Telescopic operating rod of troweling machine

Abstract

The utility model relates to the technical field of troweling machine accessories, in particular to a telescopic operation rod of a troweling machine, which comprises a fixed rod and a cable which are fixedly connected with a troweling machine body, and a telescopic rod movably connected in the fixed rod, a connecting rod is movably connected into the telescopic rod and located in the center of the interior of the telescopic rod, and the lower end of the connecting rod is a cone. A movable supporting block is movably connected into the side wall of the telescopic rod and used for abutting against the inner wall of the fixing rod to fix the telescopic rod. The telescopic rod and the fixed rod can move or be fixed, the movable supporting block used for controlling the process is arranged in the telescopic rod, and therefore no redundant protrusion exists outside the operation rod. The telescopic control can be realized only by rotating the rotating end to enable the connecting rod to advance or retreat, and in addition, the redundant part of the cable is placed in the telescopic groove, so that the cable can be automatically unwound and wound, and the redundant cable is prevented from drooping down to influence the use and carrying.

Description

Technical Field

[0001] The utility model relates to the technical field of trowel machine accessories, in particular to a telescopic operating rod for a trowel machine. Background Art

[0002] The trowel's operating lever is a crucial control component. Manual trowels and some semi-automatic trowels typically have a manual operating lever. However, civil engineering workers vary in height and build, making a non-adjustable operating lever difficult to adapt to different workers.

[0003] The switch structure of the telescopic control of the currently common telescopic operating lever is all on the outside of the operating lever, which is more troublesome to operate. In addition, there are many protruding structures on the outside of the operating lever, which can easily get caught on objects such as ropes during transportation and transfer, causing inconvenience.

[0004] In addition, the worker's handheld operating handle has various switches and operating switches. This switch button needs to be connected to the trowel through a cable, and the cable itself cannot be extended. Therefore, in order to cooperate with the extension and retraction of the operating rod, a long cable is generally reserved. This causes the excess cable to hang down when the operating rod is shortened, which is very inconvenient both in transportation and use. Utility Model Content

[0005] In view of this, the purpose of the present invention is to provide a telescopic operating rod for a trowel, so as to solve the problems in the prior art that the telescopic operating rod is difficult to operate and the inconvenience caused by the reserved excessively long cable.

[0006] Based on the above purpose, the utility model provides a telescopic operating rod for a trowel machine, comprising a fixed rod and a cable fixedly connected to a trowel machine body, the telescopic operating rod further comprising:

[0007] A telescopic rod movably connected to the fixed rod, wherein the telescopic rod is a tubular member that passes through the top and bottom;

[0008] A connecting rod movably connected to the telescopic rod, wherein the connecting rod is located at the center of the telescopic rod and the lower end of the connecting rod is a cone;

[0009] The movable support block movably connected to the side wall of the telescopic rod is used to support the inner wall of the fixed rod to fix the telescopic rod. The movable support block is located outside the connecting rod, and the inner end surface of the movable support block is set as an inclined surface with the same inclination as the cone.

[0010] Furthermore, a telescopic slot is provided in the fixing rod, and the telescopic rod is slidably connected in the telescopic slot.

[0011] Furthermore, an operating handle is provided at the upper end of the telescopic rod, the cable passes through the fixed rod and the telescopic rod, and the upper end of the cable passes through the side wall of the telescopic rod and is connected to the operating handle.

[0012] Furthermore, a wire drum is provided at the bottom of the telescopic slot, the cable is wound around the wire drum, and the wire drum is rotatably connected to the telescopic slot via a rotating shaft.

[0013] Furthermore, a torsion spring is provided in the rotating shaft.

[0014] Furthermore, the operating handle is connected to the telescopic rod through a connecting piece, the operating handle is fixedly connected to the connecting piece, and the connecting piece is rotatably connected to the telescopic rod.

[0015] Furthermore, a fixing bolt is provided on the inner wall of the connecting piece for fixing the connecting piece to the telescopic rod.

[0016] Furthermore, a nut is fixedly connected inside the telescopic rod, an external thread is provided on the connecting rod, and the connecting rod is threadedly connected to the nut, and the upper end of the connecting rod is also fixedly connected to a rotating end.

[0017] Furthermore, the cable is attached to the inner wall of the telescopic rod, and the nut is provided with a through hole for the cable to pass through.

[0018] The beneficial effects of the present invention are as follows: 1. The operating rod consists of a telescopic rod and a fixed rod. The telescopic rod is inside the fixed rod and can be moved or fixed between the telescopic rod and the fixed rod. It is fixed when in use and can be extended or retracted when moving. The movable support block used to control this process is located in the telescopic rod and inside the fixed rod, so there are no unnecessary protrusions on the outside of the telescopic rod and the fixed rod.

[0019] 2. Simply rotate the swivel head to advance the connecting rod, squeezing the movable support block outward, thereby supporting the fixed rod and securing the telescopic rod and fixed rod securely. Reverse-rotating the connecting rod to release the movable support block, allowing the telescopic rod and fixed rod to move freely. Control is easy, and the swivel head is located near the operating handle, making it convenient for workers to use at any time.

[0020] 3. The excess cable is placed in the expansion slot and retracted via a retractable reel. The reel releases the cable when the operating lever is extended and automatically retracts when the operating lever is shortened, preventing excess cable from hanging down and affecting use and handling. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 It is a schematic diagram of the overall structural principle of the utility model.

[0023] Figure 2 It is a front view of the utility model.

[0024] Figure 3 It is a schematic diagram of the internal structure of the device of the present utility model.

[0025] Figure 4 for Figure 3 Enlarged view of part A.

[0026] Figure 5 for Figure 3 Magnified view of part B.

[0027] The following are marked in the figure:

[0028] 101. Fixed rod, 102. Telescopic rod, 103. Operating handle, 104. Connecting piece, 105. Fixing bolt, 106. Cable, 107. Rotating end, 108. Telescopic slot, 109. Connecting rod, 110. Nut, 111. Movable support block, 112. Cable reel, 113. Rotating shaft, 114. Torsion spring. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0030] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the usual meanings understood by people with ordinary skills in the field to which this utility model belongs. The "first", "second" and similar words used in this utility model do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative position relationships. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0031] The first aspect of the present invention is as follows Figure 1 、 Figure 3 and Figure 4 As shown, since the current switch structure of the telescopic control is mostly on the outside of the operating rod, there are many protruding structures on the outside of the operating rod. In order to change this, the switch structure of the telescopic control is redesigned in this solution.

[0032] Specifically, a telescopic slot 108 is provided within the fixed rod 101, into which the telescopic rod 102 is slidably connected. The telescopic rod 102 can only slide up and down within the slot 108 and cannot rotate. The telescopic rod 102 is a tubular member that runs vertically through it. A connecting rod 109 is movably connected at its center. The lower end of the connecting rod 109 is conical. A rotating end 107 is also fixedly connected to the upper end of the connecting rod 109.

[0033] In addition, a movable support block 111 is provided which is movably connected to the side wall of the telescopic rod 102 and is used to support the inner wall of the fixed rod 101 to fix the telescopic rod 102. The movable support block 111 is located on the outside of the connecting rod 109, and the inner end surface of the movable support block 111 is set to an inclined surface with the same inclination as the above-mentioned cone.

[0034] A nut 110 is fixedly connected inside the telescopic rod 102 . The connecting rod 109 is provided with an external thread, and the connecting rod 109 is threadedly connected inside the nut 110 . The upper end of the connecting rod 109 is also fixedly connected to the rotating end 107 .

[0035] Therefore, when performing the telescopic operation, it is only necessary to rotate the rotating end 107 .

[0036] The forward rotation of the rotating end 107 causes the connecting rod 109 to move forward, and the connecting rod 109 moves forward to squeeze the movable support block 111 to expand outward, thereby supporting the fixed rod 101, playing the role of fixing the telescopic rod 102 and the fixed rod 101, and fixing them firmly.

[0037] The rotating end 107 is rotated in the opposite direction to make the connecting rod 109 retreat. The retreat of the connecting rod 109 can release the movable support block 111, thereby making the telescopic rod 102 and the fixed rod 101 movable, freely retractable, and easy to control.

[0038] Another aspect of the present invention is as follows Figure 1 、 Figure 2 As shown, an operating handle 103 is provided at the upper end of the telescopic rod 102, and the operating handle 103 is connected to the telescopic rod 102 via a connecting member 104. The operating handle 103 is fixedly connected to the connecting member 104, and the connecting member 104 is rotatably connected to the telescopic rod 102. In addition, a fixing bolt 105 is provided on the inner wall of the connecting member 104 for fixing the connecting member 104 to the telescopic rod 102.

[0039] By turning the fixing bolt 105 and tightening it, the connecting piece 104 and the telescopic rod 102 can be fixed, and the operating handle 103 and the telescopic rod 102 can be fixed. Loosening the fixing bolt 105 can make the connecting piece 104 and the telescopic rod 102 movable, and the direction of the operating handle 103 can be adjusted, which is convenient for workers to adjust.

[0040] Preferably, the rotating end 107 is located near the operating handle 103, so that workers can use it at any time.

[0041] Another aspect of the present invention is as follows Figure 1 、 Figure 3 and Figure 5 As shown, the cable 106 passes through the fixed rod 101 and the telescopic rod 102, and the lower end of the cable 106 is connected to the trowel body, while the upper end of the cable 106 passes through the side wall of the telescopic rod 102 and is connected to the operating handle 103. A cable drum 112 is provided at the bottom of the telescopic slot 108, and the cable 106 is wound around the cable drum 112. The cable drum 112 is rotatably connected to the telescopic slot 108 via a rotating shaft 113.

[0042] Preferably, a torsion spring 114 is provided in the rotating shaft 113 .

[0043] Because the excess portion of the cable 106 is placed in the telescopic slot 108 and the excess cable 106 is reeled in by the repositionable cable drum 112, the cable drum 112 can release the cable when the operating rod is extended, and automatically reel the cable in when the operating rod is shortened under the action of the torsion spring 114. This prevents excess cable from hanging down and affecting use and transportation. Specific embodiment:

[0045] When a worker needs to adjust the length of the operating rod, he manually rotates the rotating end 107, first rotating the rotating end 107 in the opposite direction, causing the connecting rod 109 to rotate in the opposite direction and retreat (rise) in the nut 110. The retreat of the connecting rod 109 can release the movable support block 111, thereby allowing the telescopic rod 102 and the fixed rod 101 to move freely.

[0046] After the worker pushes and pulls the telescopic rod 102 to make the operating rod length suitable for him, he rotates the rotating end 107 forward to make the connecting rod 109 rotate forward and move forward (descend) in the nut 110. The cone at the lower end (front end) of the connecting rod 109 will squeeze the movable support block 111 to expand outward, thereby supporting the fixed rod 101, thereby fixing the telescopic rod 102 and the fixed rod 101 firmly.

[0047] When the operating rod is extended, the wire drum 112 can release the wire, and when the operating rod is shortened, the wire drum 112 automatically reels the wire under the action of the torsion spring 114.

[0048] In summary, the telescopic rod 102 and the fixed rod 101 of the utility model can be movable or fixed. They are fixed when in use and can be telescopic when movable. The movable support block 111 used to control this process is provided in the telescopic rod 102, located inside the fixed rod 101, so there are no unnecessary protrusions on the outside of the telescopic rod 102 and the fixed rod 101. When operating the telescopic rod, it is only necessary to rotate the rotating end 107 to make the connecting rod 109 move forward, thereby squeezing the movable support block 111 to expand outward, and then supporting the fixed rod 101, playing the role of fixing the telescopic rod 102 and the fixed rod 101, and fixing them very firmly. Rotating the connecting rod 109 in the opposite direction to make it retreat can loosen the movable support block 111, making the telescopic rod 102 and the fixed rod 101 movable. It is easy to control, and the rotating end 107 is located near the operating handle 103, which is convenient for workers to use at any time. In addition, the present invention places the excess portion of the cable 106 in the telescopic slot 108 and reels the excess cable 106 via a repositionable cable reel 112, which releases the cable when the operating rod is extended and automatically reels the cable when the operating rod is shortened, thereby preventing excess cable from hanging down and affecting use and handling.

[0049] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention, including the claims, is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0050] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A telescopic operating rod for a trowel, comprising a fixed rod (101) and a cable (106) fixedly connected to a trowel body, characterized in that: The retractable operating rod further comprises: a telescopic rod (102) movably connected to the fixed rod (101), wherein the telescopic rod (102) is a tubular member that passes through from top to bottom; A connecting rod (109) movably connected to the telescopic rod (102), wherein the connecting rod (109) is located at the center of the telescopic rod (102), and the lower end of the connecting rod (109) is a cone; A movable support block (111) movably connected to the side wall of the telescopic rod (102) is used to support the inner wall of the fixed rod (101) to fix the telescopic rod (102). The movable support block (111) is located outside the connecting rod (109), and the inner end surface of the movable support block (111) is set as an inclined surface with the same inclination as the above-mentioned cone.

2. The telescopic operating rod of a trowel according to claim 1, characterized in that: A telescopic slot (108) is provided in the fixed rod (101), and the telescopic rod (102) is slidably connected in the telescopic slot (108).

3. The telescopic operating rod of a trowel machine according to claim 1, characterized in that: An operating handle (103) is provided at the upper end of the telescopic rod (102), and the cable (106) passes through the fixed rod (101) and the telescopic rod (102), and the upper end of the cable (106) passes through the side wall of the telescopic rod (102) and is connected to the operating handle (103).

4. The telescopic operating rod of a trowel machine according to claim 2, characterized in that: A wire drum (112) is provided at the bottom of the telescopic slot (108), the cable (106) is wound around the wire drum (112), and the wire drum (112) is rotatably connected to the telescopic slot (108) via a rotating shaft (113).

5. The telescopic operating rod of a trowel machine according to claim 4, characterized in that: A torsion spring (114) is provided inside the rotating shaft (113).

6. The telescopic operating rod of a trowel machine according to claim 3, characterized in that: The operating handle (103) is connected to the telescopic rod (102) via a connecting piece (104). The operating handle (103) is fixedly connected to the connecting piece (104). The connecting piece (104) is rotatably connected to the telescopic rod (102).

7. The telescopic operating rod of a trowel machine according to claim 6, characterized in that: The connecting member (104) is provided with a fixing bolt (105) for fixing the connecting member (104) and the telescopic rod (102).

8. The telescopic operating rod of a trowel machine according to claim 1, characterized in that: A nut (110) is fixedly connected inside the telescopic rod (102), an external thread is provided on the connecting rod (109), and the connecting rod (109) is threadedly connected inside the nut (110), and the upper end of the connecting rod (109) is also fixedly connected to a rotating end (107).

9. The telescopic operating rod of a trowel machine according to claim 8, characterized in that: The cable (106) is attached to the inner wall of the telescopic rod (102), and the nut (110) is provided with a through hole for the cable (106) to pass through.

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