CN201077723Y

CN201077723Y - Portable balancing hanging

Info

Publication number: CN201077723Y
Application number: CNU2007201528960U
Authority: CN
Inventors: 黄效红
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-06-16
Filing date: 2007-06-16
Publication date: 2008-06-25
Anticipated expiration: 2017-06-16

Abstract

The utility model relates to a device for lifting and conveying materials for buildings, substantially a balance davit convenient to convey materials into the building, belonging to a portable balance hoist, a vertical post sleeve is arranged with an extending arm corresponding to the extending beam, the front end of the extending arm is a notch, the joint position of the extending arm and the vertical post sleeve is adjustable or the angle between both is adjustable, the opening at front end of the notch is larger and the opening at rear end of the notch becomes smaller gradually. The notch is arc-shaped or trapezoidal. A travel switch is arranged at the notch, a handle that can be locked rotatablely is arranged on the extending beam or extending arm. The front part of the extending beam is bent, the bent angle is more than or equal to 100 degrees but less than 180 degrees, the straight segment of the extending beam is approximately equal to the height of window opening, the bent segment is more than or equal to the half of the material width, a limit frame is arranged at front end of the extending beam, a compression spring is arranged below the limit frame, the materials or the hook can contact with the compression spring. A stress-retracted part is arranged between the extending beam and the vertical post sleeve. The utility model has the advantages of simple structure and low cost, and being easy to carry materials into the building, in particular when the window is narrower.

Description

A kind of portable balance crane

Affiliated field

The utility model is a kind of device of giving building handling material, and specifically being a kind of convenience transports balance crane in the room to material.

Background technology

The patent No. a kind of portable balance crane that has been 200520024711.9 patent disclosure, if but house window is narrower, is difficult for material is transported in the room.

The utility model content

The utility model provides a kind of being easy to that material is transported balance crane in the room.

For solving the problems of the technologies described above, the utility model by the following technical solutions:

A kind of portable balance crane, the described beam top end that stretches out is installed described limitting casing.

Column is enclosed within the described beam corresponding position of stretching out extension arm is installed, and this extension arm front end is a recess.Described extension arm and described column cover join adjustable positions or angle adjustable angle between the two.Described recess front opening is big, and the rear end diminishes gradually.Travel switch is installed at described extension arm front end place.Described stretching out on beam or the described extension arm installs and fixes handle.The described anterior place of beam of stretching out is crooked, and crooked angle is more than or equal to 100 degree, less than 180 degree.The straight section that stretches out beam is substantially suitable with the height of window opening, and curved section is more than or equal to half of material width.Described stretching out between beam and the described column cover has a stressed contractibility.

Described limitting casing is movable, and there is travel switch at this limitting casing place; Described motor has another loop and switch.Can make motor after the travel switch place outage of stretching out the back end, still have another loop and switch to come starter motor, make and stretch out beam and can upwards rotate.

Advantage of the present utility model: simple in structure, cheap, especially when window is narrower, also easily material is transported in the room.

Description of drawings

Below in conjunction with accompanying drawing the utility model is elaborated.

The portable balance crane structural representation of Fig. 1 Fig. 2 extension arm and notch configuration scheme drawing

1. column 2. cabinets 3. columns cover 4. stretches out beam 5. ropes 6. and draws material rope 7. pulleys 8. pulleys 9. fulcrums 10. bearings 11. limitting casings 12. compression springs 13. extensible members 14. handles 15. recesses 16. travel switches 17. extension arms 18. positioning plates 19. holes 20. extension arm covers

The specific embodiment

As Fig. 1, with stretching out the cooresponding position of beam extension arm is installed at the column cover, extension arm is level or bevelled, and the extension arm front end is a recess, and recess front opening broad narrows down backward gradually, preferred trapezoidal or circular arc.Stretch out beam when the fulcrum rotation reaches the final position, just be stuck in the recess.Indent is installed travel switch, after stretching out beam and snapping in recess, and contacting travel switch, motor stall.Also can adorn positioning plate on the beam, positioning plate contacting travel switch stretching out.Travel switch is 1 or adjacent 2 when working (one, another nearly works).Stretch out the cardinal principle midway location of beam or extension arm or can spur the fixed handle that stretches out the beam rotation near indent installation one, handled easily personnel pulling is stretched out beam and is come back rotation.High and low position or tilt adjustable that extension arm puts at column.For example put and bore two vertical setting of types holes, get screw thread, put boring at extension arm and get screw thread, extension arm is installed with screw rod at column, according to the height of the height adjustment extension arm of window opening, the position of stretching out beam when determining position that travel switch works and motor stall.Perhaps two holes are bored in the extension arm bottom, between two holes certain distance are arranged; Putting at column and to bore a hole, is that radius bores the number hole around this hole with extension arm base apertures spacing, gets screw thread, with screw rod extension arm is installed.

The angle of stretching out the beam deflection place is 90 to 180 degree, is preferably greater than to equal 100 degree, less than 180 degree.Long straight section equals the window opening height substantially; Short be curved section, more than or equal to half of material width.Stretch out between beam and column cover or the column extensible member is installed,, shunk by certain pressure as compression spring.Guarantee that with the perisystolic pressure of extensible member stretching out Liang Buhui in the material uphill process rotates around fulcrum, especially when small sheave is not too smooth and easy.Fulcrum liner bearing plays a part stable and reduces to rub.Fulcrum is at the position that column puts adjustable up and down (as the mounting means with extension arm).

Stretch out the beam front end limitting casing is arranged.Under the limitting casing compression spring can be arranged.When material or hook rise to the top, exert pressure (for example drawing the material rope to pass in compression spring) to compression spring, compression spring stretches out beam and rotates gradually after shrinking, and compression spring plays buffer action.Stretch out beam and snap in the recess, contacting travel switch, motor stall.Stretch out that the beam front end has only limitting casing and without travel switch, when object rose to the limitting casing place, motor can stall, can also spur to stretch out beam and upwards rotate, and motor can stall in the referenced patents and do not resemble.Stretching out beam can upwards rotate, make stretch out beam at the beginning can level some, the horizontal length that stretches out beam has just increased, and object is difficult for running into wall when rising.No matter stretch out beam and be straight or crooked, length available all has increase.Also can upwards rotate though stretch out beam in the referenced patents, can only be to stretch out beam upwards to rotate when travel switch damages, and plays prevention contingency.And stretching out under the beam actual length unmodified situation in the utility model, stretching out beam, can upwards to rotate main purpose be to increase to stretch out the horizontal length that beam stretches out window, and when mobile object in window, stretch out the horizontal length of beam and can regulate according to actual conditions again.

When limitting casing is movable, the travel switch motor stall that the beam front end is stretched out in the limitting casing contact.With another switch activated motor, stretch out beam and rotate around fulcrum.After stretching out the travel switch of beam contact indent, the motor stall.

There are bipitch silk structure, the application force between adjusting and top ceiling, the floor in the middle substantially place of column.Devices such as motor, retarder, power-transfer clutch, fan, rope woolding district are arranged in the cabinet.

Claims

1. portable balance crane is characterized in that the described beam top end that stretches out installs described limitting casing.

2. according to the described portable balance crane of claim 1, it is characterized in that described column is enclosed within and the described beam corresponding position installation extension arm that stretches out, this extension arm front end is a recess.

3. according to the described portable balance crane of claim 2, it is characterized in that described extension arm and described column cover join adjustable positions or angle adjustable angle between the two.

4. according to the described portable balance crane of claim 2, it is characterized in that described recess front opening is big, the rear end diminishes gradually.

5. according to the described portable balance crane of claim 2, it is characterized in that described extension arm front end place installation travel switch.

6. according to claim 1 or 2 described portable balance cranes, it is characterized in that described stretching out on beam or the described extension arm installs and fixes handle.

7. according to the described portable balance crane of claim 1, it is characterized in that the described anterior place of beam of stretching out is crooked, crooked angle is more than or equal to 100 degree, less than 180 degree.

8. according to the described portable balance crane of claim 7, it is characterized in that the described straight section that stretches out beam is suitable with the height of window opening substantially, curved section is more than or equal to half of material width.

9. according to the described portable balance crane of claim 1, it is characterized in that described stretching out between beam and the described column cover has a stressed contractibility.

10. select a described portable balance crane according to claim 1,2,3,4,5,7,8,9, it is characterized in that described limitting casing is movable, there is travel switch at this limitting casing place; Described motor has another loop and switch.