A weighing device for engine piston connecting rod

Abstract

The present invention relates to the technical field of automobile engines, and in particular to a weighing device for an engine piston connecting rod, wherein the weighing device comprises a controller, a weighing platform with a rectangular structure, and a straightening device for straightening the piston connecting rod, wherein the straightening device and the weighing platform are both electrically connected to the controller, and the weighing platform comprises a plurality of weighing discs and a plurality of weighing sensors, and a photoelectric sensor for sensing the piston connecting rod is arranged on the side of each weighing disc, and a limiting component is arranged on the side of all weighing discs of the weighing platform, and the straightening device comprises a plurality of V-shaped clamping parts horizontally facing the center line of the weighing disc. The present invention can limit the piston connecting rod, so that the piston connecting rod is kept vertical, reduces measurement errors, improves data accuracy, can weigh piston connecting rods in batches, improves weighing efficiency, and simultaneously improves the power and service life of the engine.

Description

Technical Field

[0001] The invention relates to the technical field of automobile engines, in particular to a weighing device for an engine piston connecting rod. Background Art

[0002] The piston connecting rod of the engine is the transmission part of the engine. It transmits the pressure of the combustion gas to the crankshaft, causing the crankshaft to rotate and output power. The piston connecting rod assembly is mainly composed of a piston, a piston ring, a piston pin, a connecting rod and a connecting rod bearing. The weight of the piston connecting rod will directly affect the power of the engine. When the mass of the piston connecting rod is too large, the engine will consume more fuel. When the mass of the piston connecting rod is too small, the service life of the engine will be reduced. The existing piston connecting rod weighing is all done by manual weighing, which makes it difficult to limit the weighing shape of the piston connecting rod, and also causes errors in the measurement data. Summary of the invention

[0003] The object of the present invention is to provide a weighing device for an engine piston connecting rod to solve the problems raised in the above background technology.

[0004] The technical solution of the present invention is:

[0005] A weighing device for an engine piston connecting rod, the weighing device comprising a controller, a weighing platform with a rectangular structure and a straightening device for straightening the piston connecting rod, the straightening device and the weighing platform are both electrically connected to the controller, the weighing platform comprises a plurality of weighing discs and a plurality of weighing sensors respectively arranged at the bottom of all the weighing discs, a photoelectric sensor for detecting the piston connecting rod is arranged on the side of each weighing disc, all the weighing sensors and all the photoelectric sensors are electrically connected to the controller, the weighing platform is provided with a limit position assembly on the side of all the weighing discs, the straightening device comprises a plurality of V-shaped clamping parts horizontally facing the center line of the weighing discs, and all the V-shaped clamping parts are respectively erected on the side of all the weighing discs.

[0006] Furthermore, all the weighing discs are evenly spaced along the length direction of the weighing platform, the limiting assembly includes a plurality of limiting strips, and all the limiting strips and all the weighing discs are staggered along the length direction of the weighing platform.

[0007] Furthermore, the limit strip is a long strip structure and is vertically installed on the weighing platform. The plane where the limit strip is located is perpendicular to the length direction of the weighing platform. The upper half of the limit strip is provided with a vertical strip hole. The limit strip is hinged with an upper limit head and a lower limit head at both ends of the vertical strip hole. The upper limit head and the lower limit head are hinged to the limit strip through a hinge axis horizontally parallel to the plane where the limit strip is located.

[0008] Furthermore, the upper limit positioning head is a U-shaped structure and the opening direction is perpendicular to the axis of the hinge shaft. The open end of the upper limit positioning head is installed with a resistance shaft parallel to the hinge shaft. The upper limit positioning head is inclined, and the upper limit positioning head is located on the side perpendicular to the plane where the limiting strip is located, and a vertical notch that fits with the limiting strip is provided.

[0009] Furthermore, the lower limit head is a U-shaped structure and the opening direction is perpendicular to the axis of the hinge shaft. The opening end of the lower limit head is installed with a push shaft parallel to the hinge shaft. The lower limit head is provided with a limit block at the bottom of the half section close to the limit strip.

[0010] Furthermore, the V-shaped locking parts are all horizontally arranged, and the middle ends of the V-shaped locking parts are fixedly connected to horizontal sliding bars. Guide seats for sliding sliding bars are arranged on the sides of all weighing discs. The ends of all sliding bars away from the V-shaped locking parts are fixedly connected to connecting rods at the same time. The connecting rods are perpendicular to the length directions of the sliding rods, and the length directions of the horizontal sliding rods are perpendicular to the axis of the articulated shaft. The middle section of the connecting rods is hinged with a driving cylinder, and the direction of the driving cylinder is parallel to the axis of the articulated shaft.

[0011] The present invention provides a weighing device for an engine piston connecting rod through improvement, which has the following improvements and advantages compared with the prior art:

[0012] First, the present invention can limit the position of the piston connecting rod so that the piston connecting rod remains vertical, thereby reducing measurement errors and improving data accuracy.

[0013] Second, the present invention can weigh piston connecting rods in batches, thereby improving weighing efficiency and, at the same time, increasing the power and service life of the engine. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further explained below in conjunction with the accompanying drawings and Examples:

[0015] Figure 1 The three-dimensional structure of the present invention and the piston connecting rod is shown in FIG. Figure 1 ;

[0016] Figure 2 The three-dimensional structure of the present invention and the piston connecting rod is shown in FIG. Figure 2 ;

[0017] Figure 3 It is a schematic diagram of the three-dimensional structure of the righting device of the present invention;

[0018] Figure 4 It is a three-dimensional structural schematic diagram of the weighing platform and the limit assembly of the present invention;

[0019] Figure 5 It is a schematic diagram of the three-dimensional structure of the upper limit positioning head of the present invention;

[0020] Figure 6 It is a schematic diagram of the three-dimensional structure of the lower limit head of the present invention;

[0021] Description of reference numerals:

[0022] Piston connecting rod 1, weighing platform 2, weighing disc 21, straightening device 3, limiting assembly 4, limiting strip plate 5, vertical strip hole 51, upper limiting head 52, lower limiting head 54, hinge shaft 55, abutment shaft 56, limiting block 57, thrust shaft 58, driving cylinder 6, V-shaped locking part 61, horizontal sliding rod 62, guide seat 63, connecting rod 64, vertical notch 65. DETAILED DESCRIPTION

[0023] The present invention is described in detail below, and the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] The present invention provides a weighing device for an engine piston connecting rod through improvement. Figure 1-Figure 6 As shown, the weighing device includes a controller, a weighing platform 2 with a rectangular structure and a straightening device 3 for straightening the piston connecting rod 1. The straightening device 3 and the weighing platform 2 are electrically connected to the controller. The weighing platform 2 includes a plurality of weighing discs 21 and a plurality of weighing sensors respectively arranged at the bottom of all the weighing discs 21 (not shown in the figure). A photoelectric sensor for detecting the piston connecting rod 1 is arranged on the side of each weighing disc 21 (not shown in the figure). All weighing sensors and all photoelectric sensors are electrically connected to the controller. The weighing platform 2 is located on the side of all the weighing discs 21 and a limiting component 4 is arranged. The straightening device 3 includes a plurality of V-shaped clamping parts 61 horizontally facing the center line of the weighing disc 21. All the V-shaped clamping parts 61 are respectively mounted on the sides of all the weighing discs 21, and the piston connecting rod 1 is placed on the weighing disc 21 in the following form: the piston is at the bottom, the connecting rod is at the top and vertical, and the center line of the piston pin is parallel to the axis of the hinge shaft 55.

[0025] When it is necessary to place the piston connecting rod 1 in front of the weighing disc 21, place the piston connecting rod 1 on the weighing disc 21, and the limit rod limits the connecting rod to a vertical state. When the photoelectric sensor detects that there is the piston connecting rod 1 on the weighing disc 21, it transmits a signal to the controller, and the controller controls the driving cylinder 6 to drive all V-shaped locking parts 61 to be stuck in the lower half of the connecting rod, and limits the connecting rod again. After a fixed time interval, the controller controls the driving cylinder 6 to drive all V-shaped locking parts 61 to retract. At the same time, the weighing sensor weighs the piston connecting rod 1 multiple times and transmits the weighing data to the controller, and repeats the above steps.

[0026] All the weighing discs 21 are evenly spaced along the length direction of the weighing platform 2. The limiting assembly 4 includes a plurality of limiting strips 5. All the limiting strips 5 and all the weighing discs 21 are staggered along the length direction of the weighing platform 2. When it is necessary to place the piston connecting rod 1 in front of the weighing disc 21, the piston connecting rod 1 is placed on the weighing disc 21, and the limiting rod limits the connecting rod to a vertical state, thereby limiting the piston connecting rod 1.

[0027] The model of the controller is CPM1A-V1, the model of the digital weighing sensor is WXJ-100kg, and the model of the photoelectric sensor is E3JK-R2M1. The working principles of the controller, digital weighing sensor and photoelectric sensor are all existing technologies and will not be described in detail here.

[0028] The limiting strip 5 is a long strip structure and is vertically installed on the weighing platform 2. The plane where the limiting strip 5 is located is perpendicular to the length direction of the weighing platform 2. The upper half of the limiting strip 5 is provided with a vertical strip hole 51. The limiting strip 5 is respectively hinged with an upper limit head 52 and a lower limit head 54 at both ends of the vertical strip hole 51. The upper limit head 52 and the lower limit head 54 are both hinged to the limiting strip 5 through a hinge axis 55 horizontally parallel to the plane where the limiting strip 5 is located. When it is necessary to place the piston connecting rod 1 in front of the weighing disc 21, first manually swing the lower limit head 54 upward around its corresponding rotation axis to make room, place the piston connecting rod 1 on the weighing disc 21, and then press the lower limit head 54 to be in a horizontal state, and the upper limit head 52 and the lower limit head 54 limit the connecting rod to a vertical state.

[0029] The upper limit head 52 is a U-shaped structure and the opening direction is perpendicular to the axis of the hinge shaft 55. The open end of the upper limit head 52 is installed with a contact shaft 56 parallel to the hinge shaft 55. The upper limit head 52 is tilted. The upper limit head 52 is located on the side perpendicular to the plane where the limit strip 5 is located and is provided with a vertical notch 65 that fits the limit strip 5. The upper limit head 52 is tilted to contact the upper section of the connecting rod, and the lower limit head 54 limits the connecting rod and keeps it in a vertical state.

[0030] The lower limit head 54 is a U-shaped structure and the opening direction is perpendicular to the axis of the hinge shaft 55. The open end of the lower limit head 54 is installed with a push shaft 58 parallel to the hinge shaft 55. The lower limit head 54 is close to the bottom of the half section of the limit strip 5 to set a limit block 57. When the piston connecting rod 1 needs to be placed in front of the weighing disc 21, first manually swing the lower limit head 54 upward around its corresponding rotation axis to make room, place the piston connecting rod 1 on the weighing disc 21, and then press the lower limit head 54 to a horizontal state, and the upper limit head 52 and the lower limit head 54 limit the connecting rod to a vertical state.

[0031] The V-shaped clamping parts 61 are all arranged horizontally, and the middle end of the V-shaped clamping parts 61 is fixedly connected with a horizontal sliding rod 62. The sides of all weighing discs 21 are provided with guide seats 63 for sliding sliding rods. The ends of all sliding rods away from the V-shaped clamping parts 61 are fixedly connected with connecting rods 64 at the same time. The connecting rod 64 is perpendicular to the length direction of the sliding rod, and the length direction of the horizontal sliding rod 62 is perpendicular to the axis of the hinge shaft 55. The middle section of the connecting rod 64 is hinged with a driving cylinder 6, and the direction of the driving cylinder 6 is parallel to the axis of the hinge shaft 55. Since the width of the middle section of the connecting rod is smaller than the width of the two ends of the connecting rod, the V-shaped clamping part 6 1 is stuck on the connecting rod, so that the interaction force between the upper limit head 52 and the lower limit head 54 and the connecting rod is zero, avoiding the influence of the force of the upper limit head 52 and the lower limit head 54 on the weighing, and the angular bisector of the V-shaped clamping part 61 passes through the center line of the weighing disc 21. The controller controls the driving cylinder 6 to drive all the V-shaped clamping parts 61 to clamp on the lower half of the connecting rod, and the connecting rod is limited again and kept vertical. After a fixed time interval, the controller controls the driving cylinder 6 to drive all the V-shaped clamping parts 61 to retract, and at the same time, the weighing sensor piston connecting rod 1 is weighed and the weighing data is transmitted to the controller, and the above steps are repeated.

[0032] Working principle:

[0033] When it is necessary to place the piston connecting rod 1 in front of the weighing disc 21, first manually swing the lower limit head 54 upward around its corresponding rotation axis to make room, place the piston connecting rod 1 on the weighing disc 21, and then press the lower limit head 54 to be horizontal, and the upper limit head 52 and the lower limit head 54 limit the connecting rod to a vertical state. When the photoelectric sensor detects that there is a piston connecting rod 1 on the weighing disc 21, it transmits a signal to the controller, and the controller controls the driving cylinder 6 to drive all V-shaped locking parts 61 to be stuck in the lower half of the connecting rod, and limits the connecting rod again. After a fixed time interval, the controller controls the driving cylinder 6 to drive all V-shaped locking parts 61 to retract, and at the same time, the weighing sensor weighs the piston connecting rod 1 multiple times and transmits the weighing data to the controller, and repeats the above steps.

[0034] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A weighing device for an engine piston connecting rod, characterized in that: The weighing device comprises a controller, a weighing platform (2) of a rectangular structure, and a straightening device (3) for straightening the piston connecting rod (1), the straightening device (3) and the weighing platform (2) are both electrically connected to the controller, the weighing platform (2) comprises a plurality of weighing discs (21) and a plurality of weighing sensors respectively arranged at the bottom of all the weighing discs (21), a photoelectric sensor for sensing the piston connecting rod (1) is arranged on the side of each weighing disc (21), all the weighing sensors and all the photoelectric sensors are electrically connected to the controller, the weighing platform (2) is provided with a limit position assembly (4) on the side of all the weighing discs (21), the straightening device (3) comprises a plurality of V-shaped clamping parts (61) horizontally facing the center line of the weighing discs (21), all the V-shaped clamping parts (61) are respectively arranged on the side of all the weighing discs (21), and all the weighing sensors and all the photoelectric sensors are electrically connected to the controller; The limiting strip (5) is a long strip structure and is vertically installed on the weighing platform (2). The plane where the limiting strip (5) is located is perpendicular to the length direction of the weighing platform (2). The upper half of the limiting strip (5) is provided with a vertical strip hole (51). The limiting strip (5) is respectively hinged with an upper limit head (52) and a lower limit head (54) at both ends of the vertical strip hole (51). The upper limit head (52) and the lower limit head (54) are both hinged to the limiting strip (5) through a hinge shaft (55) horizontally parallel to the plane where the limiting strip (5) is located. The upper limit head (52) is a U-shaped structure and the opening direction is perpendicular to the axis of the hinge shaft (55). The opening end of the upper limit head (52) is provided with a contact shaft (56) parallel to the hinge shaft (55). The upper limit head (52) is arranged obliquely. The upper limit head (52) is provided with a vertical notch (65) on the side of the upper limit head (52) which is located perpendicular to the plane where the limit strip (5) is located and is in contact with the limit strip (5). The lower limit head (54) is a U-shaped structure and its opening direction is perpendicular to the axis of the hinge shaft (55). A push shaft (58) parallel to the hinge shaft (55) is installed at the open end of the lower limit head (54). A limit block (57) is provided at the bottom of the half section of the lower limit head (54) close to the limit strip (5).

2. A weighing device for an engine piston connecting rod according to claim 1, characterized in that: All the weighing discs (21) are distributed at equal intervals along the length direction of the weighing platform (2); the limiting assembly (4) comprises a plurality of limiting strips (5); all the limiting strips (5) and all the weighing discs (21) are distributed in an alternating manner along the length direction of the weighing platform (2).

3. A weighing device for an engine piston connecting rod according to claim 1, characterized in that: The V-shaped locking parts (61) are all arranged horizontally, and the middle end of the V-shaped locking parts (61) is fixedly connected to a horizontal sliding rod (62). The sides of all weighing discs (21) are provided with guide seats (63) for the sliding rods to slide. The ends of all sliding rods away from the V-shaped locking parts (61) are fixedly connected to a connecting rod (64) at the same time. The connecting rod (64) is perpendicular to the length direction of the sliding rod, and the length direction of the horizontal sliding rod (62) is perpendicular to the axis of the hinge shaft (55). The middle section of the connecting rod (64) is hinged with a driving cylinder (6), and the direction of the driving cylinder (6) is parallel to the axis of the hinge shaft (55).

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