Electric window opening and closing device of cockpit
Technical Field
The invention belongs to the field of cabins, and particularly relates to an electric window opening and closing device of a cab.
Background
Engineering machinery is an important component of the equipment industry. In general, mechanical equipment necessary for earth-rock construction work, road construction and maintenance, mobile lifting and loading and unloading work, and comprehensive mechanized construction work required for various construction works is called engineering machinery. The method is mainly used in the fields of national defense construction engineering, traffic transportation construction, energy industry construction and production, raw material industry construction and production such as mines, agriculture, forestry, water conservancy construction, industrial and civil buildings, city construction, environmental protection and the like.
At present, in the cockpit of engineering machine tool, the manual operation of operating personnel is all needed to open and close of its upset window, because upset window self has great dead weight, and in the manual operation process, the loss to operating personnel's physical power is great, has increased working strength. Moreover, when the turnover window is closed, in order to ensure the tightness, an operator is required to provide larger thrust, and then the spring type ratchet lock is triggered to lock, and after the spring type ratchet lock is locked, the spring type ratchet lock can generate certain reset, so that the thrust applied to the turnover window is weakened, and the sealing effect is influenced.
Disclosure of Invention
Aiming at the defects or improvement demands of the prior art, the invention provides the electric window opening and closing device of the cockpit, which can lighten the working intensity of operators, improve the sealing performance of the turnover window, realize the one-key opening and closing of the turnover window, has enough sealing performance after the turnover window is closed, and solves the problems of high working intensity and weaker sealing performance after the turnover window is closed when the operators manually open and close the turnover window.
In order to achieve the above object, according to the present invention, there is provided an electric window opening and closing device for a cockpit, the cockpit including a cabin body and a roll-over window, characterized in that,
The electric window opening and closing device comprises a guide rail, a motor assembly and a rigid chain, wherein:
the guide rail comprises a first guide section, a second guide section and an arc-shaped section for connecting the first guide section and the second guide section, the first guide section is positioned below the second guide section, and the first guide section and the second guide section are respectively arranged on the front side and the left side of the inner wall of the cabin body;
the first guide section is movably provided with a moving part so that the moving part moves up and down along the first guide section, and the moving part is hinged with the first end of the turnover window through a first hinge shaft;
The rigid chain is movably arranged on the guide rail, the front end of the rigid chain can be bent downwards when moving in the arc section, the front end of the rigid chain is provided with a connecting block, the connecting block is hinged with the second end of the turnover window through a second hinge shaft, and the first hinge shaft and the second hinge shaft are both horizontally arranged, and the axes of the first hinge shaft and the second hinge shaft extend along the left-right direction;
The motor component is arranged on the left side of the inner wall of the cabin body and connected with the rigid chain, so that the turnover window is driven to turn over by the rigid chain to open and close the front end window of the cabin body.
Preferably, the device further comprises an electric push rod assembly arranged on the right side of the inner wall of the cabin body, and the electric push rod assembly is used for pressing on the turnover window to enable the turnover window to be attached to a sealing strip on a window edge of the front end window and releasing pressure applied on the turnover window to enable the turnover window to be turnover.
Preferably, the electric push rod assembly comprises an electric push rod, a connecting rod, a limiting rod and a limiting pin, wherein the electric push rod and the limiting pin are both arranged on the right side of the inner wall of the cabin, the output end of the electric push rod is hinged with the first end of the connecting rod through a third hinge, the second end of the connecting rod is hinged with the first end of the limiting rod through a fourth hinge, a strip hole is formed in the limiting rod, the limiting pin stretches into the strip hole, the second end of the limiting rod is used for pressing on the turnover window to enable the turnover window to be attached to a sealing strip on the window edge of the front-end window, and pressure applied to the turnover window is relieved to enable the turnover window to be turned, and the third hinge and the fourth hinge are horizontally arranged, and the axis extends along the left-right direction.
Preferably, the electric push rod is a worm gear type electric push rod.
Preferably, the device further comprises a window closing micro switch arranged on the front side of the inner wall of the cabin body and used for contacting with the turnover window after the turnover window is turned in place, so that the motor assembly is controlled to stop rotating, and the electric push rod assembly is enabled to act to press the turnover window to enable the turnover window to be attached to the sealing strip on the window edge of the front window.
Preferably, the motor assembly further comprises a window opening micro switch arranged on the inner wall of the cabin body and used for contacting the turnover window after the turnover window is turned in place, so that the motor assembly is controlled to stop rotating.
Preferably, the device further comprises a limiting block arranged on the inner wall of the cabin body and used for being in contact with the turnover window to realize mechanical limiting after the turnover window is opened and turned in place.
Preferably, the motor assembly comprises a gear motor and a speed reducer connected with an output shaft of the gear motor, and the speed reducer is connected with the rigid chain.
Preferably, the gear motor is a worm gear type gear motor.
Preferably, a pinion is mounted on the output shaft of the gear motor, the speed reducer comprises a large gear and a sprocket which are coaxially connected together, and the pinion is meshed with the large gear to drive the large gear to rotate, so as to drive the sprocket to rotate, and further drive a rigid chain connected with the sprocket to move along the guide track.
In general, the above technical solutions conceived by the present invention, compared with the prior art, enable the following beneficial effects to be obtained:
1) According to the electric window opening and closing device, the motor assembly is adopted to drive the rigid chain to drive the turnover window to turn over, the rigid chain has the characteristic of being capable of being bent in one direction only, the window opening and closing action can be well achieved under the support of the guide rail, and after the window is closed, enough thrust can be continuously provided for the left side of the turnover window under the characteristic that the rigid chain can be bent downwards only, so that the sealing effect of sealing strips at the window at the front end and the turnover window is ensured.
2) According to the electric window opening and closing device, after the window is closed by the electric push rod assembly, enough thrust can be continuously provided, and the sealing effect of the sealing strip at the window of the front end and the turnover window is ensured.
3) According to the electric window opening and closing device, the micro switches are arranged at the front end and the rear end of the cockpit, so that automatic window opening and closing control is conveniently realized, mechanical limiting is realized at the window closing position by the contact of the front end of the cockpit and the turnover window, mechanical limiting is realized at the window opening position by the limiting block, and damage to the micro switches caused by the failure of a control system is avoided.
4) The invention well utilizes the structural characteristics of the cockpit, and has negligible influence on the space of the cockpit. The processing technology of the parts used by the device is simple, the cost is lower, and after the device is added, the original manual operation parts in the cockpit can be greatly reduced, and the cost is obviously controlled while the automatic window opening and closing is realized.
Drawings
FIG. 1 is a schematic view of the structure of the rigid chain side of the device for automatically opening and closing a roll-over window of the present invention;
FIG. 2 is a schematic view of the structure of the electric push rod side of the device for automatically opening and closing the turnover window;
Fig. 3 is a schematic diagram of the structure of the inside of a decelerator of the device for automatically opening and closing a roll-over window according to the present invention.
The same reference numbers are used throughout the drawings to reference like elements or structures, wherein:
the device comprises a 1-motor component, a 2-speed reducer, a 3-rigid chain, a 4-electric push rod, a 5-push rod component, a 6-window-closing micro switch, a 7-window-opening micro switch, an 8-limiting block component, a 9-turnover window, a 10-cockpit and an 11-connecting rod.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention. In addition, the technical features of the embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
Referring to fig. 1-3, an electric window opening and closing device for a cockpit, the cockpit 10 includes a cabin body and a turnover window 9, the electric window opening and closing device includes a guide rail 12, a motor assembly and a rigid chain 3, wherein:
the guide rail 12 comprises a first guide section 121, a second guide section 123 and an arc-shaped section 122 for connecting the first guide section 121 and the second guide section 123, the first guide section 121 is located below the second guide section 123, the first guide section 121 and the second guide section 123 are respectively arranged on the front side and the left side of the inner wall of the cabin body, the second guide section 123 is arranged beside a front end window of the cockpit 10 and is arranged along the up-down direction, and the second guide section 123 is preferably horizontally arranged and is mainly used for bearing the rigid chain 3.
The first guiding section 121 is movably provided with a moving member, so that the moving member can move up and down along the first guiding section 121, the moving member can be a sliding block, a roller, a bearing or the like, the first guiding section 121 has a limiting effect on the moving member, the moving member is prevented from being separated from the first guiding section 121, and the moving member is hinged with the first end of the turnover window 9 through a first hinge shaft. Due to the high weight of the tilting window 9, an auxiliary rail can also be arranged on the right side of the cockpit 10, which rail is juxtaposed to the first guide section 121, and on which auxiliary rail a further displacement element is also mounted for hinging the first end of the tilting window 9, which auxiliary rail together with the first guide section 121 supports the first end of the tilting window 9 and guides it.
The rigid chain 3 is movably installed on the guide rail 12, and the front end of the rigid chain 3 can be bent downwards when moving in the arc-shaped section 122, the front end of the rigid chain 3 is provided with a connecting block, the connecting block is hinged with the second end of the turnover window 9 through a second hinge shaft, wherein the first hinge shaft and the second hinge shaft are horizontally arranged, the axis of the first hinge shaft extends along the left-right direction, and the second end of the turnover window 9 and the first end of the turnover window 9 are opposite;
The motor assembly preferably comprises a gear motor 1 and a speed reducer 2 connected with an output shaft of the gear motor 1, wherein the speed reducer 2 is connected with the rigid chain 3. The motor assembly is arranged on the left side of the inner wall of the cabin and is connected with the rigid chain 3, so that the turnover window 9 is driven to turn over by the rigid chain 3 to open and close the front end window of the cabin. When the turnover window 9 is turned over, the first end and the second end of the turnover window 9 respectively move along the guide rails 12 and simultaneously respectively rotate around the central lines of the first hinge shaft and the second hinge shaft.
Since the rigid chain 3 is only capable of being bent unidirectionally and the front end (bendable end) is only capable of being bent downward, the driving section of the rigid chain 3 is disposed in the guide rail 12 (most of the driving section is disposed in the second guide section 123), and the rigid chain 3 is moved in the second guide section 123 to push the roll-over window 9 to operate, the rigid chain 3 is not substantially bent, so that the reaction force pushing the roll-over window 9 is substantially entirely exerted on the sprocket of the decelerator 2 that cooperates with the rigid chain 3 without generating excessive force to the second section of the guide rail 12. When the turnover window 9 is closed by being attached to the sealing strip, the rigid chain 3 continuously applies pushing force to the left end of the turnover window 9 at the side, so that the tightness of the turnover window is ensured.
When the turnover window 9 is in a window closing state, the first end and the second end of the turnover window 9 are respectively the lower end and the upper end of the turnover window 9, after the turnover window 9 is opened and turned in place, the turnover window 9 is in a state of being approximately horizontal, the first end of the turnover window 9 is the front end close to the front end window, and the second end of the turnover window 9 is the rear end.
Further, the device also comprises an electric push rod assembly arranged on the right side of the inner wall of the cabin body, and the electric push rod assembly is used for pressing on the overturning window 9 to enable the overturning window 9 to be attached to a sealing strip on the window edge of the front end window and releasing the pressure applied on the overturning window 9 to enable the overturning window 9 to be overturned. Because the front end of the rigid chain 3 is bent downwards on the left side of the turnover window 9 to press the turnover window 9, the left side of the turnover window 9 can be contacted and pressed with the sealing strip, and under the action of dead weight of the turnover window 9, the sealing strip at the upper right corner of the turnover window 9 can be pressed loosely, so that the sealing strip needs to be pressed by pressing the right end of the turnover window 9, especially the upper right corner. Preferably, the electric push rod assembly comprises an electric push rod 4, a connecting rod 11, a limiting rod 5 and limiting pins, wherein the electric push rod 4 and the limiting pins are arranged on the right side of the inner wall of the cabin, the output end of the electric push rod 4 is hinged with the first end of the connecting rod 11 through a third hinge shaft, the second end of the connecting rod 11 is hinged with the first end of the limiting rod 5 through a fourth hinge shaft, a long strip hole is formed in the limiting rod 5, the limiting pins extend into the long strip hole, the limiting pins are preferably provided with two limiting rods so that the limiting rods can move linearly along the longitudinal direction of the limiting rods, the second end of the limiting rod 5 is used for pressing on the overturning window 9 to enable the overturning window 9 to be attached to a sealing strip on the window edge of the front end window, and pressure applied to the overturning window 9 is relieved, and the third hinge shaft and the fourth hinge shaft are horizontally arranged, and the axis extends along the left-right direction. By the cooperation of the connecting rod 11, the limit rod 5 and the like, the stroke of the electric push rod 4 can be prolonged, and the electric push rod 4 is also conveniently arranged in the cockpit 10.
Further, the electric push rod 4 is a worm gear type electric push rod, and the gear motor 1 is a worm gear type gear motor 1. The gear motor 1 has a self-locking function, and can realize the functions of locking and maintaining the position of the turnover window 9 in real time and locking after power failure in the process of driving the turnover window 9 through the rigid chain 3. The electric push rod 4 also has a self-locking function, and can realize a locking and retaining function after power failure when the overturning window 9 is sealed by driving the push rod mechanism.
The invention further comprises a window closing micro switch 6 arranged on the front side of the inner wall of the cabin body and used for contacting with the turnover window 9 after the turnover window 9 is turned in place, so as to control the motor component to stop rotating and enable the electric push rod component to act to press on the turnover window 9 to enable the turnover window 9 to be attached to a sealing strip on the window edge of the front window.
Further, the motor assembly further comprises a window opening micro switch 7 arranged on the inner wall of the cabin body and used for enabling the window opening of the turnover window 9 to be in contact with the turnover window 9 after being turned in place, so that the motor assembly is controlled to stop rotating.
Further, the device also comprises a limiting block 8 arranged on the inner wall of the cabin body, wherein a limiting block 8 component is used as a mechanical limit in the windowing process, when the overturning window 9 triggers the windowing micro switch, the overturning window 9 is in contact with the limiting block 8, and the equipment damage caused by continuous operation of the overturning window 9 during the control system fault is avoided.
Further, the gear motor 1 is connected with the speed reducer 2 through a gear transmission mechanism, the gear transmission mechanism comprises a pinion and a gear wheel, the pinion is mounted on an output shaft of the gear motor 1, the speed reducer 2 comprises the gear wheel and a chain wheel which are coaxially connected together, the pinion is meshed with the gear wheel to drive the gear wheel to rotate, thereby driving the chain wheel to rotate, and further driving the rigid chain 3 connected with the chain wheel to move along the guide track 12.
In the window opening process, the push rod of the electric push rod 4 extends to the upper limit, the connecting rod 11 connected with the push rod drives the limiting rod 5 to move to the lower limit, the limiting rod 5 is separated from the turnover window 9 to relieve pressure limitation on the turnover window 9, the turnover window 9 can be turned over, the motor assembly drives the rigid chain 3 to move, the first end of the turnover window 9 is dragged to move upwards along the first guide section 121, the second end of the turnover window 9 sequentially moves towards the rear end of the cockpit 10 along the arc section 122 and the second guide section 123 until the second end triggers a window opening micro switch at the rear end, and window opening is achieved.
In the window closing process, the motor assembly drives the rigid chain 3 to move, so that the first end of the turnover window 9 is pushed to move downwards along the first guide section 121, and the second end of the turnover window 9 sequentially moves towards the front end of the cockpit 10 along the second guide section 123 and the arc section 122 until the turnover window 9 triggers the window closing micro switch, and then the electric push rod 4 drives the limit rod 5 to move to the upper limit to contact with the turnover window 9 so as to press the upper right corner of the turnover window 9, so that the turnover window 9 contacts with a sealing strip of the front end window, the front end window is completely closed, and the window closing action is realized.
The electric window opening and closing device has the characteristics of simple structure, low cost, small occupied space, strong practicability, high safety reliability and the like, and is suitable for wide popularization and use.
It should be appreciated that the foregoing is a number of different embodiments or examples of the different features of the present embodiments. Specific examples of components and arrangements are described above to simplify the illustrated embodiments. Of course, these are merely examples and are not intended to limit the embodiments, for example, the dimensions of the elements are not limited to the disclosed ranges or values, but may be dependent on the process conditions and/or the desired properties of the device.
Furthermore, in the description, a first feature is formed over or on a second feature, which may include embodiments in which the first feature is formed in direct contact with the second feature, which may also include embodiments in which additional features may be formed in interposed first and second features, which may not be in direct contact with the first feature, and various features may be arbitrarily drawn in different ratios for simplicity and clarity of illustration.
Moreover, spatially relative terms, such as "beneath," "below," "lower," "upper," "higher," and the like, may be used herein to facilitate a description of one element or feature relative to another element or feature as illustrated in the figures.
These spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. The device may be oriented differently (e.g., rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It will be readily appreciated by those skilled in the art that the foregoing description is merely a preferred embodiment of the invention and is not intended to limit the invention, but any modifications, equivalents, improvements or alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.