CN206749848U - height-adjustable carrying trolley - Google Patents

Abstract

The utility model discloses a height-adjustable load trolley, which comprises a movable platform, a trolley support frame, a hand-held frame, and a front wheel and a rear wheel installed at the bottom of the trolley support frame, the lower end of the hand-held frame and the trolley support frame The fixed connection also includes a scissor mechanism, a screw rod and a rocker. The scissor mechanism is composed of two sets of opposite upper scissor arm mechanisms and two opposite lower scissor arm mechanisms. The upper scissor arm mechanism and the lower scissor mechanism Both are composed of inner and outer scissor arms hinged together, the hinge points of the opposite two sets of inner and outer scissor arms are connected by connecting shafts, the outer scissor arm of the upper scissor arm mechanism is hinged with the inner scissor arm of the lower scissor arm mechanism Together, the inner scissor arm of the upper scissor arm mechanism and the outer scissor arm of the lower scissor arm mechanism are hinged together, and the relative hinge points of the upper scissor arm mechanism and the lower scissor arm are supported by the scissor arm The shafts are connected together. The utility model has the advantages of simple operation, stable lifting, safety and reliability, large bearing capacity, and convenient fault detection and maintenance.

Description

height adjustable load trolley

technical field

The utility model relates to a height-adjustable carrying trolley.

Background technique

At present, with the development of science and technology and the continuous progress of society, designing various machines to reduce people's labor intensity, improve work efficiency, and save labor has become the goal of mechanical engineers' daily work. In industrial production, warehouse management, etc. In the workplace, more and more people are tired of carrying heavy objects by hand, so trolleys have become a good choice for them.

By visiting and observing the height-adjustable load trolleys on the market and online, I learned that all the products on the market rely on hydraulic pumps to control the lifting of the platform, but due to the high cost of hydraulic pumps, they are not suitable for small places such as laboratories, so there is an urgent need Design a simple, low-cost trolley whose platform height can be adjusted within a certain range, so that when simply carrying heavy objects, the height of the trolley table can be adjusted according to the height of the heavy objects, saving time and effort Purpose.

Contents of the invention

The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a height-adjustable carrying trolley, which is easy to operate, stable in lifting, safe and reliable, large in bearing capacity, and convenient in fault detection and maintenance.

The technical solution to realize the purpose of this utility model is: a height-adjustable loading trolley, including a movable platform, a trolley support frame, a hand-held frame, and front wheels and rear wheels installed at the bottom of the trolley support frame. The lower end is fixedly connected with the trolley support frame, and also includes a scissor mechanism, a screw rod and a rocker. Both the upper scissor arm mechanism and the lower scissor arm mechanism are composed of inner and outer scissor arms hinged together. The inner scissor arms are hinged together, the inner scissor arm of the upper scissor arm mechanism is hinged with the outer scissor arm of the lower scissor arm mechanism, and the relative upper scissor arm mechanism and the lower scissor arm have sufficient hinge points Connected together by the support shaft of the scissor arm, the screw rod is rotatably installed on the support shaft of the scissor arm, one of the support shafts of the scissor arm has a nut matched with the screw rod, and the rocker is fixedly installed at the tail end of the screw rod. The upper end of the inner scissor arm of the upper scissor arm mechanism is hinged with the mobile platform, and the upper ends of the outer scissor arm of the two sets of upper scissor arm mechanisms are connected through the top scissor arm support shaft, and the two ends of the top scissor arm support shaft are located at In the chute on both sides of the movable platform, the lower end of the outer scissor arm of the lower scissor arm mechanism is hinged to the trolley bracket, and the lower ends of the inner scissor arm of the two sets of lower scissor arm mechanisms are connected through the scissor arm support shaft at the bottom. The two ends of the scissor arm support shaft at the bottom are located in the slide grooves on both sides of the trolley support.

Further, the front wheels are directional wheels, which are composed of directional wheel brackets and rubber wheels mounted on the directional wheel brackets, and the directional wheel brackets are fixedly connected to the bottom of the trolley support frame.

Further, the rear wheel is a universal wheel, which is composed of a connecting plate, a cylindrical platform, a universal wheel bracket, a brake pad and a rubber wheel. The connecting plate is fixedly installed on the bottom of the trolley support frame, and the connecting plate passes through The cylindrical platform is connected with the universal wheel bracket, and the brake pad is hinged on the universal wheel bracket.

Further, the handrail frame is composed of two standpipes and a handrail, the lower end of the handrail is inserted into the standpipe, and an adjusting bolt is arranged at the connection between the handrail and the vertical rod.

Further, a baffle is provided at the joint between the top scissor arm support shaft and the outer scissor arm, and the baffle is screwed to both ends of the scissor arm support shaft.

Adopting the above-mentioned technical scheme, the utility model has the following beneficial effects: the utility model provides a height-adjustable loading trolley, and the platform lifting of the loading trolley is realized through the transmission structure of the hand-operated scissor screw, avoiding the The products in the product rely on hydraulic pumps to control the lifting of the platform. The problem of high cost reduces the complexity of the process and the degree of economic processing, and reduces the manufacturing cost.

Description of drawings

Fig. 1 is the structural representation of the height-adjustable carrying trolley of the utility model;

Fig. 2 is a connection relationship diagram between the screw mandrel of the present utility model and the support shaft of the scissor arm;

Fig. 3 is the structural representation of the front wheel of the present utility model;

Fig. 4 is a structural schematic diagram of the rear wheel of the present invention.

In the figure, 1. movable platform, 2. baffle plate, 3. scissor mechanism, 4. hand support frame, 5. adjusting bolt, 6. rocker, 7. rear wheel, 8. trolley support frame, 9. front Wheel, 10, connecting shaft, 11, screw mandrel, 12, chute, 13, scissor arm support shaft, 14, directional wheel bracket, 15, rubber wheel, 16, connecting plate, 17, brake pad, 18, universal Wheel bracket.

detailed description

In order to make the content of the utility model more clearly understood, the utility model will be further described in detail below based on specific embodiments and in conjunction with the accompanying drawings.

As shown in Figures 1 and 2, a height-adjustable carrying trolley includes a movable platform 1, a trolley support frame 8, a hand frame 4, and front wheels 9 and rear wheels 7 installed at the bottom of the trolley support frame 8, The lower end of the handrail 4 is fixedly connected with the trolley support frame 8, and also includes a scissor mechanism 3, a screw rod 11 and a rocking bar 6, and the scissor mechanism 3 is composed of two groups of relative upper scissor arm mechanisms and two groups of relative lower The upper scissor arm mechanism and the lower scissor arm mechanism are composed of inner and outer scissor arms hinged together. The outer scissor arm is hinged with the inner scissor arm of the lower scissor arm mechanism, the inner scissor arm of the upper scissor arm mechanism is hinged with the outer scissor arm of the lower scissor arm mechanism, and the opposite upper scissor arm The hinge point of the arm mechanism and the lower scissor arm is connected together by the scissor arm support shaft 13, and the screw mandrel 11 is rotatably installed on the scissor arm support shaft 13, and one of the scissor arm support shafts 13 has a 11 with the nut that cooperates, the rocker 6 is fixedly installed on the tail end of the screw rod 11, the upper end of the inner scissor arm of the upper scissor arm mechanism is hinged with the mobile platform 1, and the upper ends of the outer scissor arm of the two sets of upper scissor arm mechanisms pass through The top scissor arm support shaft 13 is connected, the two ends of the top scissor arm support shaft 13 are located in the chute 12 on both sides of the movable platform 1, and the lower end of the outer scissor arm of the lower scissor arm mechanism is hinged to the trolley bracket 8, The inner scissor arm lower ends of two groups of lower scissor arm mechanisms are connected by the scissor arm support shaft 13 at the bottom, and the two ends of the scissor arm support shaft 13 at the bottom are positioned in the chutes 12 on both sides of the trolley support 8 .

As shown in Fig. 1, 3, described front wheel 9 is directional wheel, and this directional wheel is made up of directional wheel support 14 and the rubber wheel 15 that is installed on the directional wheel support 14, and directional wheel support 14 and trolley support frame 8 bottoms Fixed connection.

As shown in Fig. 1, 4, described rear wheel 7 is universal wheel, and this universal wheel is made up of connecting plate 16, cylindrical platform, universal wheel support 18, brake pad 17 and rubber wheel 15, connecting plate 16 Fixedly installed on the bottom of the trolley support frame 8, the connecting plate 16 is connected with the universal wheel bracket 18 through a cylindrical platform, and the brake pad 17 is hinged on the universal wheel bracket 18.

As shown in Figure 1, the handrail frame 4 is made up of two standpipes and a handrail, and the lower end of the handrail is inserted in the standpipe, and an adjusting bolt 5 is arranged at the junction of the handrail and the vertical bar.

As shown in Figures 1 and 2, a baffle plate 2 is provided at the connection between the top scissor arm support shaft 13 and the outer scissor arm, and the baffle plate 2 is screwed to both ends of the scissor arm support shaft 13.

The working principle of the utility model is as follows:

During use, by manually shaking the rocker 6, the screw rod 11 in the screw drive mechanism is driven to rotate, and the rotation of the screw rod 11 converts its own torque into an axial force, so that the scissor arm support shaft 13 connected to the scissor arm The scissor arm support shaft 13 cooperates with the screw rod 11 to approach each other, thereby driving the scissor mechanism 3 to move, fixing one end of the scissor arm through the scissor arm support shaft 13, and through the connection between the scissor arm support shaft 13 and the rolling chute sleeve Cooperate to make the other end of the scissor arm roll in the rolling chute 12 of the loading vehicle platform 1 and the support frame 8, so as to realize the extension of the scissor arm, and make the loading platform 1 realize lifting. By manually turning the hand-held adjustment bolt 5. Adjust the height of the handrail 4 to adapt to the height of the user. By controlling the cooperation between the handrail 4 and the rear wheel 7, the direction of movement of the trolley can be changed to make it move to the destination. When the destination is reached, the brake pads 17 are embedded in the regular lines of the wheels by stepping on the brake structure to realize parking.

The specific embodiments described above have further described the purpose, technical solutions and beneficial effects of the present utility model in detail. It should be understood that the above descriptions are only specific embodiments of the present utility model and are not intended to limit the present invention. For the utility model, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model shall be included in the protection scope of the utility model.

Claims (5)

1. a kind of Height Adjustable year thing handcart, including moveable platform (1), trolley support frame (8), handrail (4) And front-wheel (9) and trailing wheel (7) installed in trolley support frame (8) bottom, lower end and the trolley support frame of handrail (4) (8) it is fixedly connected, it is characterised in that：Also include scissors mechanism (3), screw mandrel (11) and rocking bar (6), scissors mechanism (3) is by two groups Relative upper scissor arm mechanism and two groups of relative lower scissor arm mechanism compositions, upper scissor arm mechanism and lower scissors mechanism are by hinge The inside and outside scissor arms being connected together are formed, and the pin joint of scissor arms is connected by connecting shaft (10) inside and outside relative two groups, is above cut The outer scissor arms of yoke mechanism and the interior scissor arms of lower scissor arm mechanism are hinged, the interior scissor arms of upper scissor arm mechanism with The hinged and relative upper scissor arm mechanism of outer scissor arms of lower scissor arm mechanism and the enough pin joint of lower scissor arms pass through Scissor arms support shaft (13) links together, and screw mandrel (11) is installed in rotation on scissor arms support shaft (13), and one of them is cut There is the nut coordinated with screw mandrel (11), rocking bar (6) is fixedly mounted on the tail end of screw mandrel (11), above cut in yoke support shaft (13) The interior scissor arms upper end of yoke mechanism is be hinged with mobile platform (1), and the upper end of the outer scissor arms of scissor arm mechanism passes through on two groups Scissor arms support shaft (13) connection at top, scissor arms support shaft (13) both ends at top are located at moveable platform (1) both sides In chute (12), the outer scissor arms lower end of lower scissor arm mechanism and trolley support frame (8) are be hinged, scissor arm mechanism under two groups Interior scissor arms lower end is connected by the scissor arms support shaft (13) of bottom, and the both ends of the scissor arms support shaft (13) of the bottom are located at In the chute (12) of trolley support frame (8) both sides.

2. Height Adjustable year thing handcart according to claim 1, it is characterised in that：Described front-wheel (9) is fixed To wheel, the orientation wheel is made up of orientation wheel support (14) and the rubber wheel (15) on orientation wheel support (14), fixed It is fixedly connected to wheel support (14) with trolley support frame (8) bottom.

3. Height Adjustable year thing handcart according to claim 1, it is characterised in that：Described trailing wheel (7) is ten thousand To wheel, the Universal wheel is by connecting plate (16), cylindrical bar, caster bracket (18), brake block (17) and rubber wheel (15) form, connecting plate (16) is fixedly mounted on the bottom of trolley support frame (8), connecting plate (16) by cylindrical bar with Caster bracket (18) is connected, and brake block (17) is hinged on caster bracket (18).

4. Height Adjustable year thing handcart according to claim 1, it is characterised in that：Handrail (4) is vertical by two Pipe and handrail composition, the lower end of handrail is inserted in standpipe, and regulating bolt (5) is provided with the junction of handrail and vertical rod.

5. Height Adjustable year thing handcart according to claim 1, it is characterised in that：The scissor arms support shaft at top (13) junction with outer scissor arms is provided with baffle plate (2), and the baffle plate (2) is threadedly attached in scissor arms support shaft (13) Both ends.