the frame, and relies on the mechanical device structure to control the opening and closing of the lock, and mainly includes: a locking bolt mechanism 2 installed in a mounting hole of the vehicle body, and a mechanical lock body 1 is mounted on the locking bolt mechanism 2. When the cab contacts the locking bolt mechanism 2, the locking piece in the mechanical lock body 1 is locked with the locking bolt mechanism 2, and the mechanical lock body 1 is connected to an unlocking mechanism 3 that can remotely control the switch.

[0032] Specifically, the mechanical lock body 1 includes: a lock body shell 1-1, the locking member is installed in the lock body shell 1-1, the locking member cooperates with the locking bolt mechanism 2 to lock the cab, and a lock body upper cover plate 1-8 is installed on the lock body shell 1-1.

[0033] like Figure 3 As shown, specifically, the locking member includes: a partition 1-2 installed in the lock body shell 1-1, and a first lock buckle 1-3 and a second lock buckle 1-4 that can be opened and closed are installed on the partition 1-2, and the first lock buckle 1-3 and the second lock buckle 1-4 are respectively arranged on both sides of the locking bolt mechanism 2 and are installed in a snap-fit ​​manner.

[0034] Among them, the first lock buckle 1-3 is correspondingly installed with a first lock buckle spring 1-5, the second lock buckle 1-4 is correspondingly installed with a second lock buckle spring 1-6, the lock body shell 1-1 is installed with a mounting slot, the end of the unlocking mechanism 3 is snap-fitted and installed on the mounting slot and connected to the protruding end of the first lock buckle 1-3, and the first lock buckle spring 1-5 and the second lock buckle spring 1-6 are installed with a limiting sleeve 1-7.

[0035] A lock body cover plate 1-8 is installed on the lock body shell 1-1, and the cover plate 1-8 presses and installs the first lock buckle spring 1-5 and the second lock buckle spring 1-6. Furthermore, the first lock buckle spring 1-5 and the second lock buckle spring 1-6 are torsion springs, and the protruding ends of the torsion springs are in contact with the inner wall of the lock body cover plate 1-8. The lock body cover plate 1-8 is installed on the lock body shell 1-1 through a rivet tube 1-9. When the first lock buckle 1-3 and the second lock buckle 1-4 are pulled by the unlocking mechanism 3, they contact each other and return to their initial positions after being released.

[0036] like Figure 4As shown, the locking bolt mechanism 2 includes: a locking bolt 2-1, a conical body 2-1-1 is provided at the end of the locking bolt 2-1, a slot 2-1-2 is provided in the middle of the conical body 2-1-1, and when the first lock buckle 1-3 and the second lock buckle 1-4 are locked, the first lock buckle 1-3 and the second lock buckle 1-4 are snap-fitted and installed in the slot 2-1-2. Preferably, in order to ensure the rigid contact between the cab and the locking bolt mechanism 2, a buffer mechanism is sleeved on the end of the locking bolt 2-1, and the buffer mechanism includes a pad 2-2 and an upper buffer pad 2-3 sleeved on the locking bolt 2-1, a limiting sleeve 2-4 is installed on the inner hole of the upper buffer pad 2-3, and the other end of the limiting sleeve 2-4 is installed with a lower buffer pad 2-5 and a pad 2-2, and the end of the pad 2-2 is tightened by the elastic washer 2-6 and the locking nut 2-7. Fixed installation; the locking bolt 2-1 passes through the mechanical lock body 1; a cone is provided at the end of the locking bolt 2-1, and a pad 2-2, an upper buffer pad 2-3, a lower buffer pad 2-5, and an elastic washer 2-6 are installed on the locking bolt 2-1, and a limiting sleeve 2-4 is installed between the upper buffer pad 2-3 and the lower buffer pad 2-5, and the pad 2-2, the upper buffer pad 2-3, the lower buffer pad 2-5, and the elastic washer 2-6 are installed in the mounting hole on the vehicle body.

[0037] For the convenience of installation and use, unlocking mechanisms 3 of different structures can be provided according to the distance between the lock body 1 and the operator. For example, the present invention provides specific descriptions of two structures, namely, a pull rod unlocking mechanism 3-1 and a pull cable unlocking mechanism 3-2.

[0038] like Figure 5 As shown, the first type is a pull rod unlocking mechanism 3-1. When the mechanical lock body 1 is close to the operator, the pull rod unlocking mechanism 3-1 is selected. The pull rod unlocking mechanism 3-1 includes: a pull rod 3-1-1, and a joint ball bearing 3-1-2 is installed at the end where the pull rod 3-1-1 is connected to the unlocking mechanism 3, and a handle 3-1-5 is installed at the other end. The handle 3-1-5 is a T-shaped handle; when the driver pulls the handle 3-1-5, the 3-1-1 pull rod is driven to move, and then the joint ball bearing 3-1-2 is driven to move, driving the locking bolt mechanism 2 to open, and locking the cab.

[0039] Both ends of the unlocking mechanism 3 are provided with connecting threads, the length of the threads meets the installation and adjustment requirements, the joint ball bearing 3-1-2 at one end is connected to the first lock buckle 1-3 in the mechanical lock body 1, and is fixed with a first nut 3-1-3; the other end is connected to the T-shaped handle and is locked with a locking threaded sleeve 3-1-4; the set of mechanisms has a simple structure, is easy to install, and is safe and reliable.

[0040] When the cab lock body 1 is far away from the operator, the cable unlocking mechanism 3-2 is selected. This solution has the advantages of long action distance, low internal space requirements, and flexible cable arrangement;

[0041] like Figure 6 As shown, the second type is a cable unlocking mechanism 3-2 including: a cable 3-2-1, both ends of the cable 3-2-1 are connected to a connecting rod through a second nut 3-2-2, the end of the connecting rod connected to the unlocking mechanism 3 is installed with a joint ball bearing 3-1-2, and the other end is installed with a handle 3-1-5. The connecting rod fixes the end close to the cab lock body 1 to the corresponding mounting slot of the lock body shell 1-1, and the end of the cable 3-2-1 close to the cab is fixed to the cable 3-2-3 fixing seat to the corresponding mounting seat of the cab by bolts 3-2-4.

[0042] The mechanical lock body 1 is installed at the bottom of the cab, and the locking bolt mechanism 2 is installed in the corresponding mounting hole of the vehicle body, and the two are coaxial. When installing the locking bolt mechanism 2, the upper buffer pad 2-3 is inserted from top to bottom into the mounting hole of the vehicle body, and the upper surface of the mounting hole of the vehicle body contacts the step surface of the upper buffer pad 2-3, and the limiting sleeve 2-4 is inserted into the inner hole of the upper buffer pad 2-3, and then the lower buffer pad 2-5 is sleeved on the step shaft of the upper buffer pad 2-3 from the bottom of the vehicle body mounting hole. When installing the locking bolt 2-1, first put a pad 2-2 on the upper buffer pad 2-3, and then install the threaded end of the locking bolt 2-1 downward, pass through the pad 2-2, the limiting sleeve 2-4 in turn, and then put another pad 2-2 under the lower buffer pad 2-5, and pass through the screw for installing the locking bolt 2-1, and finally tighten it with an elastic washer 2-6 and a locking nut 2-7.

[0043] The working process of the present invention is:

[0044] The mechanical lock body 1 is a normally closed mechanism, that is, it is always in the locked position, the first lock buckle 1-3 and the second lock buckle 1-4 are closed on the conical surface of the locking bolt 2-1, when the cab falls and contacts the locking bolt 2-1, under the guidance of the top conical surface of the locking bolt 2-1, the two engaged first lock buckles 1-3 and the second lock buckles 1-4 in the mechanical lock body 1 automatically open, and at the moment the cab sits on the upper pad 2-2, the two opened lock plates automatically engage with the slots 2-1-2 in the locking bolt to lock the cab, and then, the unlocking mechanism 3 can be used to open the two engaged first lock buckles 1-3 and the second lock buckles 1-4 to release the lock.

[0045] The present invention adopts a locking bolt assembly 2 with self-buffering, which includes a pair of rubber buffer pads 2-2, and a limiting sleeve 2-4 is embedded in the middle of the buffer pad 2-2. When the locking bolt 2-1 is installed in place, the mechanical lock body 1 of the cab is integrated with the cab to form a floating installation, which has the effect of isolating the vibration of the main engine.

[0046] The unlocking mechanism in this scheme includes two unlocking mechanisms: a pull rod and a cable. When the cab lock body is close to the operator and there is sufficient installation space, a cab locking mechanism with a pull rod unlocking mechanism can be used. This mechanism has a simple structure and is extremely easy to install. When the cab lock is far away from the operator, a cab locking mechanism with a cable unlocking mechanism can be used. This mechanism is not limited by internal space and distance, and the installation layout is flexible.

[0047] The present invention adopts a purely mechanically controlled cab locking mechanism to achieve a highly reliable cab locking function, avoiding the shortcomings of other locks such as complex structure, large space occupation, high installation requirements and high use cost. It has ingenious design, easy installation, flexible layout, low use cost and good promotion value.

[0048] It is obvious to those skilled in the art that the above specific examples are only preferred embodiments of the present invention. Therefore, the improvements and changes that may be made by those skilled in the art to certain parts of the present invention still reflect the principles of the present invention and achieve the purpose of the present invention, and all fall within the scope of protection of the present invention.

Claims

1. A cab mechanical locking device, characterized in that: include: A locking bolt mechanism (2) is installed in a mounting hole of a vehicle body, and a mechanical lock body (1) is mounted on the locking bolt mechanism (2). When the cab contacts the locking bolt mechanism (2), a locking member in the mechanical lock body (1) is locked with the locking bolt mechanism (2). An unlocking mechanism (3) capable of remotely controlling a switch is connected to the mechanical lock body (1).

2. The cab mechanical locking device according to claim 1, characterized in that: The mechanical lock body (1) comprises: a lock body shell (1-1), the locking member installed in the lock body shell (1-1), the locking member cooperates with the locking bolt mechanism (2) to lock or open the cab, and a lock body upper cover plate (1-8) is installed on the lock body shell (1-1).

3. The cab mechanical locking device according to claim 2, characterized in that: The locking member comprises: a partition (1-2) installed in a lock body shell (1-1); a first lock buckle (1-3) and a second lock buckle (1-4) which can be opened and closed are installed on the partition (1-2); the first lock buckle (1-3) and the second lock buckle (1-4) are respectively arranged on two sides of a locking bolt mechanism (2) and are installed in a snap-fitting manner.

4. The cab mechanical locking device according to claim 3, characterized in that: The first lock buckle (1-3) is correspondingly mounted with a first lock buckle spring (1-5), the second lock buckle (1-4) is correspondingly mounted with a second lock buckle spring (1-6), the lock body shell (1-1) is mounted with a mounting slot, and the end of the unlocking mechanism (3) is connected to the protruding end of the first lock buckle (1-3) after being mounted on the mounting slot.

5. The cab mechanical locking device according to claim 4, characterized in that: A limiting sleeve (1-7) is installed inside the first locking spring (1-5) and the second locking spring (1-6).

6. The cab mechanical locking device according to claim 4 or 5, characterized in that: A lock body upper cover plate (1-8) is installed on the lock body shell (1-1), and the cover plate (1-8) is pressed and installed with a first lock buckle spring (1-5) and a second lock buckle spring (1-6), wherein the first lock buckle spring (1-5) and the second lock buckle spring (1-6) are torsion springs, and the extended ends of the torsion springs are in contact with the inner wall of the lock body upper cover plate (1-8).

7. The cab mechanical locking device according to claim 3, characterized in that: The locking bolt mechanism (2) comprises: a locking bolt (2-1), a conical body (2-1-1) being arranged at the end of the locking bolt (2-1), a clamping groove (2-1-2) being arranged in the middle of the conical body (2-1-1), and when the first locking buckle (1-3) and the second locking buckle (1-4) are locked, the first locking buckle (1-3) and the second locking buckle (1-4) are clamped and installed in the clamping groove (2-1-2).

8. The cab mechanical locking device according to claim 7, characterized in that: The end of the locking bolt (2-1) is sleeved with a buffer mechanism, the buffer mechanism comprising a pad (2-2) and an upper buffer pad (2-3) sleeved on the locking bolt (2-1), a limiting sleeve (2-4) is installed on the inner hole of the upper buffer pad (2-3), and the other end of the limiting sleeve (2-4) is installed with a lower buffer pad (2-5) and a pad (2-2).

9. The cab mechanical locking device according to claim 1, characterized in that: The unlocking mechanism (3) is a pull rod unlocking mechanism (3-1), and the pull rod unlocking mechanism (3-1) comprises: a pull rod (3-1-1), a joint ball bearing (3-1-2) is installed at the end of the pull rod (3-1-1) connected to the unlocking mechanism (3), and a handle (3-1-5) is installed at the other end.

10. The cab mechanical locking device according to claim 1, characterized in that: The unlocking mechanism (3) is a cable unlocking mechanism (3-2), and the cable unlocking mechanism (3-2) comprises: a cable (3-2-1), both ends of the cable (3-2-1) are connected to a connecting rod via a second nut (3-2-2), a joint ball bearing (3-1-2) is installed at the end of the connecting rod connected to the unlocking mechanism (3), and a handle (3-1-5) is installed at the other end.

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