Special maintenance trolley

Abstract

The utility model relates to the technical field of equipment maintenance and assembly of large-diameter travelling wheels and bearings in limited space, and particularly discloses a special maintenance trolley which comprises a tray and a workbench, the tray is installed on the workbench, the workbench is installed on a base through a scissor lifting mechanism, and the middle of a pull rod of the scissor lifting mechanism is connected with a chain block power mechanism. A transmission box of the chain block power mechanism is installed on an installation base, a handle frame is installed on the upper portion of the installation base, a hand chain sliding frame is installed on the handle frame, and a hand chain is supported on the hand chain sliding frame to slide. The chain block is adopted to control the shear fork lifting mechanism to act, then lifting of the workbench is controlled, pure mechanical transmission is achieved, operation is easy, carrying is convenient, geographical limitation is avoided, maintenance difficulty and safety risks of operators are reduced, and application and popularization value is achieved in installation and maintenance of large-scale equipment large-weight parts in narrow spaces. The device is simple in structure, suitable for installation of different parts, high in applicability and accurate in positioning, and assembly of the parts is simpler and more efficient.

Description

TECHNICAL FIELD

[0001] The utility model relates to equipment maintenance and large diameter walking wheel and bearing assembly technical field in restricted space, concretely relates to a special maintenance trolley. BACKGROUND

[0002] The equipment maintenance and large diameter walking wheel and bearing assembly equipment in restricted space are mainly for the maintenance of the press machine, the press machine is a large forging and pressing equipment in manufacturing industry, is often widely used in the automobile manufacturing field, since the moving workbench walking wheel and bearing often meet the replacement situation of wearing in the production process, however the installed walking wheel and bearing diameter and weight are all larger, often need the assistance of large hoisting equipment and the cooperation of 3-4 people to complete the maintenance operation, the maintenance difficulty is high, and the safety risk of operation personnel is big.

[0003] Therefore, a special maintenance trolley with simple structure and convenient operation is needed to solve the problems of high maintenance difficulty and big safety risk of operation personnel in the installation of large diameter walking wheel and bearing in narrow restricted space. UTILITY MODEL CONTENTS

[0004] In view of the problems in the prior art, the utility model aims at providing a special maintenance trolley.

[0005] The utility model solves the technical problems by adopting the technical scheme that a special maintenance trolley, including tray and workbench, the tray is installed on the workbench, the workbench is installed on the base through the scissor lifting mechanism, the middle part of the pull rod of the scissor lifting mechanism is connected with the chain fall power mechanism, the transmission box of the chain fall power mechanism is installed on the mounting seat, the upper part of the mounting seat is installed with the handle frame, the handle frame is installed with the hand chain sliding frame, and the hand chain sliding frame supports the hand chain sliding.

[0006] Preferably, the tray is placed with spare parts, the tray bottom is fixedly connected with the tray support, the tray support is inserted into the positioning placement hole, a plurality of positioning placement holes are arranged in the middle part of the workbench.

[0007] Preferably, the scissor lifting mechanism is provided with two groups of support arms one and two groups of support arms two that are hingedly connected with each other, the middle parts of the support arms one and two are hingedly connected through the pin shaft, the upper parts of the support arms one are hingedly connected with the bottom of the workbench, and the lower parts of the support arms two are hingedly connected with the upper part of the base.

[0008] Preferably, the lower part of the support arm one is rotationally connected with the lower sliding block, the lower sliding block is limitingly slid in the lower sliding groove, the pull rod is connected between the two lower sliding blocks, the lower sliding groove is arranged on the upper part of the base, the upper part of the support arm two is rotationally connected with the upper sliding block, the upper sliding block is limitingly slid in the upper sliding groove, and the upper sliding groove is arranged on the bottom of the workbench.

[0009] Preferably, the inverted chain power mechanism is provided with a hand chain and a lifting chain, the lifting chain is installed in the transmission box, the outer end of the lifting chain is provided with a lifting hook, the lifting hook is connected to the middle part of the pull rod, the lifting chain pulls the pull rod to move and controls the movement of the lower sliding block in the lower sliding groove.

[0010] Preferably, the hand chain is installed in the transmission box, and the outer side of the hand chain passes through the "U"-shaped groove on the hand chain sliding frame.

[0011] Preferably, the transmission box is provided with a fixed hook outside, the fixed hook passes through the strip-shaped hole of the mounting seat, and a fixed rod passes through the fixed hook, so that the fixed rod transversely positions the transmission box on the mounting seat.

[0012] Preferably, the upper part of the base is provided with four equal-height columns, and the upper part of the equal-height column supports the bottom of the falling workbench.

[0013] Preferably, the lower part of the base is provided with four rollers.

[0014] The utility model has the following beneficial effects:

[0015] The special maintenance trolley designed in the utility model adopts the inverted chain control scissor lifting mechanism to act, and then controls the lifting of the workbench, is pure mechanical transmission, is easy to operate, is convenient to carry, is not restricted by region, reduces the maintenance difficulty and the safety risk of operating personnel, and has popularization and application value in the installation and maintenance of large heavy parts in narrow space of large equipment.

[0016] The special maintenance trolley designed in the utility model adopts the tray to be installed in the plug-in mode, is convenient to select and replace different trays, is suitable for the installation of different parts, is strong in applicability, is convenient to operate, is accurate in positioning, makes the assembly of parts more simple and efficient. DRAWINGS

[0017] Figure 1 It is a structural schematic view of the special maintenance trolley.

[0018] Figure 2 It is a front view of the special maintenance trolley.

[0019] Figure 3 It is a side view of the special maintenance trolley.

[0020] Figure 4 It is a top view of the special maintenance trolley.

[0021] Figure 5 It is a schematic view of the part installation process of the special maintenance trolley.

[0022] Figure 6 It is a schematic view of the free falling state of the special maintenance trolley.

[0023] Figure 7This is a schematic diagram of the special maintenance trolley in its raised and deployed state.

[0024] In the diagram: 1-Tray; 2-Tray support; 3-Workbench; 4-Positioning hole;

[0025] 5-Scissor lift mechanism, 5.1-Support arm one, 5.2-Support arm two, 5.3-Pin, 5.4-Hinge, 5.5-Upper slider, 5.6-Lower slider, 5.7-Upper slide groove, 5.8-Lower slide groove, 5.9-Tie rod;

[0026] 6-Chain hoisting power mechanism, 6.1-Transmission box, 6.2-Mounting base, 6.3-Strip hole, 6.4-Fixed hook, 6.5-Fixed rod, 6.6-Hand chain, 6.7-Hand chain sliding frame, 6.8-Lifting chain, 6.9-Lifting hook;

[0027] 7-Base; 8-Roller; 9-Handle bracket; 10-Equal height column. Detailed Implementation

[0028] The technical solutions of the present utility model will be described in further detail below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0029] like Figures 1-7 As shown, a special maintenance trolley includes a tray 1, a workbench 3, a scissor lift mechanism 5, a chain hoist power mechanism 6, a base 7, and a handle frame 9. The tray 1 is installed on the workbench 3, and parts are placed inside the tray 1. The bottom of the tray 1 is fixedly connected to a tray bracket 2, which is inserted into positioning holes 4. There are multiple positioning holes 4, which are arranged in the middle of the workbench 3. The tray 1 has a crescent-shaped semi-circular box structure, but is not limited to a crescent shape. It varies in size, is used in groups, and is rotatable and detachable. The shape of the tray 1 can be appropriately adjusted according to the shape of the object being installed. It is used to place installation parts such as wheels or bearings. The tray 1 rotates along the central axis of the positioning holes 4. Cylindrical positioning holes 4 are equidistantly arranged in the middle of the workbench 3 for mounting the tray 1.

[0030] The workbench 3 is mounted on the base 7 via a scissor lift mechanism 5. The scissor lift mechanism 5 has two sets of support arms 1 5.1 and two sets of support arms 2 5.2 that are hinged to each other. The middle parts of support arms 1 5.1 and support arms 2 5.2 are hinged by a pin 5.3. The upper part of support arm 1 5.1 is hinged to the bottom of the workbench 3 via a hinge 5.4, and the lower part of support arm 2 5.2 is hinged to the upper part of the base 7 via a hinge 5.4.

[0031] The lower part of the support arm 5.1 is rotatably connected with a lower sliding block 5.6, the lower sliding block 5.6 is limitedly slid in a lower sliding groove 5.8, a pull rod 5.9 is connected between the two lower sliding blocks 5.6, the lower sliding groove 5.8 is arranged on the upper part of the base 7, the upper part of the support arm 5.2 is rotatably connected with an upper sliding block 5.5, the upper sliding block 5.5 is limitedly slid in an upper sliding groove 5.7, the upper sliding groove 5.7 is arranged on the bottom of the workbench 3. The scissor lifting mechanism 5 is connected with the workbench 3 and the base 7, is pulled on the base 7 through the chain fall power mechanism 6, and realizes the lifting action of the workbench 3 in the sliding process.

[0032] The middle part of the pull rod 5.9 of the scissor lifting mechanism 5 is connected with the chain fall power mechanism 6, a transmission box 6.1 of the chain fall power mechanism 6 is installed on a mounting seat 6.2, the mounting seat 6.2 is fixed on the base 7, a handle frame 9 is installed on the upper part of the mounting seat 6.2, a hand chain sliding frame 6.7 is installed on the handle frame 9, and a hand chain 6.6 is slid on the hand chain sliding frame 6.7.

[0033] The chain fall power mechanism 6 adopts an existing manual chain fall structure, the chain fall power mechanism 6 is further provided with the hand chain 6.6 and a hoisting chain 6.8, the hoisting chain 6.8 is installed in the transmission box 6.1, a hoisting hook 6.9 is installed at the outer end of the hoisting chain 6.8, the hoisting hook 6.9 is connected with the middle part of the pull rod 5.9, and the hoisting chain 6.8 pulls the pull rod 5.9 to move and controls the movement of the lower sliding block 5.6 in the lower sliding groove 5.8.

[0034] The hand chain 6.6 is installed in the transmission box 6.1, and the outer side of the hand chain 6.6 passes through a U-shaped groove on the hand chain sliding frame 6.7, so as to be installed and fixed and to be guided in transmission.

[0035] The transmission box 6.1 is externally provided with a fixed hook 6.4, the fixed hook 6.4 passes through a strip-shaped hole 6.3 of the mounting seat 6.2, a fixed rod 6.5 passes through the fixed hook 6.4, the fixed rod 6.5 is blocked on the outer side of the mounting seat 6.2, and the fixed rod 6.5 transversely positions the transmission box 6.1 on the mounting seat 6.2.

[0036] Four equal-height columns 10 are installed on the upper part of the base 7, the equal-height columns 10 support the bottom of the falling workbench 3, and the equal-height columns 10 are used for limiting the minimum lifting height of the trolley.

[0037] Four rollers 8 are installed on the lower part of the base 7 and are used for moving the trolley.

[0038] The working principle of the utility model is as follows:

[0039] The workbench 3 pulls the two-way driving scissor lifting mechanism 5 by the hand chain 6.6, so that the parts placed on the tray 1 move up and down and left and right with the workbench 3, and the workbench 3 replaces manual lifting adjustment during part installation, and is used in the field of installation of large-weight parts with high assembly precision in narrow space, such as installation of moving workbench wheels and bearings of large presses, so that the whole installation process is more convenient and fast.

[0040] The utility model discloses the object of action is as Figure 5 The utility model discloses the object of action is as

[0041] The utility model discloses the object of action is as Figure 6 、 Figure 7 The utility model discloses the object of action is as

[0042] The technical scheme of the special maintenance trolley described in the embodiment has the functions of auxiliary installation and part carrying, can be applied to various equipment installation and maintenance fields, is convenient to operate, accurate in positioning, makes the assembly of parts simpler and more efficient.

[0043] The utility model discloses the object of action is as

[0044] The utility model discloses the object of action is as

Claims

1. A special purpose service car characterized by, The utility model provides a kind of lifting device for workbench, including tray and workbench, the tray is installed on workbench, workbench is installed on base by scissor lifting mechanism, the middle part of pull rod of scissor lifting mechanism is connected to chain fall power mechanism, the transmission box of chain fall power mechanism is installed on mounting seat, handle frame is installed on the upper portion of mounting seat, hand chain slide frame is installed on handle frame, hand chain slide is supported on hand chain slide frame.

2. The mobile service platform of claim 1, wherein, The tray is placed with spare parts, and the tray bracket is fixedly connected to the bottom of the tray. The tray bracket is inserted into the positioning placement hole. The positioning placement hole is provided with a plurality of positioning placement holes arranged in the middle of the workbench.

3. The mobile service platform of claim 1, wherein, The scissor lifting mechanism is provided with two groups of support arms one and two groups of support arms two which are hingedly connected to each other. The middle part of the support arm one and the support arm two is hingedly connected by a pin shaft. The upper part of the support arm one is hingedly connected to the bottom of the workbench. The lower part of the support arm two is hingedly connected to the upper part of the base.

4. The mobile service vehicle of claim 3, wherein, The lower part of the support arm one is rotatably connected to the lower sliding block. The lower sliding block is limitingly slid in the lower sliding groove. The pull rod is connected between the two lower sliding blocks. The lower sliding groove is arranged on the upper part of the base. The upper part of the support arm two is rotatably connected to the upper sliding block. The upper sliding block is limitingly slid in the upper sliding groove. The upper sliding groove is arranged on the bottom of the workbench.

5. The mobile service platform of claim 4, wherein, The chain fall power mechanism is provided with a hand chain and a lifting chain. The lifting chain is installed in the transmission box. The outer end of the lifting chain is installed with a lifting hook. The lifting hook is connected to the middle part of the pull rod. The lifting chain pulls the pull rod to move and controls the movement of the lower sliding block in the lower sliding groove.

6. The mobile service platform of claim 5, wherein, The hand chain is installed in the transmission box. The outer side of the hand chain passes through the "U"-shaped groove on the hand chain slide frame.

7. The mobile service platform of claim 5, wherein, The transmission box is provided with a fixed hook outside. The fixed hook passes through the strip-shaped hole of the mounting seat. The fixed hook is penetrated by a fixed rod. The fixed rod transversely positions the transmission box on the mounting seat.

8. The mobile service platform of claim 1, wherein, The upper part of the base is installed with four equal-height columns. The equal-height columns support the bottom of the falling workbench.

9. The mobile service platform of claim 1, wherein, The lower part of the base is installed with four rollers.

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