Counterweight mechanism of lorry-mounted crane

Abstract

The utility model discloses a lorry-mounted crane counterweight mechanism which comprises a supporting arm, a limiting installation block and a limiting installation groove are installed in an inserted mode, first driving tooth grooves are formed in the two sides of a counterweight block, a first driving gear and the first driving tooth grooves are installed in a meshed mode, and a recycling insertion block is fixedly connected to the center of the front side of the inner wall of a storage box. According to the lorry-mounted crane counterweight mechanism, double-group counterweight can be conducted through the counterweight box and the storage box, the storage box can be driven to be adjusted in a lifting mode through a second driving tooth groove, a third servo motor and a second driving gear, and the storage box is matched with the counterweight box in position; therefore, the balancing weight can be driven by the first servo motor, the first driving tooth groove and the first driving gear to conduct automatic increase and decrease adjustment, the balancing weight, the weight box and the storage box can be fixedly and stably installed through the limiting installation groove, the limiting installation block, the recycling insertion groove and the recycling insertion block, use is more convenient, adjustment flexibility is better, and safety is higher.

Description

TECHNICAL FIELD

[0001] The utility model relates to a crane technical field, concretely is a lorry-mounted crane counterweight mechanism. BACKGROUND

[0002] At present, lorry-mounted cranes are divided into straight-arm lorry-mounted cranes and folding-arm lorry-mounted cranes, and the lorry-mounted crane is a kind of hoisting machinery with the hoisting operation part installed on a truck, and the lorry-mounted crane needs to place counterweights at corresponding positions during operation, and generally has fixed counterweight type, telescopic type and added counterweight type.

[0003] The existing built-in telescopic counterweight mechanism CN200820148871.8 of the lorry-mounted crane effectively improves the stability of the whole machine, especially the stability of the large-tonnage lorry-mounted crane, so that the lorry-mounted crane has more choices when matching the chassis, has low processing difficulty, is convenient to operate, saves space, and is the development direction of the counterweight scheme of the large-tonnage lorry-mounted crane, but has the following deficiencies: the existing equipment cannot automatically increase or decrease the counterweight, is inconvenient to operate, has poor safety, and is inconvenient to use, so that a lorry-mounted crane counterweight mechanism is needed to solve the above problems. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing a lorry-mounted crane counterweight mechanism to solve the problems that the built-in telescopic counterweight mechanism of the lorry-mounted crane mentioned in the above background technology cannot automatically increase or decrease the counterweight, is inconvenient to operate, has poor safety, and is inconvenient to use.

[0005] In order to achieve the above object, the utility model provides the following technical scheme: A lorry crane counterweight mechanism, including support arm, one end of support arm is installed with rotary table, and the rotary table lower extreme is installed with car body, the inner wall of support arm is installed with hydraulic cylinder, and the outer wall of hydraulic cylinder is installed with extension block, extension block is installed in the inner wall of support arm and is inserted and combined, and one end of support arm is fixedly connected with counterweight box, the front side of counterweight box upper end is installed with second servo motor, and the output of second servo motor is installed with turnover shaft, one side of turnover shaft is fixedly connected with closed cover plate, the front and back sides of car body upper end are provided with shrinkage groove, and the upper end of both sides of shrinkage groove inner wall is embedded and installed with third servo motor, the output of third servo motor is installed with second drive gear, the inner wall of shrinkage groove is inserted and combined with storage box, and the both sides of storage box are provided with second drive gear slot, the second drive gear is meshed with second drive gear slot, the both sides of the inner wall of storage box and counterweight box are embedded and installed with first servo motor, and the output of first servo motor is installed with first drive gear, the both sides of the inner wall of counterweight box are fixedly connected with limiting mounting block, and the inner wall of counterweight box is inserted and combined with counterweight block, the rear side of counterweight block is provided with limiting installation groove, and the front side center position of counterweight block is provided with recycling slot, the limiting mounting block is inserted and combined with limiting installation groove, the both sides of counterweight block are provided with first drive gear slot, the first drive gear is meshed with first drive gear slot, and the front side center position of the inner wall of storage box is fixedly connected with recycling block.

[0006] Preferably, the counterweight box is telescopically connected with the support arm through the extension block and the hydraulic cylinder.

[0007] Preferably, the counterweight box and the storage box are symmetrically distributed in two groups, and the closed cover plate is connected with the counterweight box through the second servo motor and the turnover shaft in a flip-open and close mode.

[0008] Preferably, the outer wall of the counterweight block is a rubber wrapping structure, and the counterweight block is meshed with the counterweight box and the storage box through the first drive gear slot and the first drive gear in a forward and backward pulling mode.

[0009] Preferably, the counterweight block is positioned and inserted and spliced with the counterweight box through the limiting installation groove and the limiting mounting block, and the counterweight block is buckled and spliced with the storage box through the recycling slot and the recycling block.

[0010] Preferably, the storage box is meshed and connected with the shrinkage groove in a lifting mode through the second drive gear slot and the shrinkage groove, and the position of the storage box after being lifted is horizontally distributed with the position of the counterweight box, and the counterweight box and the storage box are both side opening mechanisms.

[0011] Compared with the prior art, the beneficial effects of the utility model are: the counterweight mechanism of the truck-mounted crane can realize double-group counterweight through the counterweight box and the storage box, and the storage box can be lifted and adjusted through the second driving gear groove, the third servo motor and the second driving gear, and the position of the counterweight box is matched, so that the counterweight block can be automatically increased or decreased through the first servo motor, the first driving gear groove and the first driving gear, and the counterweight block can be fixedly installed and stabilized with the counterweight box and the storage box through the limiting installation groove, the limiting installation block, the recycling insertion groove and the recycling insertion block, which is more convenient to use, has better adjustment flexibility and is safer. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a front view of the utility model of a truck-mounted crane counterweight mechanism.

[0013] Figure 2 It is a schematic diagram of the internal structure of the utility model of a truck-mounted crane counterweight mechanism.

[0014] Figure 3 It is a truck-mounted crane counterweight mechanism of the utility model Figure 2 The enlarged view of A.

[0015] Figure 4 It is a truck-mounted crane counterweight mechanism of the utility model Figure 2 The enlarged view of B.

[0016] Figure 5 It is a truck-mounted crane counterweight mechanism of the utility model Figure 2 The enlarged view of C.

[0017] Figure 6 It is a truck-mounted crane counterweight mechanism of the utility model Figure 2 The enlarged view of D.

[0018] In the figure: 1, support arm, 2, counterweight box, 3, closing cover plate, 4, turntable, 5, car body, 6, counterweight block, 7, extension block, 8, hydraulic cylinder, 9, storage box, 10, first servo motor, 11, first driving gear groove, 12, first driving gear, 13, second servo motor, 14, turnover shaft, 15, limiting installation groove, 16, limiting installation block, 17, recycling insertion groove, 18, recycling insertion block, 19, second driving gear groove, 20, contraction groove, 21, third servo motor, 22, second driving gear. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0020] Please refer to Figures 1-6 The utility model provides a kind of technical scheme: a truck crane counterweight mechanism, including support arm 1, counterweight box 2, enclosed cover plate 3, carousel 4, car body 5, counterweight block 6, extension block 7, hydraulic cylinder 8, storage box 9, first servo motor 10, first drive gear slot 11, first drive gear 12, second servo motor 13, turnover shaft 14, limit installation groove 15, limit installation block 16, recycling slot 17, recycling block 18, second drive gear slot 19, contraction groove 20, third servo motor 21 and second drive gear 22, support arm 1 one end is equipped with carousel 4, and carousel 4 lower end is equipped with car body 5, support arm 1 inner wall is equipped with hydraulic cylinder 8, and hydraulic cylinder 8 outer wall is equipped with extension block 7, extension block 7 is slidably inserted in support arm 1, and support arm 1 one end is fixedly connected with counterweight box 2, counterweight box 2 is connected with support arm 1 by extension block 7, hydraulic cylinder 8 and is in telescopic activity, so that counterweight box 2 is conveniently telescopic adjusted, and it is convenient to adjust gravity center, and adaptability is better.

[0021] Counterweight box 2 and storage box 9 are symmetrically distributed, enclosed cover plate 3 is connected with counterweight box 2 by second servo motor 13 and turnover shaft 14 and is in flip open-close connection, so that counterweight box 2 and storage box 9 can be two groups of counterweight, and the adjustment range is larger, and the sealing of counterweight box 2 is better, avoids that counterweight block 6 falls, second servo motor 13 is installed on the upper front side of counterweight box 2, and turnover shaft 14 is installed on the output end of second servo motor 13, enclosed cover plate 3 is fixedly connected on one side of turnover shaft 14, contraction groove 20 is formed on the upper front and rear sides of car body 5, third servo motor 21 is inlaidly installed on the inner wall of both sides of contraction groove 20, second drive gear 22 is installed on the output end of third servo motor 21, storage box 9 is insertedly installed in the inner wall of contraction groove 20, second drive gear slot 19 is formed on both sides of storage box 9, storage box 9 is connected with contraction groove 20 by second drive gear slot 19 and contraction groove 20 and is in meshing lifting connection, and the position of the rising of storage box 9 is flushly distributed with the position of counterweight box 2, and counterweight box 2 and storage box 9 are both side opening mechanisms, so that storage box 9 is conveniently lifted and adjusted, and it is convenient to be flushly distributed with counterweight box 2, and the up and down material is more accurate.

[0022] The second driving gear 22 is engagedly installed with the second driving gear slot 19, the first servo motor 10 is embeddedly installed on the inner wall of the storage box 9 and the counterweight box 2, the first driving gear 12 is installed at the output end of the first servo motor 10, the limiting mounting block 16 is fixedly connected to the inner wall of the counterweight box 2, the counterweight block 6 is insertedly installed on the inner wall of the counterweight box 2, the outer wall of the counterweight block 6 is rubber-wrapped, and the counterweight block 6 is engagedly pulled back and forth with the counterweight box 2 and the storage box 9 through the first driving gear slot 11 and the first driving gear 12, so that the counterweight block 6 can be effectively elastically damped and engagedly pulled and moved, and the feeding and discharging are convenient and stable.

[0023] The counterweight block 6 is positioned and insertedly spliced with the counterweight box 2 through the limiting mounting slot 15 and the limiting mounting block 16, and is buckled and spliced with the storage box 9 through the recycling insertion slot 17 and the recycling insertion block 18, so that the counterweight block 6 is stably installed with the counterweight box 2 and the storage box 9, the feeding and discharging deviation is avoided, the limiting mounting slot 15 is formed on the rear side of the counterweight block 6, the recycling insertion slot 17 is formed on the front side of the counterweight block 6, the limiting mounting block 16 is insertedly installed with the limiting mounting slot 15, the first driving gear slot 11 is formed on the two sides of the counterweight block 6, the first driving gear 12 is engagedly installed with the first driving gear slot 11, and the recycling insertion block 18 is fixedly connected to the front side center position of the inner wall of the storage box 9.

[0024] Working principle: when the counterweight mechanism of the truck-mounted crane is used, the device is combined and installed first, when the counterweight is needed, the counterweight box 2 can be moved to the middle position, then the closed cover plate 3 is turned over and opened through the second servo motor 13 and the turnover shaft 14, then the storage box 9 is engagedly lifted up through the second driving gear slot 19, the third servo motor 21 and the second driving gear 22, so that it is flush with the position of the counterweight box 2, then the counterweight block 6 is moved into the counterweight box 2 through the first servo motor 10, the first driving gear slot 11 and the first driving gear 12, and is clamped and fixed through the limiting mounting slot 15 and the limiting mounting block 16, then the closed cover plate 3 is turned over and closed, then the storage box 9 is lowered and contracted, when the counterweight block 6 needs to be recycled, it can be quickly engagedly pulled and recycled through the first servo motor 10, the first driving gear slot 11 and the first driving gear 12, when the counterweight gravity center needs to be adjusted, the extension block 7 and the hydraulic cylinder 8 are used for telescopic adjustment, which is the use process of the counterweight mechanism of the truck-mounted crane.

[0025] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A counterweight mechanism of a lorry-mounted crane, comprising a support arm (1), one end of which is provided with a rotary table (4), and the lower end of the rotary table (4) is provided with a vehicle body (5), characterized in that: The inner wall of the support arm (1) is provided with a hydraulic cylinder (8), and the outer wall of the hydraulic cylinder (8) is provided with an extension block (7) in a sleeved manner, the extension block (7) is slidably inserted into the inner wall of the support arm (1), and one end of the support arm (1) is fixedly connected with a counterweight box (2), the upper front side of the counterweight box (2) is provided with a second servo motor (13), and the output end of the second servo motor (13) is provided with a turnover shaft (14), one side of the turnover shaft (14) is fixedly connected with a closed cover plate (3), the upper front and rear sides of the vehicle body (5) are provided with a contraction groove (20), and the upper ends of the two sides of the inner wall of the contraction groove (20) are embeddedly provided with a third servo motor (21), the output end of the third servo motor (21) is provided with a second drive gear (22), the inner wall of the contraction groove (20) is provided with a storage box (9) in a plugged manner, and the two sides of the storage box (9) are provided with a second drive tooth groove (19), the second drive gear (22) is in meshing connection with the second drive tooth groove (19), the inner wall of the storage box (9) and the counterweight box (2) is embeddedly provided with a first servo motor (10), and the output end of the first servo motor (10) is provided with a first drive gear (12), the inner wall of the counterweight box (2) is fixedly connected with a limiting block (16), and the inner wall of the counterweight box (2) is provided with a counterweight block (6) in a plugged manner, the rear side of the counterweight block (6) is provided with a limiting groove (15), and the front side of the counterweight block (6) is provided with a recycling slot (17) at the central position, the limiting block (16) is in plugged connection with the limiting groove (15), the two sides of the counterweight block (6) are provided with a first drive tooth groove (11), the first drive gear (12) is in meshing connection with the first drive tooth groove (11), and the inner wall of the storage box (9) is fixedly connected with a recycling block (18) at the central position of the front side.

2. A counterweight mechanism for a lorry-mounted crane according to claim 1, characterised in that: The counterweight box (2) is in telescopic connection with the support arm (1) through the extension block (7) and the hydraulic cylinder (8).

3. A counterweight mechanism for a lorry-mounted crane according to claim 2, characterised in that: The counterweight box (2) and the storage box (9) are symmetrically distributed, the closed cover plate (3) is in flip opening and closing connection with the counterweight box (2) through the second servo motor (13) and the turnover shaft (14).

4. A counterweight mechanism for a lorry-mounted crane according to claim 3, characterised in that: The outer wall of the counterweight block (6) is wrapped with rubber, and the counterweight block (6) is in meshing forward and backward pulling connection with the counterweight box (2) and the storage box (9) through the first drive tooth groove (11) and the first drive gear (12).

5. A counterweight mechanism for a lorry-mounted crane according to claim 4, characterised in that: The counterweight block (6) is in positioning plugged splicing connection with the counterweight box (2) through the limiting groove (15) and the limiting block (16), and is in buckling splicing connection with the storage box (9) through the recycling slot (17) and the recycling block (18).

6. A counterweight mechanism for a lorry-mounted crane according to claim 5, characterised in that: The storage box (9) is in meshing lifting connection with the contraction groove (20) through the second drive tooth groove (19) and the contraction groove (20), and the position of the storage box (9) rising is flush with the position of the counterweight box (2), and the counterweight box (2) and the storage box (9) are both side opening mechanisms.

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