Trolley cab

Abstract

The trolley cab comprises a frame, a jacking mechanism, a grating window and a locking mechanism, the frame comprises a console, the jacking mechanism is installed on the frame, a ceiling is installed at the top of the jacking mechanism, the bottom of the grating window is hinged to the console, and the top of the grating window is installed on the ceiling in a sliding mode; the jacking mechanism comprises a supporting rod, and the supporting rod is sequentially provided with an initial position, a set position and a stroke end point position from bottom to top in the vertical direction. The locking mechanism comprises a spring bolt, a driving piece and a limiting assembly, the supporting rod is provided with a clamping groove, and when the supporting rod is located at a set position, the spring bolt is inserted into the clamping groove under the action of the driving piece to limit descending of the supporting rod; when the supporting rod is located at the stroke final position, the limiting assembly abuts against the spring bolt to limit action of the spring bolt. According to the trolley cab disclosed by the embodiment of the invention, the ceiling can be automatically locked and limited after being lifted, and the grating window of the cab can be automatically adjusted along with the lifting of the ceiling, so that the safety and the automation level of the trolley cab are improved.

Description

Technical Field

[0001] The invention relates to the technical field of mining machinery, and in particular to a trolley cab. Background Art

[0002] The tunnels of some mine construction are relatively narrow, and there are requirements for the height of the construction equipment. Therefore, the cab roof of the trolley is required to have a lifting function. However, the cab of the current mine construction trolley with a lifting function has the following problems:

[0003] 1. The cab of a trolley with a retractable roof needs to manually insert a latch to limit the roof after the roof is raised, which is troublesome to operate;

[0004] 2. Currently, most trolley cabs are open structures without windows or other obstructions, which poses a risk of being hit by ores, etc.; and trolleys equipped with detachable grille windows need to remove the grille windows when the roof is raised or lowered, which has a low degree of automation and is cumbersome to operate, thereby reducing operating efficiency. Summary of the invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a trolley cab, which can automatically lock and limit after the roof is raised, and the grille window of the cab can automatically adjust with the lifting of the roof, thereby improving the safety and automation level of the trolley cab.

[0006] The trolley cab according to the first embodiment of the present invention comprises:

[0007] The frame, including the console and seats;

[0008] A lifting mechanism is installed on the frame; a ceiling is installed on the top of the lifting mechanism; the lifting mechanism includes a support sleeve, a support rod and a power device, the support rod is movably lifted and lowered through the support sleeve, and the power device is used to drive the support rod to vertically lift; along the vertical direction from bottom to top, the support rod has an initial position, a set position and a stroke end position in sequence;

[0009] A grille window, the bottom of which is hinged to the control console and the top of which is slidably mounted on the ceiling;

[0010] A locking mechanism is installed on the support sleeve; the locking mechanism includes a locking tongue, a driving member and a limiting assembly, the driving member is used to drive the locking tongue to move in a direction close to the support rod, and the limiting assembly is used to limit the movement of the locking tongue in a direction close to the support rod; the support rod is provided with a slot, and when the support rod rises from the initial position to the set position, the locking tongue is inserted into the slot to limit the support rod from descending; when the support rod rises to the end position of the stroke, the limiting assembly abuts against the locking tongue to limit the movement of the locking tongue, so that the support rod can descend to the initial position relative to the support sleeve.

[0011] The trolley cab according to the embodiment of the present invention has at least the following beneficial effects:

[0012] By setting a locking mechanism to limit the jacking mechanism, it can be ensured that the support rod of the jacking mechanism can automatically lock the limit when moving to the set position. At the same time, the support rod can automatically switch between the initial position, the set position and the end position of the stroke without manual operation, which greatly improves the convenience of operation and the degree of automation of the trolley cab; the grille window can be automatically adjusted according to the rise and fall of the ceiling, also without manual operation, thereby improving work efficiency and protecting personnel safety.

[0013] According to some embodiments of the present invention, the limit assembly includes a snap rod, the snap rod is provided with a hook groove, and the lock tongue is provided with a radially protruding limit block; when the support rod is at the end position of the stroke, the limit block is located in the hook groove.

[0014] According to some embodiments of the present invention, the limit block is provided with a first plane on a side facing the support rod, and a first inclined surface on a side facing away from the support rod; a second inclined surface is provided on the first end of the buckle rod in the length direction, and a second plane is provided on a groove wall on one side of the hook groove close to the support rod;

[0015] When the first plane abuts against the second plane, the buckle rod can limit the movement of the locking tongue in a direction close to the supporting rod.

[0016] According to some embodiments of the present invention, the locking mechanism includes a shell, the shell is provided with a first mounting axis, the middle part of the snap rod is sleeved on the first mounting axis and can rotate around the first mounting axis; the hook groove is arranged at the first end of the snap rod in the length direction, and the second end of the snap rod in the length direction is connected to the shell through an elastic member, and the elastic member is used to drive the hook groove to rotate in a direction close to the lock tongue.

[0017] According to some embodiments of the present invention, the shell is also provided with a second mounting shaft, and the limit assembly also includes a detent rod, the middle part of which is sleeved on the second mounting shaft and can rotate around the second mounting shaft; the first end of the detent rod in the length direction extends out of the shell to contact the support rod, and the second end of the detent rod in the length direction is against the latch rod; the detent rod cooperates with the support rod to drive the hook groove of the latch rod to rotate in a direction away from the lock tongue.

[0018] According to some embodiments of the present invention, the housing is further provided with a limiting shaft, and the limiting shaft can abut against the detent rod to limit the rotation of the detent rod; the outer peripheral wall of the support rod is provided with a first sliding groove recessed inwards;

[0019] When the support rod is at the set position and the stroke end position, the first end of the detent rod in the length direction is located in the first sliding groove, and the detent rod is against the limit shaft.

[0020] According to some embodiments of the present invention, the locking mechanism includes a shell, the shell is provided with a third mounting axis, the lock tongue is provided with a strip hole, the length extension direction of the strip hole is the radial direction of the support rod; the third mounting axis is passed through the strip hole to guide the lock tongue for sliding.

[0021] According to some embodiments of the present invention, the slot is a wedge-shaped slot, the top side wall of the slot is a horizontal plane, and the bottom side wall of the slot is an inclined plane; a wedge block is installed at the first end of the lock tongue in the length direction corresponding to the slot, and a roller is installed on the side of the wedge block facing the inclined plane; the driving member is installed at the second end of the lock tongue in the length direction, and the two ends of the driving member are respectively against the lock tongue and the shell.

[0022] According to some embodiments of the present invention, the outer peripheral wall of the support rod is provided with a top block protruding from the surface thereof, and the top block is arranged below the card slot;

[0023] When the support rod is at the end position of the stroke, the wedge block abuts against the top block.

[0024] According to some embodiments of the present invention, a second sliding groove is provided on the outer peripheral wall of the support rod, and the clamping groove is arranged at the bottom of the second sliding groove.

[0025] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0027] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0028] Figure 2 A side view of an embodiment of the present invention;

[0029] Figure 3 A schematic diagram of the structure of a ceiling according to an embodiment of the present invention;

[0030] Figure 4 It is a structural schematic diagram of a jacking mechanism according to an embodiment of the present invention;

[0031] Figure 5 It is a schematic diagram of the support rod structure of the jacking mechanism according to an embodiment of the present invention;

[0032] Figure 6 is a schematic diagram of the internal structure of the locking mechanism according to an embodiment of the present invention;

[0033] Figure 7 It is a schematic diagram of the internal structure of the locking mechanism when the support rod according to the embodiment of the present invention is in the initial position;

[0034] Figure 8 It is a schematic diagram of the internal structure of the locking mechanism when the support rod according to the embodiment of the present invention is in a set position;

[0035] Fig. 9 It is a schematic diagram of the internal structure of the locking mechanism when the support rod of the embodiment of the present invention is at the end position of the stroke.

[0036] Figure Number:

[0037] Vehicle frame 100, control console 110, seat 120, roof 130, adjustment hole 131, grille window 140;

[0038] Lifting mechanism 200, supporting sleeve 210, supporting rod 220, clamping slot 221, first slide slot 222, chamfer 2221, lifting block 223, second slide slot 224, power device 230;

[0039] Locking mechanism 300, housing 310, first mounting axis 311, second mounting axis 312, limiting axis 313, third mounting axis 314, stop block 315, locking tongue 320, limiting block 321, first plane 3211, first inclined surface 3212, wedge block 322, strip hole 323, driving member 330, snap rod 340, hook groove 341, second inclined surface 3411, second plane 3412, elastic member 350, and snap rod 360. DETAILED DESCRIPTION

[0040] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0041] In the description of the present invention, it should be understood that descriptions involving orientation, such as orientation or positional relationship indicated as up, down, etc., 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 should not be understood as a limitation on the present invention.

[0042] In the description of the present invention, "a plurality" means more than two. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0043] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0044] Reference Figures 1 to 9 The cab of the trolley according to the embodiment of the present invention comprises a frame 100, a lifting mechanism 200, a grille window 140 and a locking mechanism 300, referring to Figure 1 As shown, the frame 100 includes a control panel 110 and a seat 120. The control panel 110 is arranged in front of the seat 120. Two lifting mechanisms 200 are provided. The two lifting mechanisms 200 are respectively arranged on both sides of the seat 120. The lifting mechanisms 200 are installed on the frame 100. A ceiling 130 is installed on the top of the lifting mechanisms 200. The ceiling 130 extends toward the control panel 110 to shield the operator sitting on the seat 120. Figure 1 , Figure 2 As shown, the bottom of the grille window 140 is hinged to the control console 110, and the top is slidably mounted on the ceiling 130; Figure 3 As shown, an adjustment hole 131 is provided at the bottom of the ceiling 130. The adjustment hole 131 is a long strip-shaped hole, and a connecting pin is passed through the adjustment hole 131, and the connecting pin can slide along the adjustment hole 131; the top of the grille window 140 is connected to the connecting pin, and when the lifting mechanism 200 is vertically lifted, the top of the grille window 140 will slide along the ceiling 130, thereby realizing automatic adjustment of the position of the grille window 140 without manual operation, which not only protects the operator, but also eliminates the need for manual adjustment, thereby improving safety and convenience.

[0045] Reference Figure 4 As shown, the lifting mechanism 200 includes a support sleeve 210, a support rod 220 and a power device 230. The support rod 220 is movably raised and lowered through the support sleeve 210, and the power device 230 is used to drive the support rod 220 to vertically rise and fall. The power device 230 can be installed inside the support sleeve 210 or outside the support sleeve 210. The power device 230 in this embodiment is installed inside the support sleeve 210, and the support sleeve 210 can be used to protect the power device 230, and at the same time, the aesthetics of the equipment can be improved. The locking mechanism 300 is installed on the support sleeve 210, referring to Figure 6 As shown, the locking mechanism 300 includes a locking tongue 320, a driving member 330 and a limiting assembly, wherein the driving member 330 is used to drive the locking tongue 320 to move in a direction close to the support rod 220, and the limiting assembly is used to limit the locking tongue 320 from moving in a direction close to the support rod 220. From bottom to top in the vertical direction, the support rod 220 has an initial position, a set position and a stroke end position in sequence; the support rod 220 is provided with a slot 221, and when the support rod 220 rises from the initial position to the set position, the locking tongue 320 is inserted into the slot 221 to limit the support rod 220 from falling; when the support rod 220 rises to the stroke end position, the limiting assembly abuts against the locking tongue 320 to limit the movement of the locking tongue 320, so that the support rod 220 can fall to the initial position relative to the support sleeve 210. The trolley cab of the embodiment of the present invention is provided with a locking mechanism 300 to limit the jacking mechanism 200, which can ensure that the support rod 220 of the jacking mechanism 200 can be automatically locked and limited when moving to the set position. At the same time, the support rod 220 can switch between the initial position, the set position and the end position of the stroke without manual operation, and can switch automatically, which greatly improves the convenience of operation and the degree of automation of the trolley cab.

[0046] In an embodiment of the present invention, the locking mechanism 300 includes a housing 310, the housing 310 is provided with a third mounting shaft 314, the locking tongue 320 is provided with a strip hole 323, and the length extension direction of the strip hole 323 is the radial direction of the support rod 220; the third mounting shaft 314 is passed through the strip hole 323 to guide the sliding of the locking tongue 320, and at the same time, the third mounting shaft 314 is passed through the strip hole 323, which also limits the end position of the travel of the locking tongue 320. The card slot 221 is provided on the outer surface of the support rod 220, and the locking tongue 320 can slide along the radial direction of the support rod 220 to be partially inserted into the card slot 221. Specifically, refer to Figure 5 , Figure 8 As shown, the slot 221 is a wedge-shaped slot, the top side wall of the slot 221 is a horizontal surface, and the bottom side wall of the slot 221 is an inclined surface; Figure 6 , Figure 8 As shown, a wedge block 322 is installed at the first end of the locking tongue 320 in the length direction corresponding to the locking slot 221, and a roller is installed on the side of the wedge block 322 facing the inclined surface. Figure 7 The support rod 220 is shown in an initial position. Figure 8 The support rod 220 is shown in a set position. Fig. 9 The support rod 220 shown is at the end position of the stroke. When the support rod 220 enters the set position from the initial position, the horizontal surface of the wedge block 322 abuts against the top side wall of the slot 221. At this time, the wedge block 322 can prevent the support rod 220 from descending. Since the bottom side wall of the slot 221 is an inclined surface, and a roller is installed on the side of the wedge block 322 facing the inclined surface, the support rod 220 can easily move upward from the set position to the end position of the stroke.

[0047] In the embodiments of the present invention, referring to Figure 6 As shown, the driving member 330 is installed at the second end of the length direction of the lock tongue 320, and the two ends of the driving member 330 are respectively against the lock tongue 320 and the housing 310. Specifically, the driving member 330 is a spring, and the housing 310 is provided with a stopper 315 protruding from its surface, and the two ends of the driving member 330 are respectively against the stopper 315 and the second end of the length direction of the lock tongue 320, and the driving member 330 is used to drive the lock tongue 320 to move toward the direction close to the support rod 220.

[0048] In the embodiment of the present invention, the limit assembly includes a buckle rod 340, the buckle rod 340 is provided with a hook groove 341, and the lock tongue 320 is provided with a radially protruding limit block 321; when the support rod 220 is at the end position of the stroke, the limit block 321 is located in the hook groove 341. Figure 6 As shown, the limit block 321 is provided with a first plane 3211 on the side facing the support rod 220, and a first inclined surface 3212 is provided on the side facing away from the support rod 220; the first end of the snap rod 340 in the length direction is provided with a second inclined surface 3411, and the groove wall of the hook groove 341 close to the support rod 220 is provided with a second plane 3412; only when the first plane 3211 and the second plane 3412 are against each other, can the snap rod 340 limit the movement of the lock tongue 320 in the direction close to the support rod 220.

[0049] In the embodiment of the present invention, the locking mechanism 300 includes a housing 310, the housing 310 is provided with a first mounting shaft 311, the middle part of the buckle rod 340 is sleeved on the first mounting shaft 311, and can rotate around the first mounting shaft 311; the hook groove 341 is provided at the first end of the buckle rod 340 in the length direction, and the second end of the buckle rod 340 in the length direction is connected to the housing 310 through an elastic member 350, and the elastic member 350 is used to drive the hook groove 341 to rotate in the direction close to the lock tongue 320. Specifically, the elastic member 350 is preferably a spring, and the length extension direction of the elastic member 350 is perpendicular to the length extension direction of the driving member 330. Figure 6As shown, the shell 310 is also provided with a second mounting shaft 312, and the limiting assembly also includes a trigger rod 360, the middle part of which is sleeved on the second mounting shaft 312 and can rotate around the second mounting shaft 312; the first end of the trigger rod 360 in the length direction extends out of the shell 310 to contact the support rod 220, and the second end of the trigger rod 360 in the length direction abuts against the latch rod 340; the trigger rod 360 cooperates with the support rod 220 to drive the hook groove 341 of the latch rod 340 to rotate in a direction away from the lock tongue 320; the first end of the trigger rod 360 in the length direction is also provided with a roller.

[0050] In the embodiment of the present invention, the housing 310 is further provided with a limit shaft 313, which can abut against the trigger rod 360 to limit the rotation of the trigger rod 360; the outer peripheral wall of the support rod 220 is provided with a first slide groove 222 that is recessed inward; when the support rod 220 is at the set position and the end position of the stroke, the first end of the trigger rod 360 in the length direction is located in the first slide groove 222, and the trigger rod 360 abuts against the limit shaft 313. Specifically, Figure 5 For example, Figure 5 The elastic member 350 is shown in a stretched state, at which time the elastic member 350 is used to drive the second end of the latch rod 340 in the length direction to rotate downward in a clockwise direction, thereby causing the hook groove 341 at the first end of the latch rod 340 in the length direction to rotate toward the direction close to the lock tongue 320; the second end of the detent rod 360 in the length direction is tilted upward and abuts against the second end of the latch rod 340 in the length direction. Therefore, when the second end of the latch rod 340 in the length direction tends to rotate downward in a clockwise direction, the latch rod 340 will push the second end of the detent rod 360 in the length direction to rotate synchronously downward in a clockwise direction, thereby driving the first end of the detent rod 360 in the length direction upward. However, due to the existence of the limit shaft 313, the first end of the detent rod 360 in the length direction cannot rotate upward in a clockwise direction at this time. Figure 5 The locking mechanism 300 shown in the figure is in a stationary state, at which time the first end of the length direction of the buckle rod 340 and the first end of the length direction of the buckle rod 360 are both in a horizontal state, and the maximum position of the clockwise rotation of the buckle rod 340 is as shown in FIG. Figure 5 The horizontal state shown.

[0051] It should be understood that a roller is also installed at the first end of the push rod 360 in the length direction. When the push rod 360 is in a horizontal state, the roller at the first end of the push rod 360 in the length direction contacts the bottom surface of the first slide groove 222. That is, only when the first end of the push rod 360 in the length direction is located in the first slide groove 222, the push rod 360 can be in a horizontal state.

[0052] In the embodiment of the present invention, the outer peripheral wall of the support rod 220 is further provided with a top block 223 protruding from its surface, and the top block 223 is arranged below the slot 221; when the support rod 220 is at the end position of the stroke, the wedge block 322 abuts against the top block 223. The working principle of the locking mechanism 300 of the embodiment of the present invention is as follows:

[0053] 1. When the support rod 220 is in the initial position, refer to Figure 7 As shown, at this time, the first end of the length direction of the detent rod 360 is not located in the first slide groove 222, and the first end of the length direction of the detent rod 360 is against the outer surface of the support rod 220 above the first slide groove 222. In order to facilitate the first end of the length direction of the detent rod 360 to slide into and out of the first slide groove 222, Figure 5 As shown, a chamfer 2221 is provided at the top of the first slide groove 222; it can be known from the above that only when the first end of the toggle rod 360 in the length direction is located in the first slide groove 222, the toggle rod 360 can be in a horizontal state, so when the first end of the toggle rod 360 in the length direction slides out of the first slide groove 222 upward, the toggle rod 360 will be forced to rotate around the second mounting shaft 312, and the limit shaft 313 limits the first end of the toggle rod 360 in the length direction from rotating clockwise upward, so the toggle rod 360 can only rotate counterclockwise, from Figure 6 The horizontal position shown is rotated to Figure 7 When the button lever 360 is rotated to Figure 7 When the lock body 320 is in the position shown, the second end of the detent rod 360 in the length direction will push the second end of the latch rod 340 in the length direction to rotate counterclockwise upward by a certain angle, thereby further stretching the elastic member 350, causing the hook groove 341 at the first end of the latch rod 340 in the length direction to rotate a certain angle in the direction away from the lock tongue 320, causing the limit block 321 of the lock tongue 320 to disengage from the hook groove 341; when the limit block 321 of the lock tongue 320 disengages from the hook groove 341, the lock tongue 320 will slide a certain distance toward the direction of the support rod 220 under the action of the driving member 330, so that even if the latch rod 340 is reset to the horizontal position at this time, the hook groove 341 cannot continue to hook the limit block 321.

[0054] Reference Figure 5As shown, the outer peripheral wall of the support rod 220 is provided with a second slide groove 224, and the clamping groove 221 is arranged at the groove bottom of the second slide groove 224; the second slide groove 224 can ensure that when the limit block 321 of the lock tongue 320 is separated from the hook groove 341, the lock tongue 320 can slide a certain distance toward the direction of the support rod 220 under the action of the driving member 330, so that even if the buckle rod 340 is reset to the horizontal position at this time, the hook groove 341 cannot continue to hook the limit block 321. The first slide groove 222 and the second slide groove 224 are arranged in parallel, and there is no obvious dividing line between the first slide groove 222 and the second slide groove 224, which can reduce the processing difficulty and thus reduce the processing cost.

[0055] 2. When the support rod 220 is in the set position, refer to Figure 8 As shown; when the height of the ceiling 130 needs to be adjusted upward, the support rod 220 will switch from the initial position to the set position. During the process of switching the support rod 220 from the initial position to the set position, when the second end of the detent rod 360 in the length direction slides into the first sliding groove 222, the detent rod 360 will return to the horizontal position, and the buckle rod 340 will also return to the horizontal position. However, since the limit block 321 of the lock tongue 320 is disengaged from the hook groove 341, the lock tongue 320 has slid a certain distance toward the direction of the support rod 220 under the action of the driving member 330. Therefore, the buckle rod 340 cannot hook the lock tongue 320 at this time, and the wedge block 322 at the first end of the lock tongue 320 in the length direction will continue to contact the surface of the support rod 220 until the support rod 220 moves to the set position, the slot 221 is aligned with the lock tongue 320, and the wedge block 322 is inserted into the slot 221.

[0056] 3. When the support rod 220 is at the end position of the stroke, refer to Fig. 9 As shown; when it is necessary to retract the ceiling 130 downward, the support rod 220 will first switch from the set position to the end position of the stroke, and then switch from the end position of the stroke to the initial position, that is, the support rod 220 will first move upward to the set height, and then descend. As can be seen from the above, a top block 223 is provided below the slot 221, and the top block 223 protrudes from the outer surface of the support rod 220, and when the support rod 220 is at the end position of the stroke, the first end of the detent rod 360 in the length direction is still located in the first slide groove 222, so when the lock tongue 320 and the top block 223 are against each other, the limit block 321 of the lock tongue 320 will be pushed into the hook groove 341, and the lock tongue 320 is out of contact with the support rod 220, so the support rod 220 can smoothly return to the initial position from the end position of the stroke. In order to facilitate the wedge block 322 to slide out of the slot 221 to the top of the top block 223, refer to Figure 5 As shown, the connection between the slot 221 and the top block 223 is transitioned by an inclined surface or an arc surface.

[0057] In an embodiment of the present invention, the locking mechanism 300 is detachably connected to the support sleeve 210, for example, by fasteners such as bolts; the support rod 220 is slidably arranged in the support sleeve 210, and a through hole penetrating the support sleeve 210 is arranged on the side wall of the support sleeve 210, and the locking tongue 320 and the detent rod 360 of the locking mechanism 300 can partially pass through the through hole. By detachably connecting the locking mechanism 300 to the support sleeve 210, the difficulty of replacing and maintaining the locking mechanism 300 can be effectively reduced.

[0058] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification.

[0059] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A trolley cab, characterized in that: include: The frame, including the console and seats; A lifting mechanism is installed on the frame; a ceiling is installed on the top of the lifting mechanism; the lifting mechanism includes a support sleeve, a support rod and a power device, the support rod is movably lifted and lowered through the support sleeve, and the power device is used to drive the support rod to vertically lift; From bottom to top along the vertical direction, the support rod has an initial position, a set position and a stroke end position in sequence; A grille window, the bottom of which is hinged to the control console and the top of which is slidably mounted on the ceiling; A locking mechanism is installed on the support sleeve; the locking mechanism includes a locking tongue, a driving member and a limiting assembly, the driving member is used to drive the locking tongue to move in a direction close to the support rod, and the limiting assembly is used to limit the movement of the locking tongue in a direction close to the support rod; the support rod is provided with a slot, and when the support rod rises from the initial position to the set position, the locking tongue is inserted into the slot to limit the support rod from descending; when the support rod rises to the end position of the stroke, the limiting assembly abuts against the locking tongue to limit the movement of the locking tongue, so that the support rod can descend to the initial position relative to the support sleeve.

2. The trolley cab according to claim 1, characterized in that: The limiting assembly comprises a buckle rod, the buckle rod is provided with a hook groove, and the locking tongue is provided with a radially protruding limiting block; when the support rod is at the end position of the stroke, the limiting block is located in the hook groove.

3. The trolley cab according to claim 2, characterized in that: The limit block is provided with a first plane on one side facing the support rod, and a first inclined surface on the side facing away from the support rod; a second inclined surface is provided on the first end of the buckle rod in the length direction, and a second plane is provided on the groove wall of the hook groove close to the support rod; When the first plane abuts against the second plane, the buckle rod can limit the movement of the locking tongue in a direction close to the supporting rod.

4. The trolley cab according to claim 2, characterized in that: The locking mechanism includes a shell, the shell is provided with a first mounting shaft, the middle part of the buckle rod is sleeved on the first mounting shaft and can rotate around the first mounting shaft; the hook groove is arranged at the first end of the buckle rod in the length direction, and the second end of the buckle rod in the length direction is connected to the shell through an elastic member, and the elastic member is used to drive the hook groove to rotate in a direction close to the lock tongue.

5. The trolley cab according to claim 4, characterized in that: The shell is also provided with a second mounting shaft, and the limiting assembly also includes a detent rod, the middle portion of which is sleeved on the second mounting shaft and can rotate around the second mounting shaft; the first end of the detent rod in the length direction extends out of the shell to contact the support rod, and the second end of the detent rod in the length direction abuts against the latch rod; the detent rod cooperates with the support rod to drive the hook groove of the latch rod to rotate in a direction away from the lock tongue.

6. The trolley cab according to claim 5, characterized in that: The housing is also provided with a limiting shaft, and the limiting shaft can abut against the detent rod to limit the rotation of the detent rod; the outer peripheral wall of the support rod is provided with a first sliding groove that is concave inwards; When the support rod is at the set position and the stroke end position, the first end of the detent rod in the length direction is located in the first sliding groove, and the detent rod is against the limit shaft.

7. The trolley cab according to claim 1, characterized in that: The locking mechanism includes a shell, the shell is provided with a third mounting shaft, the lock tongue is provided with a strip hole, the length extension direction of the strip hole is the radial direction of the support rod; the third mounting shaft is passed through the strip hole to guide the lock tongue for sliding.

8. The trolley cab according to claim 7, characterized in that: The slot is a wedge-shaped slot, the top side wall of the slot is a horizontal plane, and the bottom side wall of the slot is an inclined plane; a wedge block is installed at the first end of the lock tongue in the length direction corresponding to the slot, and a roller is installed on the side of the wedge block facing the inclined plane; the driving member is installed at the second end of the lock tongue in the length direction, and the two ends of the driving member are respectively against the lock tongue and the shell.

9. The trolley cab according to claim 8, characterized in that: The outer peripheral wall of the support rod is provided with a top block protruding from the surface thereof, and the top block is arranged below the clamping slot; When the support rod is at the end position of the stroke, the wedge block abuts against the top block.

10. The trolley cab according to claim 1, characterized in that: The outer peripheral wall of the support rod is provided with a second sliding groove, and the clamping groove is arranged at the groove bottom of the second sliding groove.

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