Feeding and discharging mechanism of sucker rod straightening machine

Abstract

The invention relates to the technical field of sucker rod production, and discloses a sucker rod straightening machine feeding and discharging mechanism which comprises a feeding frame, a discharging frame and a groove body. The two feeding frames are symmetrically arranged, and the groove body is connected between the two feeding frames. The material taking plates are located between the two feeding frames and synchronously and intermittently swing in a reciprocating mode, and a plurality of grooves allowing the material taking plates to swing are formed in the upper portion of the groove body; the lower side of the material taking plate is provided with an arc edge, the two ends of the material taking plate are each provided with a notch facing the feeding frame and used for grabbing the sucker rod, the notches extend towards the middle of the material taking plate, and the distance between the notches and the swing center is gradually decreased from the outer ends to the middle of the material taking plate. The material taking plate between the lower side of the outer end of the notch and the arc edge is provided with a tip part; when the material taking plate swings towards the feeding frame on one side, the tip end portion corresponds to the position between the lower sides of the two lowermost sucker rods supported by the feeding frame on the side. According to the double-side feeding device, double-side cooperative feeding can be achieved, sucker rods are grabbed on the other side while feeding is conducted on one side, the feeding efficiency is improved through alternate feeding, and then the straightening efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of sucker rod production, and in particular to a loading and unloading mechanism of a sucker rod straightening machine. Background Art

[0002] The sucker rod is a slender rod in the pumping well, connecting the pumping unit and the oil pump. It gradually lifts the oil deep underground to the surface through up and down reciprocating motion. Its working environment is extremely harsh, and it needs to withstand a variety of complex loads such as tension, compression, bending, and torsion for a long time. At the same time, it must withstand the test of high temperature, high pressure, corrosion and other factors underground.

[0003] In oilfield operations, the performance of the sucker rod directly affects the efficiency and quality of oil extraction. A bent sucker rod will seriously affect its working performance and service life. Therefore, the straightening process of sucker rod production is very important.

[0004] Since the sucker rod is a slender rod, a special loading and unloading mechanism is required to ensure that the sucker rod enters and exits the straightening machine. For example, the invention patented fully automatic pipe loading and unloading device with publication number CN106736074B can only realize single-side loading of pipes such as steel pipes. When in use, the device requires multiple actions to realize the loading of a sucker rod. The multiple loading steps limit the improvement of loading efficiency, resulting in a long straightening interval time, which inhibits the improvement of production efficiency. Summary of the invention

[0005] The purpose of the present invention is to solve the above-mentioned problems in the prior art and provide a loading and unloading mechanism for a sucker rod straightening machine.

[0006] To achieve the above object, the present invention provides the following technical solutions: The loading and unloading mechanism of the sucker rod straightening machine includes a loading rack and a unloading rack respectively arranged at the front and rear sides of the straightening machine for supporting the sucker rods, a trough body supporting the sucker rods and corresponding to the inlet of the straightening machine, and an automatic telescopic rod for pushing the sucker rods from the trough body to the straightening machine; The two material loading racks are symmetrically arranged, and the trough body is connected between the two material loading racks; it also includes a plurality of material taking plates which are located between the two material loading racks and synchronously reciprocate and intermittently swing, and the upper part of the trough body is provided with a plurality of grooves for the material taking plates to swing; The feeding plate has an arc edge on the lower side, and both ends of the feeding plate have notches for grabbing the sucker rods facing the loading rack, the notches extend toward the middle of the feeding plate, and the distance between the notch and the swing center gradually decreases from the outer end to the middle of the feeding plate; the feeding plate between the lower side of the outer end of the notch and the arc edge has a tip; when the feeding plate swings toward one side of the loading rack, the tip corresponds to between the lower sides of the two lowest sucker rods supported by the loading rack on that side.

[0007] Furthermore, the loading rack and the unloading rack both include a horizontal support portion and an inclined support portion, the upper end of the inclined support portion is connected to one side of the horizontal support portion, and a plurality of limit blocks are arranged on the upper side of the lower end of the inclined support portion.

[0008] Furthermore, a plurality of rollers for supporting the sucker rod are provided at the lower inner part of the tank body.

[0009] Furthermore, the middle portion of the trough side wall is a first bending portion bent away from the center of the trough, the upper portion of the trough side wall is a second bending portion bent away from the center of the trough, and the second bending portion is connected to the lower side of the loading rack.

[0010] Furthermore, it also includes a first bracket, on which a rotating shaft and a motor for driving the rotating shaft to swing are rotatably mounted, and the rotating shaft passes through the upper part of the feeding plate and is connected to the feeding plate.

[0011] Furthermore, the automatic telescopic rod is installed on the first bracket and corresponds to the inner side of the tank body, and a top block for pushing the sucker rod is provided at the telescopic end of the automatic telescopic rod.

[0012] Furthermore, a crankshaft is rotatably mounted on the upper side of the unloading rack, the crankshaft includes a plurality of curved portions, a plurality of guide plates corresponding to the curved portions are rotatably mounted on the unloading rack, a traction body is connected between one end of the guide plate away from the rotating portion and the middle portion of the curved portion, the curved portion swings along with the crankshaft through the traction body so that the end of the guide plate away from the rotating portion has a first state higher than the unloading rack and a second state not higher than the unloading rack.

[0013] Furthermore, it also includes a second bracket supporting the rotation of the crankshaft, and the second bracket is located at the rear side of the straightening machine; the swing center of the crankshaft and the swing center of the feeding plate are located on the same straight line, and a coupling is connected between the crankshaft and the feeding plate.

[0014] Furthermore, a plurality of rollers supporting the pumping rods are rotatably mounted on the unloading rack, and a buffer plate corresponding to the straightening machine is provided on the upper side of one end of the unloading rack away from the straightening machine.

[0015] Furthermore, when the picking plate swings to the highest position, the end of the guide plate away from the rotation position is in the second state.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present invention uses a feeding plate with a notch to intermittently swing back and forth between two feeding racks. When the notch on one side of the feeding plate releases the sucker rod to the tank body, the notch on the other side can grab the sucker rod of the feeding rack on the other side. The reciprocating swing of the feeding plate can realize double-sided coordinated feeding. When one side is feeding, the other side can grab the sucker rod at the same time. Each movement of the feeding plate, that is, each swing in one direction, can supply a sucker rod. The sucker rods on the two feeding racks are alternately fed to improve the feeding efficiency, thereby improving the straightening efficiency. The present invention has a crankshaft which swings synchronously with the feeding plate. The crankshaft can drive the guide plate on the feeding frame to flip back and forth intermittently through a traction body, so that the guide plate is intermittently tilted, thereby not affecting the output of the sucker rod from the straightening machine and realizing automatic feeding of the straightened sucker rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of the present invention.

[0018] Figure 2 It is a schematic diagram of the feeding part of the present invention.

[0019] Figure 3 It is a schematic diagram of a loading rack of the present invention.

[0020] Figure 4 It is a schematic diagram of a material unloading rack of the present invention.

[0021] Figure 5 Schematic diagram of the first bracket of the present invention.

[0022] Figure 6 It is a schematic diagram of the matching position of the material taking plate and the trough body of the present invention.

[0023] Figure 7 It is a schematic diagram of the material taking plate and its driving according to the present invention.

[0024] Figure 8 It is a schematic diagram of the tank body of the present invention.

[0025] Fig. 9 It is a cross-sectional schematic diagram of the present invention.

[0026] Fig.10 It is a schematic diagram of the first state of the material taking plate of the present invention.

[0027] Fig.11 It is a schematic diagram of the second state of the material taking plate of the present invention.

[0028] Fig.12 It is a schematic diagram of the third state of the material taking plate of the present invention.

[0029] In the figure: 1, loading rack; 2, unloading rack; 3, material taking plate; 4, tank body; 5, automatic telescopic rod; 6, first bracket; 7, rotating shaft; 8, motor; 9, crankshaft; 10, coupling; 11, traction body; 12, roller; 13, guide plate; 14, second bracket; 15, limit block; 16, buffer plate; 17, straightening machine body; 301, arc edge; 302, notch; 303, tip; 401, groove; 402, roller; 403, first bending portion; 404, second bending portion; 501, top block; 901. Bend. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical scheme and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention, that is, the embodiments described are only part of the embodiments of the present invention, rather than all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present invention.

[0032] It should be noted that relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0033] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" that may appear should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the term "provided with" that may appear should be understood in a broad sense. For example, the object "provided with" may be a part of the body, or may be arranged separately from the body and connected to the body, and the connection may be a detachable connection or an inseparable connection. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] The specific embodiment of the loading and unloading mechanism of the sucker rod straightening machine provided by the present invention is as follows: See also Figure 1-12 The loading and unloading mechanism of the sucker rod straightening machine includes a loading rack 1 and a unloading rack 2 which support the sucker rods and are respectively arranged at the front and rear sides of the straightening machine. The upper parts of the loading rack 1 and the unloading rack 2 have a horizontal supporting part and an inclined supporting part. The upper end of the inclined supporting part is connected to one side of the horizontal supporting part. A plurality of limit blocks 15 are arranged on the upper side of the lower end of the inclined supporting part.

[0036] Two loading racks 1 are symmetrically arranged, and the sucker rods to be straightened are placed on the loading racks 1 in a single layer. The lower sides of the two loading racks 1 are relatively close to each other and there is a gap between the two loading racks 1. When the lowest sucker rod on the loading rack 1 is taken away, the sucker rods fall down one by one along the inclined support part, and the limit block 15 supports the lowest sucker rod to prevent it from falling off from the loading rack 1.

[0037] The horizontal support part of the lower rack 2 corresponds to the straightening machine body 17, supporting the straightened sucker rod. Different from the upper rack 1, the upper rack 1 adopts a pure frame structure, while the upper side of the lower rack 2 is provided with a panel, which includes a horizontal panel and an inclined panel, and the upper end of the inclined panel is connected to the horizontal panel.

[0038] In this embodiment, a tank body 4 supporting the sucker rod and corresponding to the entrance of the straightening machine and an automatic telescopic rod 5 for pushing the sucker rod from the tank body 4 to the straightening machine are also provided; the tank body 4 is connected between the two loading racks 1; a plurality of rollers 402 supporting the sucker rod are provided at the lower inner part of the tank body 4. When the sucker rod enters the tank body 4, the rollers 402 support the sucker rod, and the automatic telescopic rod 5 uses the rollers 402 to reduce resistance and damage to the sucker rod when pushing the sucker rod.

[0039] The cross section of the tank body 4 is approximately U-shaped. Specifically, the middle part of both side walls of the tank body 4 is a first bending part 403 bent away from the center of the tank body 4, and the upper part of the side walls of the tank body 4 is a second bending part 404 bent away from the center of the tank body 4. The second bending part 404 is connected to the lower side of the loading rack 1. The lower end of the upper side of the loading rack 1, that is, the lower end of the inclined support part, has a plurality of protruding parts, the limit block 15 is located on the upper side of the protruding part, and the second bending part 404 is connected to the lower side of the protruding part.

[0040] The automatic telescopic rod 5 can be a pneumatic telescopic rod, a hydraulic telescopic rod or an electric telescopic rod, and a push block 501 for pushing the pumping rod is provided at the telescopic end of the automatic telescopic rod 5. The automatic telescopic rod 5 corresponds to the inner side of the tank body 4 and is located on the side of the tank body 4 away from the straightening machine body 17. The automatic telescopic rod 5 pushes the pumping rod in the tank body 4 out for a distance and allows the pumping rod to enter the straightening machine body 17. The pumping rod is straightened under the drive of the straightening machine body 17 and passes through the straightening machine body 17 to move to the upper side of the horizontal panel of the unloading rack 2.

[0041] In this embodiment, a plurality of feeding plates 3 are provided between two feeding racks 1 and are synchronously reciprocating and intermittently swinging, and a plurality of grooves 401 are provided on the upper part of the trough body 4 for the feeding plates 3 to swing; the grooves 401 prevent the upper part of the trough body 4 from affecting the swinging of the feeding plates 3, and the protruding parts of the feeding plates 3 and the lower ends of the upper sides of the feeding racks 1 do not correspond laterally, and the protruding parts and the limit blocks 15 will not affect the swinging of the feeding plates 3.

[0042] The lower side of the feeding plate 3 has an arc edge 301, and the swing path of the arc edge 301 is located on the upper side of the roller 402; both ends of the feeding plate 3 have notches 302 for grabbing the sucker rod facing the loading rack 1, the notch 302 extends to the middle of the feeding plate 3 and the distance from the notch 302 to the swing center gradually decreases from the outer end to the middle of the feeding plate 3. In this way, the swing radius of the sucker rod can be increased after grabbing the sucker rod, thereby avoiding interference between the sucker rod and the trough body 4 and the limit block 15; the feeding plate 3 between the lower side of the outer end of the notch 302 and the arc edge 301 has a tip portion 303; when the feeding plate 3 swings toward the loading rack 1 on one side, the tip portion 303 corresponds to the lower sides of the two lowest sucker rods supported by the loading rack 1 on this side, and the tip portion 303 can extend between the two lowest sucker rods, so that the two sucker rods are separated, and the lowest sucker rod enters the notch 302, thereby realizing the grabbing of the lowest sucker rod.

[0043] In this embodiment, a first bracket 6 is provided, and the first bracket 6 is in a door shape. The tank body 4 is located inside the first bracket 6. The length of the first bracket 6 is greater than the length of the loading rack 1, the length of the sucker rod, and the length of the tank body 4. The automatic telescopic rod 5 is installed at one end of the first bracket 6. A rotating shaft 7 and a motor 8 for driving the rotating shaft 7 to swing are rotatably installed on the first bracket 6. The rotating shaft 7 passes through the upper part of the feeding plate 3 and is connected to the feeding plate 3. In some other embodiments, a counterweight is provided on the upper end of the feeding plate 3. The counterweight can balance the gravity imbalance after the notch 302 at the lower part of the feeding plate 3 grabs the sucker rod, so that the swing of the feeding plate 3 is smoother.

[0044] See also Fig.10 , Fig.11 and Fig.12 In this embodiment, Fig.10 The state is that the material taking plate 3 is in a naturally hanging state. According to this state, the material taking plate 3 can swing 75 degrees to both sides and 75 degrees to the right. Fig.12 As shown. Fig.10 When the motor 8 drives the rotating shaft 7 to rotate to one side, the feeding plate 3 starts to swing to the right, and its right end tip 303 passes between the two sucker rods at the bottom of the right feeding rack 1, squeezing the sucker rod below, so that the sucker rod at the bottom enters the right notch 302 of the feeding plate 3, and continues to rotate until Fig.11In this state, the material taking plate 3 enables the sucker rod entering the right notch 302 to pass over the limit block 15 of the right loading rack 1 and move to the innermost end of the right notch 302 under the action of gravity. Since the distance between the inner end of the notch 302 and the swing center is small, the sucker rod will not be blocked by the limit block 15 during the subsequent resetting process.

[0045] Continue to turn to Fig.12 The sucker rod on the other side is released into the tank body 4. At this time, the material taking plate 3 stops, and the telescopic end of the automatic telescopic rod 5 extends to push the sucker rod in the tank body 4 to the straightening machine body 17 for straightening. After the sucker rod passes through the tank body 4 and the straightening machine body 17, the material taking plate 3 is moved from Fig.12 Swing the status to the left to reset.

[0046] from Figure 10 to Figure 11 Then Fig.12 The process of making the notch 302 on the right side of the pick-up plate 3 grab the sucker rod under the right side of the loading rack 1 is also the process of the notch 302 on the left side of the pick-up plate 3 releasing the sucker rod grabbed from the left side of the loading rack 1. Fig.10 At this time, the inner end of the left notch 302 of the material taking plate 3 is still lower, and the sucker rod in the left notch 302 is still located at the inner end of the left notch 302. At the same time, due to the effect of the arc edge 301, the sucker rod under the left material loading rack 1 cannot move down along the inclined support part. The material taking plate 3 continues to swing to the right until Fig.11 In this state, the feeding plate 3 does not affect the downward movement of the sucker rod on the left loading rack 1, and the limit block 15 limits it. The outer end of the left notch 302 is lower than the inner end, and the sucker rod moves toward the outer end of the left notch 302. The first bent portion 403 and the inner side of the notch 302 support the falling sucker rod. The first bent portion 403 prevents the tank body 4 and the feeding plate 3 from interfering with the sucker rod, and allows the sucker rod to fall steadily. The feeding plate 3 continues to swing right until Fig.12 In this process, the distance of the free fall of the sucker rod is only the thickness of the tip 303, and the impact is small. Compared with the feeding structure in the prior art, the impact is significantly reduced.

[0047] It can be seen from the above process that the picking plate 3 can grab the sucker rod on one side while releasing the sucker rod on the other side. The picking plate 3 makes a reciprocating 150-degree intermittent swing. Each movement of the picking plate 3, that is, each swing of 150 degrees in one direction, can supply a sucker rod. The picking plate 3 grabs and loads the materials alternately on both sides, which is beneficial to improving the loading efficiency.

[0048] A crankshaft 9 is rotatably installed on the upper side of the unloading rack 2. Specifically, in the present embodiment, a second bracket 14 is provided to support the rotation of the crankshaft 9. The second bracket 14 is located on the rear side of the straightening machine body 17. The second bracket 14 is door-shaped and corresponds to the horizontal panel of the unloading rack 2. The swing center line of the crankshaft 9 and the swing center line of the feeding plate 3 are located on the same straight line. A coupling 10 is connected between the crankshaft 9 and the feeding plate 3. Specifically, the coupling 10 is connected between one end of the crankshaft 9 and one end of the rotating shaft 7, so that the crankshaft 9, the rotating shaft 7 and the feeding plate 3 swing synchronously.

[0049] The crankshaft 9 includes a plurality of U-shaped curved portions 901, and a plurality of guide plates 13 corresponding to the curved portions 901 are rotatably mounted on the unloading rack 2. One end of the guide plate 13 is rotatably connected to the horizontal panel of the unloading rack 2, and the rotating position of the guide plate 13 is located on the horizontal panel and close to the inclined panel. A traction body 11 is connected between the end of the guide plate 13 away from the rotating position and the middle of the curved portion 901. The curved portion 901 swings along with the crankshaft 9 through the traction body 11, so that the end of the guide plate 13 away from the rotating position has a first state higher than the unloading rack 2 and a second state not higher than the unloading rack 2.

[0050] In this embodiment, the traction body 11 is a flexible rope, one end of which is connected to the guide plate 13, and the other end is connected to a hard ring, which is sleeved in the middle of the curved portion 901 and can rotate in the middle of the curved portion 901. In some other embodiments, the traction body 11 is a hard rod, and the two ends of the hard rod are respectively hinged to the guide plate 13 and the middle of the curved portion 901.

[0051] When the crankshaft 9 rotates, the guide plate 13 can swing back and forth under the combined action of its gravity and the traction body 11, forming the first state and the second state of the guide plate 13 respectively. Fig.12 When the guide plate 13 is in the state of natural suspension, the end away from the rotation position is in the second state; at this time, the guide plate 13 does not affect the straightening machine body 17 to transport the straightened sucker rod to the upper side of the horizontal panel of the lower rack 2. Fig.10 In the state, the end of the guide plate 13 away from its rotation point is in the first state, and the guide plate 13 is in an inclined state, so that the straightening sucker rod on the upper side of the horizontal panel can be moved down to the upper side of the inclined panel, and the limit block 15 limits the straightening sucker rod on the inclined panel.

[0052] In some embodiments, a plurality of rollers 12 supporting pumping rods are rotatably mounted on the unloading rack 2. The rollers 12 support the pumping rods instead of the horizontal panel of the unloading rack 2. The rollers 12 support the straightened pumping rods output from the straightening machine body 17, which can reduce the friction on the pumping rods. On the other hand, when the pumping rods are separated from the straightening machine body 17 at a certain speed, the rollers 12 reduce the movement resistance of the pumping rods so that the straightened pumping rods can continue to be transported for a distance, completely separated from the straightening machine body 17, and completely enter the upper side of the horizontal panel of the unloading rack 2. A buffer plate 16 corresponding to the straightening machine is provided on the upper side of the unloading rack 2 away from the straightening machine. The buffer plate 16 is made of a rubber plate to play a buffering role. The back side of the buffer plate 16 has a guardrail plate supporting the buffer plate 16.

[0053] In this embodiment, an annular groove is provided on the outer side of the roller 402, which has a good limiting effect on the straightening sucker rod; in some other embodiments, an annular groove corresponding to the straightening sucker rod is also provided on the outer side of the drum 12, which can improve the stability of the straightening sucker rod after being separated from the straightening machine body 17.

[0054] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions recorded in the aforementioned embodiments without creative work, or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A loading and unloading mechanism of a sucker rod straightening machine, comprising a loading rack (1) and a unloading rack (2) respectively arranged at the front and rear sides of the straightening machine for supporting the sucker rods, a trough (4) supporting the sucker rods and corresponding to the inlet of the straightening machine, and an automatic telescopic rod (5) for pushing the sucker rods from the trough (4) to the straightening machine; the characteristics are as follows: Two loading racks (1) are symmetrically arranged, and the trough body (4) is connected between the two loading racks (1); it also includes a plurality of material taking plates (3) located between the two loading racks (1) and synchronously reciprocating and intermittently swinging, and the upper part of the trough body (4) is provided with a plurality of grooves (401) for the material taking plates (3) to swing; The feeding plate (3) has an arc edge (301) on the lower side, and both ends of the feeding plate (3) have notches (302) facing the loading rack (1) for grabbing the pumping rods, the notches (302) extending toward the middle of the feeding plate (3), and the distance between the notch (302) and the swing center gradually decreases from the outer end to the middle of the feeding plate (3); the feeding plate (3) between the lower side of the outer end of the notch (302) and the arc edge (301) has a tip portion (303); when the feeding plate (3) swings toward the loading rack (1) on one side, the tip portion (303) corresponds to between the lower sides of the two lowest pumping rods supported by the loading rack (1) on that side.

2. The loading and unloading mechanism of the sucker rod straightening machine according to claim 1 is characterized in that: The loading rack (1) and the unloading rack (2) both comprise a horizontal support portion and an inclined support portion, the upper end of the inclined support portion is connected to one side of the horizontal support portion, and a plurality of limit blocks (15) are provided on the upper side of the lower end of the inclined support portion.

3. The loading and unloading mechanism of the sucker rod straightening machine according to claim 1 is characterized in that: A plurality of rollers (402) for supporting the pumping rods are provided at the lower inner portion of the tank body (4).

4. The loading and unloading mechanism of the sucker rod straightening machine according to claim 1 or 3, characterized in that: The middle portion of the side wall of the trough body (4) is a first bent portion (403) bent in a direction away from the center of the trough body (4), and the upper portion of the side wall of the trough body (4) is a second bent portion (404) bent in a direction away from the center of the trough body (4), and the second bent portion (404) is connected to the lower side of the loading rack (1).

5. The loading and unloading mechanism of the sucker rod straightening machine according to claim 1 is characterized in that: It also comprises a first bracket (6), on which a rotating shaft (7) and a motor (8) for driving the rotating shaft (7) to swing are rotatably mounted, and the rotating shaft (7) passes through the upper part of the material taking plate (3) and is connected to the material taking plate (3).

6. The loading and unloading mechanism of the sucker rod straightening machine according to claim 5 is characterized in that: The automatic telescopic rod (5) is mounted on the first bracket (6) and corresponds to the inner side of the tank body (4). A top block (501) for pushing the pumping rod is provided at the telescopic end of the automatic telescopic rod (5).

7. The loading and unloading mechanism of the sucker rod straightening machine according to claim 1 is characterized in that: A crankshaft (9) is rotatably mounted on the upper side of the unloading frame (2), the crankshaft (9) comprising a plurality of curved portions (901), a plurality of guide plates (13) corresponding one to one to the curved portions (901) are rotatably mounted on the unloading frame (2), a traction body (11) is connected between an end of the guide plate (13) away from the rotational position and a middle portion of the curved portion (901), the curved portion (901) swings along with the crankshaft (9) through the traction body (11), so that an end of the guide plate (13) away from the rotational position has a first state higher than the unloading frame (2) and a second state not higher than the unloading frame (2).

8. The loading and unloading mechanism of the sucker rod straightening machine according to claim 7 is characterized in that: It also includes a second bracket (14) for supporting the crankshaft (9) to rotate, and the second bracket (14) is located at the rear side of the straightening machine; the swing center of the crankshaft (9) and the swing center of the feed plate (3) are located on the same straight line, and a coupling (10) is connected between the crankshaft (9) and the feed plate (3).

9. The loading and unloading mechanism of the sucker rod straightening machine according to claim 7, characterized in that: A plurality of rollers (12) for supporting pumping rods are rotatably mounted on the unloading rack (2), and a buffer plate (16) corresponding to the straightening machine is provided on the upper side of one end of the unloading rack (2) away from the straightening machine.

10. The loading and unloading mechanism of the sucker rod straightening machine according to claim 8, characterized in that: When the material taking plate (3) swings to the highest position, the end of the guide plate (13) away from the rotation position is in the second state.

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