Earth drill safety control device

Abstract

The present invention discloses a safety control device for an earth drill, which belongs to the field of garden machinery accessories. It mainly includes a control base, on which a displaceable control wheel is provided. A blocking leg rod fixedly connected is provided at a position deviating from the center of the circle on the control wheel. An elastic mechanism for supporting and limiting is provided between the control base and the control wheel. A pull rope is provided on the control wheel. The structure of the present invention is simple, safe and reliable. When the drill bit suddenly stops rotating, the eccentric structure is triggered by the blocking leg rod, so that the throttle cable of the earth drill is loosened, thereby rapidly reducing the rotation speed of the earth drill and avoiding accidents. The present invention is mainly used for the safety control of earth drills.

Description

Technical Field

[0001] The present invention belongs to the field of garden machinery accessories, and more particularly, to a safety control device for a ground drill. Background Art

[0002] Currently, the structure of ground drills on the market usually has a handle directly connected to a gasoline engine and a gearbox, without a safety mechanism. When an operator operates the machine, the drill bit of the ground drill rotates clockwise. When encountering rocks or tree roots, the drill bit suddenly stops rotating. The inertia and torque generated by the stopped rotating drill bit are directly transmitted to the control frame, causing the control frame to rotate counterclockwise, which may lead to dangerous situations such as the operator falling and getting injured. Currently, there is no emergency safety control device to avoid the above-mentioned dangerous situations. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a safety control device for a ground drill. The device has a simple structure, is safe and reliable. When the drill bit suddenly stops rotating, the eccentric structure is triggered by a leg blocking rod, so that the throttle cable of the ground drill is loosened, thereby rapidly reducing the rotation speed of the ground drill and avoiding accidents.

[0004] The safety control device for a ground drill includes a control seat, a displaceable control wheel is provided on the control seat, a leg blocking rod fixedly connected is provided at a position deviating from the center of the circle on the control wheel, an elastic mechanism for supporting and limiting is provided between the control seat and the control wheel, and a pull rope is provided on the control wheel.

[0005] Preferably, a sliding groove is provided on the control wheel, and the control wheel is connected to the leg blocking rod and the control seat through the sliding groove and a fixing member.

[0006] Preferably, the elastic mechanism is a support spring, support spring seats are respectively provided on the control seat and the control wheel, and the support spring is installed on the support spring seats.

[0007] Preferably, the pull rope is a steel wire rope, the pull rope is arranged on the outer circumference of the control wheel, and one end or both ends of the pull rope are connected to the throttle cable of the ground drill.

[0008] Compared with the prior art, the beneficial effects of the present invention are:

[0009] The present invention has a simple structure and is safe and reliable. When drilling encounters rocks or tree roots, the drill bit suddenly stops rotating. The stopped rotating engine will transmit inertia and torque to the control frame, causing the control frame to rotate counterclockwise. When the operator touches the leg blocking rod, the leg blocking rod will drive the control wheel to shift towards the support spring side, compressing the support spring and making the support spring compressed. At this time, the pull rope becomes loose, causing the throttle cable to be loosened, thereby rapidly reducing the rotation speed of the ground drill and achieving safety control. Brief Description of the Drawings

[0010] Figure 1 is a schematic structural diagram of the present invention;

[0011] Figure 2 is a reference diagram of the usage state of the present invention.

[0012] In the figure, 1 is a leg blocking rod; 2 is a control wheel; 3 is a support spring seat; 4 is an elastic mechanism; 5 is a pull rope; 6 is a fixing member; 7 is a control seat; 8 is a chute; 9 is a throttle cable; 10 is a ground drill bracket. Specific embodiments

[0013] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0014] Embodiment 1: As Figure 1 shown, a ground drill safety control device includes a control seat 7. A displaceable control wheel 2 is provided on the control seat 7. A leg blocking rod 1 fixedly connected is provided at a position deviating from the center of the circle on the control wheel 2. An elastic mechanism 4 for supporting and limiting is provided between the control seat 7 and the control wheel 2. A pull rope 5 is provided on the control wheel 2.

[0015] A chute 8 is provided on the control wheel 2. The control wheel 2 is connected to the leg blocking rod 1 and the control seat 7 through the chute 8 and the fixing member 6. The fixing member 6 can be selected as a bolt.

[0016] The elastic mechanism 4 is a support spring. Support spring seats 3 are respectively provided on the control seat 7 and the control wheel 2. The support spring is installed on the support spring seat 3. When the support spring is in a natural state, the leg blocking rod 1 is at position A.

[0017] The pull rope 5 is a steel wire rope. The pull rope 5 is arranged on the outer circumference of the control wheel 2. One end of the pull rope 5 is connected to the throttle cable of the ground drill. Under the support of the support spring, the pull rope 5 is in a tensioned state.

[0018] Embodiment 2: Both ends of the pull rope 5 are respectively connected to the throttle cable 9 of the ground drill; the others are the same as those in Embodiment 1.

[0019] The working principle of the present invention is: When the operator is using the ground drill and encounters some special situations, causing the leg blocking rod 1 to rotate towards direction B, the leg blocking rod 1 will drive the control wheel 2 to shift towards the support spring side along the chute 8, causing the support spring to be stressed and compressed. At this time, the travel of the pull rope 5 is lengthened, and the pull rope 5 is in a relaxed state. The relaxation of the pull rope 5 stops the throttle cable 9 of the ground drill from refueling, thereby causing the machine speed to drop sharply to achieve safe operation.

[0020] When in use, the present invention is fixedly mounted on the earth drill bracket 10 through bolts. When using the machine to drill the ground, the machine and the drill bit rotate clockwise. When the drill bit encounters a rock or a tree root, the drill bit suddenly stops rotating. The suddenly stationary drill bit will transmit the generated inertia and torque to the earth drill control frame, causing it to rotate counterclockwise. The leg stop rod 1 usually remains in place at point A. When the operator touches the leg stop rod 1, the leg stop rod 1 rotates towards point B. The leg stop rod 1 drives the control wheel 2 to shift, compressing the supporting spring, changing the pulling rope 5 from a tightened state to a relaxed state, stopping the fuel supply of the throttle cable of the earth drill, and sharply reducing the machine speed, achieving safe operation, thereby avoiding dangerous situations such as the operator falling and being injured.

Claims

1. A safety control device for an earth drill, characterized in that: It includes a control seat (7), on which a displaceable control wheel (2) is provided. A blocking leg rod (1) fixedly connected is provided at a position deviating from the center of the circle on the control wheel (2). An elastic mechanism (4) for supporting and limiting is provided between the control seat (7) and the control wheel (2). A pull rope (5) is provided on the control wheel (2). A chute (8) is provided on the control wheel (2). The control wheel (2) is connected to the blocking leg rod (1) and the control seat (7) through the chute (8) and a fixing member (6). The elastic mechanism (4) is a support spring. Support spring seats (3) are respectively provided on the control seat (7) and the control wheel (2). The support spring is installed on the support spring seats (3). The pull rope (5) is a steel wire rope. The pull rope (5) is arranged on the outer circumference of the control wheel (2). One end or both ends of the pull rope (5) are connected to the throttle cable (9) of the earth drill. Under the support of the support spring, the pull rope (5) is in a tensioned state.

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