CN102787775A

CN102787775A - Excavator cab spring balancer

Info

Publication number: CN102787775A
Application number: CN2011101261556A
Authority: CN
Inventors: 韩恩禄; 韩红亮; 李朗忠; 高攀星; 刘家俊; 东玉伟; 郭宝海; 李耀东
Original assignee: Tianjin Hua Shengfu Car Assessories Co Ltd
Current assignee: Tianjin Hua Shengfu Car Assessories Co Ltd
Priority date: 2011-05-15
Filing date: 2011-05-15
Publication date: 2012-11-21

Abstract

The invention discloses a front window counterweight device which can bring convenience for drivers, namely an excavator cab spring balancer which guarantees that a front window can be opened flexibly and conveniently and the front window can stay at any position. The excavator cab spring balancer comprises a support fixed in a cab, a first shaft, a second shaft and a third shaft are sequentially arranged in the support, a first spring is wound on the first shaft, and a third spring is wound on the third shaft. A metal strap of the first spring extends from a position above the first shaft to a position below the second shaft and is fixed on the second shaft, a metal strap of the third spring extends from a position below the third shaft to a position above the second shaft and is fixed on the second shaft, and the two metal straps on the second shaft are wound on the second shaft to form a second spring. One end of a steel wire rope is fixed on the second shaft and can be wound on the second shaft when the second shaft rotates, the other end of the steel wire rope penetrates out of the support and is connected with a connecting plate, and the connecting plate is fixed on the front window of the cab.

Description

Excavator driver's cabin Spring balancer

Technical field

The present invention relates to a kind of equalizer, especially a kind of excavator driver's cabin Spring balancer.

Background technology

In building and other work progresss, often to use excavator.The operation that when the excavator driver's cabin is ventilated, need open and close cab front window.The front window of existing traditional excavator is opened and is closed and can only rest on several stop location of reserving in advance; And because cab front window is thick and heavy; Need very big strength during unlatching; Bad again control when closing consumes a large amount of muscle power and time of human pilot in frequent opening and closing process, influence operating efficiency.Simultaneously, because misoperation also might cause mechanical accident, bring the infringement on the health to the driver.

Summary of the invention

The technical problem that the present invention will solve provides a kind of front window counter weight device that facilitates for the driver, i.e. excavator driver's cabin Spring balancer guarantees that front window opens flexiblely, and front window can rest on the optional position.

For addressing the above problem; A kind of excavator driver's cabin Spring balancer of the present invention comprises the support that is fixed in the driver's cabin, is disposed with first, second and the 3rd in the support; Be wound with first clockwork spring on said first, be wound with the 3rd clockwork spring on the 3rd; Wherein the metal tape of first clockwork spring extend to above in the of first second below and be fixed on second; The metal tape of the 3rd clockwork spring extend to below the 3rd second above and be fixed on second, two parts metal tape on said second is wrapped in second and goes up and form second clockwork spring; Wire rope one end is fixed on second and goes up and can when rotating for second, be wrapped on second; The other end of wire rope passes support, and is connected with junction plate, and said junction plate is fixed on the cab front window.

The external packets of wire rope is covered with shell, and an end of shell is fixed on the support through connecting bolt.

Support among the present invention and internal construction part thereof are formed the skeleton of Spring balancer jointly, mainly play accumulation of energy and fixation, and wherein connected mode is that bearing pin and screw thread are fixed; The backguy part that another part mainly is made up of wire rope and junction plate plays and transmits clockwork spring energy and excavator front window, the stable effect that opens and closes, and wherein connected mode is that riveted connects.

During assembling, elder generation is installed on the Spring balancer holder part on the upper cover plate of driver's cabin, junction plate is installed on the stupefied installing hole of front window bottom window to get final product then.

When cab front window was in closed condition, junction plate was positioned at position B.When front window was carried out open operation, B was to position A motion from the position for junction plate, and first clockwork spring and the 3rd clockwork spring carry out crimp shrinkage simultaneously, and second clockwise rotates, thereby guarantees the dynamic equilibrium in the process of windowing; When front window was carried out shutoff operation, A was to position B motion from the position for junction plate, and second clockwork spring carries out crimp shrinkage simultaneously, and second rotates counterclockwise, thereby guaranteed to close the dynamic equilibrium in the window process.

The present invention is simple in structure, be easy to assembling, and cost is low, and is effective, can great facility be provided for the excavator operating personnel.

Description of drawings

Fig. 1 is the front view of excavator driver's cabin Spring balancer of the present invention.

Fig. 2 is the vertical view of excavator driver's cabin Spring balancer medium-height trestle part of the present invention.

The specific embodiment

In order to make those skilled in the art person understand technical scheme of the present invention better, the present invention is done further detailed description below in conjunction with accompanying drawing and embodiment.

Like Fig. 1, shown in 2; A kind of excavator driver's cabin Spring balancer of the present invention comprises the support 1 that is fixed in the driver's cabin, is disposed with first 9, second 10 and the 3rd 11 in the support 1; Be wound with on said first 9 on 2, the three 11 on first clockwork spring and be wound with the 3rd clockwork spring 4.

Wherein the metal tape of first clockwork spring 2 extend to above first 9 second 10 below and be fixed on second 10; The metal tape of the 3rd clockwork spring 4 extend to below the 3rd 11 second 10 above and be fixed on second, two parts metal tape on said second 10 is wrapped in forms second clockwork spring 3 on second 10.

Wire rope 5 one ends are fixed on second 10 and can when rotating for second 10, be wrapped on second 10; The other end of wire rope 5 passes support, and is connected with junction plate 8, and said junction plate 8 is fixed on the cab front window.

The external packets of wire rope 5 is covered with shell 7, and an end of shell 7 is fixed on the support 1 through connecting bolt 6.

Support among the present invention and internal construction part are formed the skeleton of Spring balancer jointly, mainly play accumulation of energy and fixation, and wherein connected mode is that bearing pin and screw thread are fixed; The backguy part that another part mainly is made up of wire rope 5 and junction plate 8 plays and transmits clockwork spring energy and excavator front window, the stable effect that opens and closes, and wherein connected mode is that riveted connects.

During assembling, elder generation is installed on the Spring balancer holder part on the upper cover plate of driver's cabin, junction plate 8 is installed on the stupefied installing hole of front window bottom window to get final product then.

When cab front window was in closed condition, junction plate 8 was positioned at position B.When front window was carried out open operation, B was to position A motion from the position for junction plate 8, and first clockwork spring 2 and the 3rd clockwork spring 4 carry out crimp shrinkage simultaneously, and second 10 clockwise rotates, thereby guarantees the dynamic equilibrium in the process of windowing; When front window was carried out shutoff operation, A was to position B motion from the position for junction plate 8, and second clockwork spring 3 carries out crimp shrinkage simultaneously, and second 10 rotates counterclockwise, thereby guaranteed to close the dynamic equilibrium in the window process.

Claims

1. excavator driver's cabin Spring balancer; It is characterized in that: said excavator driver's cabin Spring balancer comprises support; Be disposed with first, second and the 3rd in the support, be wound with first clockwork spring on said first, be wound with the 3rd clockwork spring on the 3rd; Wherein the metal tape of first clockwork spring extend to above in the of first second below and be fixed on second; The metal tape of the 3rd clockwork spring extend to below the 3rd second above and be fixed on second, two parts metal tape on said second is wrapped in second and goes up and form second clockwork spring; Wire rope one end is fixed on second and goes up and can when rotating for second, be wrapped on second; The other end of wire rope passes support, and is connected with junction plate.

2. excavator driver's cabin Spring balancer according to claim 1, it is characterized in that: the external packets of wire rope is covered with shell, and an end of shell is fixed on the support through connecting bolt.