200944465 .九、發明說明： 【發明所屬之技術領域】 本發明涉及一種高度微調裝置及裝備該裝置的吊車。 【先前技術】 吊車通常包括一起重電機、一連接於該起重電機的捲 筒及一捲收於該捲筒的荷重鏈條。使用吊車提升重物時， 將該荷重鏈條的末端連接該重物，透過一控制開關使該起 重電機轉動而捲收該荷重鏈條，便可將該重物提起。然而， ❹由於現有吊車的精度所限，難以精確地控制吊車的起重電 機做小角度轉動而捲收或放下其荷重鏈條，因此，無法將 重物精確地提升到預設高度。 【發明内容】 鑒於以上内容，有必要提供一種高度微調裝置及裝備 該裝置的吊車，用以將重物提升並精確定位於預設高度。 一種高度微調裝置，用於一起吊設備以精確地調節吊 ❹起重物的高度，該高度微調裝置包括一微調電機、一連接 於该微調電機的第二捲筒、一繞收在第二捲筒上的纜繩、 -連接於㈣繩末端的彈簧、—連接於該彈簧下端的吊 鉤位移感測器、-電性連接於該位移感測器並用於控 制該微調電機的控制器，該位移感測器用於感測該彈等長 ^的變化並將該彈簧長度的變化轉化為電信號輸入到該控 ^ ’該㈣15輯該電⑽_職調電機啟動而捲收 或放下該纜繩。 一荷重鏈條，該吊車本 一種吊車，包括一吊車本體、 8 200944465 •體設有相互連接的一起重電機及一第一捲筒，該荷重鏈條 .繞收於該第一捲筒，該荷重鏈條的末端連接一高度微調裝 置’該鬲度微調裝置包括一微調電機、一連接於該微調電 機的第二捲筒、一繞收在第二捲筒上的纜繩、一連接於該 纜繩末端的彈簧、一連接於該彈簧下端的吊鉤、一位移感 別器、一電性連接於該位移感測器並用於控制該微調電機 的控制器，該位移感測器用於感測該彈簣長度的變化並將 ❹該彈簧長度的變化轉化為電信號輸入到該控制器，該控制 器根據該電信號控制該微調電機啟動而捲收或放下該纜 繩。 相較習知技術，透過裝設該高度微調裝置，該吊車可 將重物吊起並精確地調節至預設高度，該吊車的荷重鏈條 的末端連接一高度微調裝置，該高度微調裝置的彈簧發生 彈性變形，向預設高度對重物施加外力，該彈簧伸長量發 生微小的變化，該位移感測器檢測到彈簧的伸長量的變化 ❹並透過該控制器轉化為控制信號輸入該微調電機，該微調 電機轉動而收起或放下該纜繩使重物向預設位置運動從而 達成對重物高度的精確調節。 【實施方式】 5月參考圖1，本發明吊車的較佳實施方式包括一滑動 設置於一橫樑200的吊車本體1〇、一開關2〇、一荷重鏈條 30及一高度微調裝置4〇。 該吊車本體10包括一起重電機12及一與該起重電機 12相連且可繞收該荷重鏈條3〇的第一捲筒14。 200944465 . 請共同參閱圖2,該高度微調裝置40包括一微調電機 * 41、一連接於該微調電機41的第二捲筒42、一收容該微 調電機4ί及該第二捲筒42的殼體43、一繞收於該第二捲 筒42並可向下穿過該殼體43的纜繩44、一連接於該纜繩 44末端的彈簧45、一連接於該彈簧45下端的吊鉤牝、一 連接於該彈簧45的位移感測器47及一與該位移感測器47 電性連接並可控制該微調電機41的控制器48。該殼體“ 的頂部設有一安裝部432。該位移感測器47設有兩探頭 © 472、474,分別裝設於該彈簧45的上端和下端。 請共同參閱圖3至圖5,使用時，將該荷重鏈條3〇的 末端連接於該高度微調裝置40的殼體43的安裝部432。 使該吊車本體1〇沿該橫樑200滑動至一重物3〇〇的上方， 啟動該開關20’該起重電機12轉動並帶動該第一捲筒14 而放下該荷重鏈條30,將該吊鉤46鉤住該重物3〇〇。操作 該開關20使該起重電機12反轉並帶動該第一捲筒12捲起 ❹該荷重鏈條30而將重物300吊起，該高度微調裝置4〇的 彈簧45被拉伸，當該重物3〇〇接近預設高度時，使該起重 電機12停止；使該高度微調裝置3〇通電，該位移感測器 47透過兩探頭472、474感測並記錄該彈簧45的長度L1， 並將此長度疋為零位’若此時該重物300位於預設高 度下方，對該重物300施加一向上的力f，該彈簧45的長 度將發生微小的變化而變為L2,該感測器47透過其探頭 472、474檢測到該彈簧45的長度的變化s(s=Ll L2)並轉 換成電信號輸入該控制器48，該控制器48根據該電信號 200944465 ι控制該微調電機41並以一定的速度轉動而捲起該纜繩 _ 44，使該重物3〇〇向上運動距離s，如此反復，當該重物 3〇〇運動到預設高度，關閉該高度微調裝置4〇，即可使重 2細精確定位於預設高度。反之，若該重物300位於預 又尚度上方，對該重物3〇〇施加一向下的外力f，透過上 述過程，該微調電機41反轉，便可使重物3〇〇精確定位於 預設高度。 、 ❹ 為了方便操作，該彈簧45需有適當的彈性係數。該位 移感心47有適當的解析度以感知該彈簧45的長度變 化。在本實施方式中’該位移感測器47係一線性電位計， 其解析度達25Um。所以雖然該彈簧45具有較大的彈性係 數’調節高度時也只需要較小的外力就可使該彈簧4生 足以被該位移感測器47感測並產生信號的伸長變化量s。 ❹ 利申;上Γ，本發明符合發料财件，纽法提出專 二上所述者僅為本發明之較佳實施方式，舉 凡本案技藝之人士，九全Jt士丄_ 飾或變化，比廐m 精神所作之等效修 飾飞變化白應涵盍於以下之申請專利範圍内。 【圖式簡單說明】 圖1係本發明吊車的較佳實施方式裝設 樑的組合圖。 、橫 :2係本發明高度微調裝置的 的不意圓。 7八的 200944465 圖4係圖3中被吊起的重物施加力F的示意圖。 圖5係圖3中的重物被高度微調裝置調節至預設 南度的不意圖。 【主要元件符號說明】 吊車本體 10 起重電機 12 第一捲筒 14 開關 20 橫樑 200 荷重鏈條 30 重物 300 高度微調裝置 40 微調電機 41 第二捲筒 42 殼體 43 安裝部 432 纜繩 44 彈簧 45 吊鉤 46 彈位移感測器 47 探頭 472、474 控制器 48200944465. IX. INSTRUCTIONS: TECHNICAL FIELD The present invention relates to a highly fine-tuning device and a crane equipped therewith. [Prior Art] A crane typically includes a heavy motor, a reel attached to the hoist motor, and a load chain that is received in the reel. When the weight is lifted by the crane, the end of the load chain is connected to the weight, and the weight is lifted by a control switch to wind up the load chain, and the weight can be lifted. However, due to the accuracy of existing cranes, it is difficult to accurately control the crane's hoisting motor to rotate or lower its load chain at a small angle, so that the weight cannot be accurately raised to a preset height. SUMMARY OF THE INVENTION In view of the above, it is necessary to provide a height fine adjustment device and a crane equipped with the same for lifting and accurately positioning a weight at a preset height. A highly fine-tuning device for hoisting equipment to precisely adjust the height of a hoisting weight, the height fine-tuning device comprising a fine-tuning motor, a second reel connected to the fine-tuning motor, and a winding in the second volume a cable on the barrel, a spring connected to the end of the (four) rope, a hook displacement sensor connected to the lower end of the spring, a controller electrically connected to the displacement sensor and used to control the fine adjustment motor, the displacement The sensor is configured to sense the change of the length of the bullet and convert the change in the length of the spring into an electrical signal input to the control. The electric (10) _ motor is activated to retract or lower the cable. A heavy-duty chain, the crane, comprising a crane body, 8 200944465, a body with a heavy motor and a first reel connected to each other, the load chain being wound around the first reel, the load chain The end is connected to a height fine adjustment device. The fineness adjustment device includes a fine adjustment motor, a second reel connected to the fine adjustment motor, a cable wound around the second reel, and a spring connected to the end of the cable. a hook connected to the lower end of the spring, a displacement sensor, a controller electrically connected to the displacement sensor and used to control the fine adjustment motor, the displacement sensor for sensing the length of the magazine The change converts the change in the length of the spring into an electrical signal that is input to the controller, and the controller controls the fine-tuning motor to start to retract or lower the cable according to the electrical signal. Compared with the prior art, by installing the height fine adjustment device, the crane can lift and accurately adjust the weight to a preset height, and the end of the load chain of the crane is connected with a height fine adjustment device, and the spring of the height adjustment device Elastic deformation occurs, an external force is applied to the weight at a preset height, and the spring elongation is slightly changed. The displacement sensor detects a change in the elongation of the spring and is converted into a control signal through the controller to input the fine adjustment motor. The fine-tuning motor rotates to retract or lower the cable to move the weight to the preset position to achieve precise adjustment of the height of the weight. [Embodiment] Referring to Fig. 1, a preferred embodiment of the crane of the present invention comprises a crane body 1〇 slidably disposed on a beam 200, a switch 2〇, a load chain 30 and a height fine adjustment device 4〇. The crane body 10 includes a heavy motor 12 and a first spool 14 coupled to the crane motor 12 and circumscribing the load chain 3〇. Referring to FIG. 2 together, the height fine adjustment device 40 includes a fine adjustment motor * 41, a second reel 42 connected to the fine adjustment motor 41, a housing for housing the fine adjustment motor 4 and the second reel 42. 43. A cable 44 wound around the second reel 42 and passing downwardly through the casing 43, a spring 45 connected to the end of the cable 44, and a hook attached to the lower end of the spring 45. A displacement sensor 47 connected to the spring 45 and a controller 48 electrically connected to the displacement sensor 47 and controlling the fine adjustment motor 41 are provided. The top of the housing is provided with a mounting portion 432. The displacement sensor 47 is provided with two probes 472, 474 respectively mounted on the upper end and the lower end of the spring 45. Please refer to FIG. 3 to FIG. 5 together. The end of the load chain 3〇 is connected to the mounting portion 432 of the housing 43 of the height fine adjustment device 40. The crane body 1〇 is slid along the beam 200 to a weight 3〇〇, and the switch 20' is activated. The lifting motor 12 rotates and drives the first reel 14 to lower the load chain 30, and hooks the hook 46 to the weight 3. The switch 20 is operated to invert and drive the lifting motor 12 The first reel 12 is rolled up by the load chain 30 to lift the weight 300, and the spring 45 of the height fine adjustment device 4 is stretched, and when the weight 3 is close to a preset height, the lifting is performed. The motor 12 is stopped; the height fine adjustment device 3 is energized, and the displacement sensor 47 senses and records the length L1 of the spring 45 through the two probes 472, 474, and turns the length to zero position. The object 300 is located below the preset height, and an upward force f is applied to the weight 300, and the length of the spring 45 will be A slight change becomes L2, and the sensor 47 detects a change s (s = L1 L2) of the length of the spring 45 through its probes 472, 474 and converts it into an electrical signal for input to the controller 48, the controller 48 Controlling the fine adjustment motor 41 according to the electrical signal 200944465 ι and rotating at a certain speed to wind up the cable _ 44, causing the weight 3 〇〇 to move upward by a distance s, thus repeating, when the weight 3 〇〇 moves to the pre- Set the height, close the height fine adjustment device 4〇, so that the weight 2 is finely positioned at the preset height. Conversely, if the weight 300 is located above the pre-requisite, a downward external force is applied to the weight 3〇〇 f, through the above process, the fine adjustment motor 41 is reversed, so that the weight 3〇〇 can be accurately positioned at the preset height. ❹ For the convenience of operation, the spring 45 needs to have an appropriate elastic coefficient. The displacement sensation 47 is appropriate The resolution is to sense the length of the spring 45. In the present embodiment, the displacement sensor 47 is a linear potentiometer having a resolution of 25 Um. Therefore, although the spring 45 has a large elastic modulus 'adjustment height Only a small external force is required The spring 4 can be made to have an amount of elongation change s that is sensed by the displacement sensor 47 and produces a signal. ❹ 利申;上Γ, the invention conforms to the payment of the financial item, and the New Zealand For the preferred embodiment of the present invention, the person skilled in the art of the present invention, Jiuquan Jt Shiyi _ decoration or change, the equivalent modification of the spirit of 廐m spirit should be included in the following patent application scope. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a combination view of a preferred embodiment of a crane of the present invention. Horizontal: 2 is a distraction of the height fine adjustment device of the present invention. 7 ar. 200944465 Fig. 4 is a hoisted weight in Fig. 3. A schematic diagram of the applied force F. Fig. 5 is a schematic view showing that the weight in Fig. 3 is adjusted to a preset south by the height fine adjustment means. [Main component symbol description] Crane body 10 Lifting motor 12 First reel 14 Switch 20 Beam 200 Load chain 30 Weight 300 Height fine adjustment device 40 Fine adjustment motor 41 Second reel 42 Housing 43 Mounting portion 432 Cable 44 Spring 45 Hook 46 spring displacement sensor 47 probe 472, 474 controller 48
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