A diesel engine pull-free starter

Abstract

The utility model discloses a diesel engine is exempted from to draw out starter, including the casing and setting in the casing's pivot, the first end of pivot projects the casing and is provided with the overrunning clutch for connecting diesel engine, the pivot is set with plane scroll spring, and the outer end of plane scroll spring is fixedly connected with the casing, its characterized in that still includes pivot rotation drive arrangement, pivot rotation drive arrangement includes driven gear, sliding shaft, driving gear and drive arm subassembly: driven gear fixedly sets up in the first end of pivot, sliding shaft can slide and is arranged on the casing, and with pivot parallel setting, driving gear fixedly sets up in the one end of sliding shaft and projects the casing, and is engaged with driven gear, drive arm subassembly includes rotary arm and sleeve, and the end of sleeve is fixedly connected with sliding shaft, and one end of rotary arm is connected with sleeve, and the other end is provided with handle. The diesel engine is exempted from to draw out starter, and the integration is higher, and the operation is more simple and convenient, and the security is better.

Description

Technical Field

[0001] This utility model relates to the field of diesel engine technology, specifically to a diesel engine starter that does not require pulling. Background Technology

[0002] When starting a diesel engine, its flywheel needs to be accelerated to a certain speed before it can be successfully ignited and started. A no-pull starter is a common diesel engine starting aid. Its core principle is to pre-tighten a built-in planar spiral spring by hand to store elastic potential energy. Then, at the moment of release, the spring quickly rebounds, driving the diesel engine flywheel to rotate at high speed through an overrunning clutch, thereby achieving starting.

[0003] Currently, common pull-free starters typically include a crank handle (or starter lever) for energy storage and a separate starter release mechanism (such as a ratchet wrench). During operation, the user first inserts the crank handle into the starter's shaft end and cranks it to wind the flat spiral spring to store energy. After energy storage is complete, the crank handle must be pulled out, and then the separate starter release mechanism must be operated to release the lock on the shaft, allowing the stored energy to be released and the diesel engine to start.

[0004] The drawbacks of this method are as follows: First, the operation is cumbersome, requiring the crank to be inserted and removed between the energy storage and starting steps, which is not only inefficient but also prone to delays in emergency situations. Second, the separate crank poses a risk of being lost or forgotten, rendering the starter unusable. Third, the process of inserting and removing the crank, as well as the exposed starting pawl and other mechanisms, presents certain safety hazards and may cause pinching or injury to the operator. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the technical problem to be solved by this utility model is to provide a diesel engine starter that is more integrated, easier to operate and safer.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a diesel engine starter without pulling, comprising a housing and a rotating shaft disposed within the housing, the first end of the rotating shaft extending out of the housing and provided with an overrunning clutch for connecting to a diesel engine, a planar spiral spring sleeved on the rotating shaft, the outer end of the planar spiral spring being fixedly connected to the housing, characterized in that it further comprises a rotating shaft rotation drive device; the rotating shaft rotation drive device includes: The driven gear is fixedly sleeved on the first end of the rotating shaft; A sliding shaft, which is slidably mounted on the housing and is arranged parallel to the rotating shaft; A driving gear, which is fixedly sleeved on one end of the sliding shaft extending from the housing, and meshes with the driven gear; and A drive arm assembly includes a rotating arm and a sleeve, the sleeve being fixedly connected to the end of the sliding shaft, one end of the rotating arm being connected to the sleeve, and the other end being provided with a handle.

[0007] Furthermore, the length of the rotating arm is adjustable.

[0008] Furthermore, the rotating arm includes a sleeve, a plug, and a locking mechanism; one end of the sleeve is fixedly connected to the sleeve, and the other end is slidably inserted into the plug; the handle is located at the end of the plug away from the sleeve. The locking mechanism is disposed on the insert rod and is used to lock the insert rod and the sleeve rod at a selected relative position.

[0009] Furthermore, the locking mechanism includes a pin, a first elastic element, and an operating part; a first pin hole is formed on the side wall of the insertion rod; at least one second pin hole is formed on the side wall of the sleeve rod corresponding to the sliding stroke of the insertion rod; the pin is movably disposed within the insertion rod and can move between a locked position and an unlocked position; in the locked position, the pin is simultaneously inserted into the first pin hole and a second pin hole under the elastic force of the first elastic element; in the unlocked position, the pin is driven by the operating part to overcome the elastic force of the first elastic element and exit the second pin hole.

[0010] Furthermore, the locking mechanism also includes a linkage rod; the inner wall of the insertion rod is provided with an arc-shaped guide groove, and the middle part of the linkage rod is slidably connected to the arc-shaped guide groove through a slider; the first end of the linkage rod is connected to the operating part, and the second end is connected to the pin; pressing the operating part can drive the pin to move from the locked position to the unlocked position through the linkage rod.

[0011] Furthermore, it also includes a second locking member disposed on the outer wall of the housing for locking the sliding shaft when it is pulled outward to a predetermined position.

[0012] Furthermore, the second locking element includes a mounting bracket and a limiting block; the mounting bracket is fixed to the housing; one end of the limiting block is hinged to the mounting bracket, allowing the limiting block to rotate around the hinge point to a engaged position or a disengaged position; a limiting groove corresponding to the engaged position is provided on the side wall of the sliding shaft; when the sliding shaft moves to the working position and the limiting block rotates to the engaged position, the free end of the limiting block engages in the limiting groove to restrict the retraction of the sliding shaft.

[0013] Furthermore, a linear bearing or bushing is provided between the sliding shaft and the housing.

[0014] The beneficial effects of this utility model are: The aforementioned diesel engine starter without starting has at least the following advantages: 1. Using this diesel engine starter, the operator only needs to crank the same drive arm to store energy during startup. Then, directly pulling the drive arm axially will disengage the gear and release the energy to start the diesel engine. This eliminates the cumbersome steps of "inserting the crank handle - storing energy - pulling out the crank handle - operating the starting mechanism" in the traditional method, realizing a continuous "crank and pull" operation, which significantly improves operating efficiency and convenience.

[0015] 2. The drive arm assembly is fixedly connected to the sliding shaft, eliminating the need for any detachable additional crank. This fundamentally solves the problem of equipment unusability caused by the easy loss or forgetting of traditional cranks, improving the reliability and uptime of the starter in complex environments such as the field and construction sites.

[0016] 3. Since the external pluggable crank and independent starter wrench have been eliminated, the entire operation process is completed on the integrated drive arm, avoiding dangerous actions such as searching for and operating the exposed pawl after energy storage, reducing the risk of the operator being injured or pinched by high-speed moving parts, and making it safer to use. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model, the accompanying drawings used in the specific embodiments will be briefly described below. In all the drawings, the elements or parts are not necessarily drawn to scale.

[0018] Figure 1 This is a schematic diagram of a diesel engine starter that does not require pulling, according to an embodiment of the present invention. Figure 2 for Figure 1 A schematic diagram at point A in the middle; Figure 3 for Figure 1 A schematic diagram of the rotating arm in the diesel engine starter without pulling is shown; Figure 4 for Figure 1 The diagram shows the pin disengaging from the first and second pin holes in the diesel engine starter without pulling. Figure 5 for Figure 1 A schematic diagram at point B in the middle; Figure label: 100. Housing; 200. Rotating shaft; 300. Driven gear; 400. Sliding shaft; 500. Driving gear; 600. Drive arm assembly; 610. Rotating arm; 611. Sleeve rod; 612. Insert rod; 613. Locking mechanism; 6131. ​​Pin; 6132. First elastic element; 6133. Operating part; 6134. Linkage rod; 6135. Arc-shaped guide groove; 620. Sleeve; 630. Handle; 700. Second locking element; 710. Mounting bracket; 720. Limiting block; 730. Limiting groove. Detailed Implementation

[0019] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the invention; therefore, the invention is not limited to the specific embodiments disclosed below.

[0020] Please see Figures 1 to 5 This utility model provides a diesel engine starter that does not require pulling, including a housing 100 and a rotating shaft 200 disposed within the housing 100. The first end of the rotating shaft 200 extends out of the housing 100 and is equipped with an overrunning clutch for connecting to the diesel engine. A planar spiral spring is sleeved on the rotating shaft 200, and the outer end of the planar spiral spring is fixedly connected to the housing 100. It also includes a rotating shaft rotation drive device. The rotating shaft rotation drive device includes a driven gear 300, a sliding shaft 400, a driving gear 500, and a drive arm assembly 600.

[0021] Specifically, the driven gear 300 is fixedly sleeved on the first end of the rotating shaft 200 (i.e., the end extending out of the housing 100) by means of a key connection or interference fit. The sliding shaft 400 is arranged parallel to the rotating shaft 200 and is slidably passed through the side wall of the housing 100 by means of a linear bearing or bushing to ensure smooth sliding and minimal wear.

[0022] The driving gear 500 is fixedly sleeved on the end of the sliding shaft 400 that extends out of the housing 100. Its module matches that of the driven gear 300, and the two always remain in a meshing state.

[0023] The drive arm assembly 600 includes a sleeve 620 and a rotating arm 610. The sleeve 620 is fixedly connected to the end of the sliding shaft 400 by means of welding, keying, or set screws to ensure no relative rotation. One end of the rotating arm 610 is connected to the sleeve 620 (e.g., by welding or integral molding), and the other end is provided with a handle 630 for the operator to grip.

[0024] When the operator needs to store energy in the planar spiral spring, there is no need to first insert the rocker arm into the rotating shaft 200, store energy, and then pull it out and reinsert the pawl's starter handle. Instead, the operator simply holds the handle 630 of the rotating arm 610 and rotates it circumferentially. During rotation, the drive arm assembly 600 drives the sliding shaft 400 and the drive gear 500 to rotate. Since the drive gear 500 and the driven gear 300 are always meshed, they drive the driven gear 300 and the rotating shaft 200 to rotate, thus beginning to tighten the planar spiral spring to store energy. When energy storage is complete, rotation stops, and the rotating arm 610 pulls the sliding shaft 400 outward until the drive gear 500 and the driven gear 300 separate. The planar spiral spring can then drive the rotating shaft 200 to rotate at high speed, driving the diesel engine to start.

[0025] As a preferred embodiment, the rotating arm 610 in this invention is designed with an adjustable length. After energy storage is completed, the length of the rotating arm 610 can be shortened, which prevents the rotating arm 610 from being too long and causing injury. At the same time, it facilitates pulling the sliding shaft 400 outward. In addition, it allows operators of different heights and physical strengths to find the most effortless and comfortable operating posture.

[0026] In a preferred embodiment, the rotating arm 610 includes a sleeve 611, an insert rod 612, and a locking mechanism 613; one end of the sleeve 611 is fixedly connected to the sleeve 620, and the other end is slidably inserted into the insert rod 612; a handle 630 is disposed at the end of the insert rod 612 away from the sleeve 611; the locking mechanism 613 is disposed on the insert rod 612 for locking the insert rod 612 and the sleeve 611 at a selected relative position.

[0027] The locking mechanism 613 includes a pin 6131, a first elastic element 6132, and an operating part 6133. A first pin hole is provided on the side wall of the insertion rod 612. At least one second pin hole is provided on the side wall of the sleeve rod 611 corresponding to the sliding stroke of the insertion rod 612. The pin 6131 is movably disposed in the insertion rod 612 and can move between a locked position and an unlocked position. In the locked position, the pin 6131 is simultaneously inserted into the first pin hole and a second pin hole under the elastic force of the first elastic element 6132. In the unlocked position, the pin 6131 is driven by the operating part 6133 to overcome the elastic force of the first elastic element 6132 and exit the second pin hole.

[0028] The locking mechanism 613 also includes a linkage rod 6134; the inner wall of the insertion rod 612 is provided with an arc-shaped guide groove 6135, and the middle part of the linkage rod 6134 is slidably connected to the arc-shaped guide groove 6135 through a slider; the first end of the linkage rod 6134 is connected to the operating part 6133, and the second end is connected to the pin 6131; pressing the operating part 6133 can drive the pin 6131 to move from the locked position to the unlocked position through the linkage rod 6134.

[0029] In use, when unlocking is required, the operator presses the operating part 6133. The downward pressure is amplified by the lever action of the linkage rod 6134 and changed in direction, converting into a pulling or pushing force on the tail of the pin 6131, pulling the pin 6131 out of the second pin hole, thus unlocking.

[0030] To prevent the sliding shaft 400 from accidentally retracting due to axial force or unintentional axial tension from the operator, thus causing transmission interruption, this utility model adds a second locking element 700.

[0031] The second locking element 700 is disposed on the outer wall of the housing 100. Its core function is to lock the sliding shaft 400 in the axial position manually or automatically when the operator pulls the sliding shaft 400 outward to a predetermined position (i.e., the gear is not engaged and the rotating arm 610 is at a suitable operating distance).

[0032] Specifically, a preferred embodiment of the second locking element 700 includes a mounting bracket 710 and a limiting block 720.

[0033] The mounting bracket 710 is securely fixed to the outer wall of the housing 100 by screws or welding. The limiting block 720 is a metal block with a certain thickness and strength, one end of which is hinged to the mounting bracket 710 by a pin, so that the limiting block 720 can rotate in a plane around the hinge point like a "latch".

[0034] On the side wall of the sliding shaft 400, a limiting groove 730 is machined that matches the shape of the limiting block 720.

[0035] Operation process: When the sliding shaft 400 is pulled out to the predetermined position, the limiting groove 730 on the sliding shaft 400 moves precisely to a position aligned with the rotation path of the limiting block 720. At this time, the operator manually rotates the limiting block 720 to the "locked position," and the free end of the limiting block 720 (the end opposite to the hinge end) will embed into the limiting groove 730 of the sliding shaft 400. Since the housing 100 is fixed by the mounting bracket 710, and the limiting block 720 locks the sliding shaft 400, the axial movement of the sliding shaft 400 is completely restricted, achieving reliable locking.

[0036] When it is necessary to retract the sliding shaft 400 (e.g., to store it after startup), simply rotate the limit block 720 in the opposite direction to the "disengaged position" so that its free end moves out of the limit groove 730, and the sliding shaft 400 can slide freely.

[0037] To ensure that the sliding shaft 400 can slide smoothly and without jamming axially and to reduce wear on the housing 100, a linear bearing or bushing is provided between the sliding shaft 400 and the through hole of the housing 100.

[0038] Using this structure significantly improves the smoothness of the sliding shaft 400's movement, making the operation of pulling out and pushing back the sliding shaft 400 easier and less strenuous. At the same time, it protects the housing 100 from wear by the sliding shaft 400, increases the service life of the main structural components, and also ensures the straightness of the sliding shaft 400 itself, making gear meshing smoother.

[0039] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A diesel engine starter without pull, comprising a housing and a rotating shaft disposed within the housing, wherein a first end of the rotating shaft extends out of the housing and is provided with an overrunning clutch for connecting to a diesel engine, and a planar spiral spring is sleeved on the rotating shaft, the outer end of the planar spiral spring being fixedly connected to the housing, characterized in that, It also includes a rotating shaft drive device; the rotating shaft drive device includes: The driven gear is fixedly sleeved on the first end of the rotating shaft; A sliding shaft, which is slidably mounted on the housing and is arranged parallel to the rotating shaft; A driving gear, which is fixedly sleeved on one end of the sliding shaft extending from the housing, and meshes with the driven gear; and A drive arm assembly includes a rotating arm and a sleeve, the sleeve being fixedly connected to the end of the sliding shaft, one end of the rotating arm being connected to the sleeve, and the other end being provided with a handle.

2. The diesel engine starter without pulling according to claim 1, characterized in that, The length of the rotating arm is adjustable.

3. The diesel engine starter without pulling according to claim 2, characterized in that, The rotating arm includes a sleeve, a plug, and a locking mechanism; one end of the sleeve is fixedly connected to the sleeve, and the other end is slidably inserted into the plug; the handle is located at the end of the plug away from the sleeve. The locking mechanism is disposed on the insert rod and is used to lock the insert rod and the sleeve rod at a selected relative position.

4. The diesel engine starter without pulling according to claim 3, characterized in that, The locking mechanism includes a pin, a first elastic element, and an operating part; a first pin hole is provided on the side wall of the insertion rod; at least one second pin hole is provided on the side wall of the sleeve rod corresponding to the sliding stroke of the insertion rod; the pin is movably disposed inside the insertion rod and can move between a locked position and an unlocked position; in the locked position, the pin is simultaneously inserted into the first pin hole and a second pin hole under the elastic force of the first elastic element; in the unlocked position, the pin is driven by the operating part to overcome the elastic force of the first elastic element and retract from the second pin hole.

5. The diesel engine starter without pulling according to claim 4, characterized in that, The locking mechanism further includes a linkage rod; the inner wall of the insertion rod is provided with an arc-shaped guide groove, and the middle part of the linkage rod is slidably connected to the arc-shaped guide groove through a slider; the first end of the linkage rod is connected to the operating part, and the second end is connected to the pin; pressing the operating part can drive the pin to move from the locked position to the unlocked position through the linkage rod.

6. The diesel engine starter without pulling according to claim 1, characterized in that, It also includes a second locking element, which is disposed on the outer wall of the housing, for locking the sliding shaft when it is pulled outward to a predetermined position.

7. The diesel engine starter without pulling according to claim 6, characterized in that, The second locking component includes a mounting bracket and a limiting block; the mounting bracket is fixed to the housing; one end of the limiting block is hinged to the mounting bracket, allowing the limiting block to rotate around the hinge point to either a engaged or disengaged position; a limiting groove corresponding to the engaged position is provided on the side wall of the sliding shaft; when the sliding shaft moves to the working position and the limiting block rotates to the engaged position, the free end of the limiting block engages in the limiting groove to restrict the retraction of the sliding shaft.

8. The diesel engine starter without pulling according to claim 1, characterized in that, A linear bearing or bushing is provided between the sliding shaft and the housing.

Images