JPH0581355U - Construction machine hose clamp structure - Google Patents

Abstract

(57) [Summary] [Purpose] A boom is mounted on a swing bracket that can be swung to the left and right to swing up and down, and a hose clamp attached to the swing bracket holds the hydraulic hose that extends vertically through the hose. To form a clamp, a pair of rubber holding members that hold a hydraulic hose are attached to a metal holder that is fixed to a swing bracket, and an engaging portion that prevents the holding member from moving up and down between the holder and the holding member that is in contact with the holder. In a construction machine in which a hose is formed, the durability of the hose and hose clamp is improved. A holding member vertical movement preventing engagement portion 16 formed between a holder 10 and a hose holding member 12 in contact with the holder 10 is arranged only below a top surface of the holding member 12.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 According to the present invention, a boom is swingably mounted on a swing bracket that swings left and right, and a hydraulic hose extending between the body and the boom is held vertically by a hose clamp attached to the swing bracket to form a hose clamp. In addition, a pair of rubber holding members that hold the hydraulic hose are attached to a metal holder that is fixed to the swing bracket, and an engaging portion that prevents the holding member from moving up and down is formed between the holder and the holding member that is in contact with it. Machine hose clamp structure.

[0002]

[Prior Art]

 Conventionally, in the above hose clamp, as shown in FIG. 5, a pair of sandwiching members 12, 13 and a metal retainer 14 are fitted to a round bar 11 protruding from both left and right ends of a holder 10 and attached to the round bar 11. The hydraulic hose 8 between the holding members 12 and 13 is held and fixed by a screw 15, and a pair of upper and lower tongues 17 attached to the left and right center of the holder 10 are respectively brought into contact with the upper and lower surfaces of one holding member 12. The action of the engaging portion between the tongue piece 17 and the holding member 12 prevents the holding member 12 from moving up and down due to the pressure oil in the hose 8.

[0003]

[Problems to be solved by the device]

 However, when the boom is raised upright, the hose is bent toward the holder side near the upper surface of the holding member, and the hose is strongly pressed against the holding member, causing the rubber holding member to expand to the upper tongue side, thus causing a stress. However, when the boom was repeatedly erected, the hose and the holding member were prone to fatigue damage, and there was room for improvement in terms of durability. An object of the present invention is to improve the durability of the hydraulic hose and the hose clamp with respect to the working arm by modifying the hose clamp.

[0004]

[Means for Solving the Problems]

 The characteristic configuration of the present invention is that the boom is swingably mounted on a swing bracket that is swingable to the left and right, and the hydraulic hose that extends between the machine and the boom is held vertically by a hose clamp attached to the swing bracket. To form the hydraulic hose, attach a pair of rubber holding members that hold the hydraulic hose to a metal holder that is fixed to the swing bracket, and between the holder and the holding member in contact with it, an engaging part that prevents the holding member from moving up and down. In the formed construction machine, the engaging portion is arranged only below the upper surface of the holding member.

[0005]

[Action]

 In other words, if the engaging part that prevents vertical movement of the holding member is arranged only below the upper surface of the holding member, the hose is bent near the upper surface of the holding member due to the standing of the boom, and the hose is pressed against the holding member. The upper part of the rubber gripping member can expand upward freely, so that the stress of the hose and the gripping member can be kept small due to the escape of the gripping member, and fatigue damage of the hose and the gripping member due to repeated boom rising can be sufficiently suppressed. Can be suppressed.

[0006]

[Effect of the device]

 As a result, it has become possible to provide a construction machine that is much more durable in terms of preventing fatigue damage to the hydraulic hose and hose clamp with respect to the work arm.

[0007]

【Example】

 As shown in FIG. 1, a swivel base 3 is provided on the upper part of a traveling vehicle body equipped with a tozer 1 and a crawler type traveling device 2 so as to be driven and rotatable about a vertical axis, and a hydraulic cylinder 7a allows a left and right swing operation. A swing bracket 4a is provided on the swivel base 3, and a boom 4b is mounted on the swing bracket 4a so as to be vertically swingable by a hydraulic cylinder 7b. An arm 4c is swingably mounted on the boom 4b by a hydraulic cylinder 7c. A backhoe device 4 including a bucket 4d rotatably mounted on an arm 4c by a cylinder 7d is provided, and a driving unit 5, a driving unit 6 and the like are provided on a swivel base 3 to form a backhoe with a dozer. As shown in FIGS. 2 to 4, six hydraulic hoses 8 for driving the backhoe device 4 are laid across the swivel base 3 and the boom 4b, and all the hoses 8 are vertically moved to the hose clamp 9 attached to the swing bracket 4a. It is held in a penetrating state. To form the hose clamp 9, a metal holder 10 is fixed to the swing bracket 4a, and a pair of rubber holding members 12 and 13 for holding the hose 8 are attached to a round bar 11 protruding from both left and right ends of the holder 10. A metal presser 14 is fitted, and the hydraulic hose 8 between the holding members 12 and 13 is held and fixed by a screw 15 attached to the round bar 11, and the holding member 12 is held between the holder 10 and the holding member 12 in contact with the holder 10. In order to form the engaging portion 16 that prevents vertical movement, the protrusion 16b integrally formed below the upper surface at the left-right center of the holding member 12 is fitted into the hole 16a formed at the left-right center of the holder 10, The action of the engaging portion 16 is configured to prevent the vertical movement of the holding member 12 caused by the pressure oil in the hose 8. The holding member 12 on the holder 10 side is formed with a chamfered portion 12a located at the upper end side of each of the fitting grooves of the hose 8 so as to ease the pressing of the hose 8 against the holding member 12 when the boom 4b is erected. Configured.

[Other Embodiments] The present invention can be applied to construction machines other than the backhoe, and the swing bracket 4a may be attached to a machine body other than the swivel base 3, and the number of hoses 8 held by the hose clamp 9 is appropriate. Can be selected. The specific structure can be appropriately changed to form the engaging portion 16, for example, a protrusion attached to the holder 10 is fitted into a hole of the holding member 12, or a tongue attached to the holder 10 is attached to the holding member 12. It is possible to abut on the lower surface. Further, a plurality of the engaging portions 16 may be arranged side by side on the left and right, and in short, the engaging portions 16 may be arranged only below the upper surface of the holding member 12 that contacts the holder 10.

It should be noted that reference numerals are added to the claims of the utility model for convenience of comparison with the drawings, but the invention is not limited to the configuration of the accompanying drawings by the entry.

[Brief description of drawings]

1] Overall side view of backhoe

[Fig. 2] Side view of the hose clamp with a part cut away.

FIG. 3 is a partially cutaway plan view of the hose clamp portion.

FIG. 4 is an exploded perspective view of a hose clamp.

FIG. 5 is an exploded perspective view of a conventional hose clamp.

[Explanation of symbols]

 4a Swing bracket 4b Boom 8 Hydraulic hose 9 Hose clamp 10 Holder 12 Holding member 13 Holding member 16 Engagement part

Claims (1)

[Scope of utility model registration request] 1. A swing bracket (4
The boom (4b) is attached to a) so that it can swing up and down, and the hydraulic hose (8) that extends between the body and the boom (4b) is held in a vertically penetrating state in a hose clamp (9) attached to the swing bracket (4a). In order to form the hose clamp (9), a pair of rubber holding members (12), (13) for holding the hydraulic hose (8) are fixed to the swing bracket (4a) by a metal holder (10). )
In the construction machine, the engaging part (16) for preventing the vertical movement of the holding member (12) is formed between the holder (10) and the holding member (12) in contact with the holder (10). A hose clamp structure for a construction machine, wherein (16) is arranged only below the upper surface of the holding member (12).